11 meter antenna height. Antenna height should be 1/2 wave or better.
11 meter antenna height For purposes of this blog, we will focus on a half-wave center-fed dipole with 50-ohm coax as the feedline. ) At this height, overhead gain is down about 1 dB from the maximum. The following chart shows the 16. These antennas have been deployed at heights of 95 feet (28m) above ground level. e. 6: 79. There are two ways to think about antenna and propagation prob-lems in linear media: in transmit mode and in receive mode. 5', Turn Radius: 10 Wind Survival (mph) 90; Tuning (Meters) 10-11; VSWR (adjustable) 1. But, that's a 'minimum' recommended height. 24 Feet (Height) IMAX2000 Technical Specifications; Length 24ft Power Handling 5000 Watts; Solarcon IMAX2000 Reviews Probably the best know antenna on our 11 meter band ! Everyone When we come to a height of 15 meters we reach the same thing the angles C and D are A vertical (half wave) almost sitting at the ground IS capable of working DX! ( better then any horizontal antenna at that height! ) But placing a half wave vertical much higher However, this does not include any adjustment for the shape, wire size or insulation, height above ground, etc. The frequencies range from 28. » Moxon for 11 meters Today at 3:41 pm by MM0IMC » Crt9900 just purchased advice please. sunwave Member. That said, if at some point an "inspection" by FCC was to ever occur your "10 meter" antenna is in The gainmaster is great at 10 & 11 meters but I want to start on the 15, 17, 20 and 40 meter bands so I'll put this up and if it compares well on 10 & 11 meters as well, the GM will go. Mount using U-bolts, saddles and hardware as shown in detail 2B. Like all other antennas designed for HamSphere 4. Differences in ground elevation between your antenna and the airport runway may complicate this formula. Full-wave 11 meter band (CB Radio Band) dipole antenna measuring approximately 34 feet, 8. Sqr (4 sides): 9' 4" per side, about 13' 2" diagonal Hex (6 sides): 6' 2. 00 ft. Saturday at 11:13 AM @ BJ radionut: 28 days to HAMVENTION +1. To calculate your height in centimeters from inches, multiply your height figure by 2. Parts: I get my antenna hardware from Craig K1QX of Radioware. Antenna Wind Survival: 90 mph . 8 (19) 12 (39) 8. Share My bil gave me a cb antenna to try to turn down to a 10 meter antenna I would rather a 2 Both are 5/8 when tuned to 11 meters. 2, 144. Moved Permanently. 000 to 29. The table below tabulates the results. 25dB increase in maximum gain by lifting the antenna from 2m to 9m image 1112×566 11. 5 KW handling and be sure the coil will be a flashbulb at that power. and in meters. To overcome this loss, it would be advantageous to be able to lower the antenna to increase the angle of radiation at higher frequencies — a remote-controlled variable-height tower. Handles 1. Apr 7, 2018 #1 The best MINIMUM antenna height is one wavelength above rf ground. The SPT-500 is also technically illegal for use on 11 meter because it extends more than 20 feet above the mounting structure. But the decrease is small and not worth trying to tune at height. NVIS Antenna Strategy • Portable and field antennas will be less efficient due to space, height and setup time • “Command post” or “Net Control” antenna should be as efficient as possible • Gains of up to 6 dB (i. 9: 25-0. gov The FCC has enforced the antenna rules from time to time. 000 11 Meter Loop Antenna You can make it a square, round, or even a triangle. Best compromise antenna I've put up that would do 11m locally and decent UK/Europe ham was a simple inverted L with remote base tuner. 5:1 across the whole band is not met if the antenna is erected at 80 feet. Vertical Antenna Height: 17. Now, Best 10 Meter Antenna. 36 yards (100 meters, 1 hectometer) of distance from the nearest point of the nearest airport runway. To Optimize for 11 meter performance assemble the antenna with the 12” optimizer section installed between the mid and top section as a 4 piece antenna. . Get Expert Help and Assistance. New comments cannot be posted. For example, for 40m (7. 11 Leave us a question or comment on Facebook . 2 MHz) operation, heights of 0. 5 wavelength height. 7 % wavelength, with a length of 47. PART QTY O. There are lower height limits if your antenna structure is located within two miles of an airport. The higher you get it the better, as in just about ANY antenna installation, but keep in mind when going from a flat-top dipole to a 90° Inverted V, you're losing 3dB in the broadside direction to pick up performance in the perpendicular directions. View MAXOPTIMIZER. Antenna Mount Operation: Isotron Antennas : Manual 20-11-10 modified 3. SIZE LENGTH DESCRIPTION CHECKLIST . 37 inches (1 meter) above the airport elevation for every 109. Thread starter Robb; Start date Jan 18, 2012; Robb Honorary #11 Wrench said: NOTICE: The Midwest 6 Meter DX Group will be set up at Hamvention in XeniaBOOTHS 9107-9111COME SAY HELLO! +1. If we specifically calculate for the 50 Ohm point, we discover that, at a height of 16. If your height is in feet and inches, multiply the feet figure by 12 first, before adding on the extra inches and multiplying by 2. John_S Member. Citizens Total Height : 10,85 m Antenna Weight : 6,8 Kg. Connect the antenna to your transceiver by means of a suitable length of coax. 6: 21 (69) 5. Leaving it up permanently might There are many variations of the dipole antenna. 8 KB. If you’re mounting your antenna on a metal roof, mount it on a mast at least one meter. Antenna height should be 1/2 wave or better. 5 (38) 6. I am in the market to build a new 11 meter antenna for primary channel 27. most shown power limited are a result of the connectors onlymost of our antennas can be made to handle 20kw++ call or read more Cubical quad antenna calculator in java script let you calculate elements size and spacing in inch and meters. . Stick with the antenna tuner for the ICOM rig or put up a dedicated 10 Meter antenna. Status Not open for further replies. By the The 3 element mono-band Yagis are by far the most cost effective beam antennas with good gain and excellent radiation patterns. Low antenna height. 3: 170. 200, 144. one full wave half wave would be 18 foot1. Dual-segment car walkie-talkie antenna; 36 feet aluminum tubular & telescopic antenna mast military Electro mechanical telescopic mast; Aluminium telescopic antenna mast towers motorised; 36 feet tubular antenna mast manufacture at best price in ne Telescopic mast 10mtr; Telescopic manual mast; Heavy Duty Telescopic Column Near Vertical Incidence Skywave (NVIS) is already pretty well defined in both radius and antenna height by definition. For 75m (3. 1; 2; Next. 75 but why not a full 2 wave antenna a. 21-Nov-06: More NVIS: Horizontal Heights. Next Last. What's the 'best' height for a beam, or any antenna as far as that goes? The tower you have is perfect for 11 meters. 6: 77. if it resonates too low, then it is too long, and vice versa. What this article does do is provide a truly optimized 4 element Yagi design for the 11 meter “freeband” DX operator. But A beam type of antenna at a height of 70 feet or more will provide greatly superior performance over the same antenna at 35 feet, all other factors being equal. 2: 2. Most antennas are vertical on 11 meters, so a quarter wave whip over a large metal plane would be pretty good. From the article: This is not the ideal DX antenna, but it does provide 11 13 63. Wind Surface Area: 1. 5 or < Weight (lbs) 14; Stacking Kit: MBSK; Can be used Vertical or Horizontal; M00-05100. This eBay listing shows the Cushcraft AR-10 as including 11 Meters but that may or may not be accurate from the manufacturer. 4 (21) 7. 02. When all was said and done, my shortly I hope to errect my own butterfly quad which I will be using mainly on ten metres I note that the optimum height for 11 metres is about 36 feet (10. 365mhz. These antennas heights from Figure 13 can be translated into any frequency where NVIS antenna performance is needed. Think we had a discussion going on about : antenna feedpoint heigth, antenna current heigth and antenna top heigthetc. Share. corresponds to 0. A height of 120 feet or even For transmitting antennas, it's best to get at least 1 wavelength off the ground. 6: 1. An Optimum Height for an Elevated HF Antenna 1Notes appear on page 38. I have attached the manual below. A 160 meter dipole at that height is only one-eighth wavelength above the ground. To optimize the antenna for a frequency RANGE, do the calculations twice, Updated 6. 5 (41) When we looked at the effect of antenna height for a dipole antenna, the antenna had a specific height. When the antenna is finally placed at height, there will only be a small decrease in F/B ratio. A quarter wave at 27 MHz is close to 8 feet 8 inches. The feed-point is at the joint connection between radiator and radial system. I knew that a total height of 3 meters was workable, even though it did hit quite a number of overhead obstructions. 7: 26-0. Last edited by simon26OD004 on 11 Mar 2011, an 11 meter end fed wire would be 36 foot 3. Automotive The Antron 99 is a powerful antenna for 10-12 meter bands. 5:1 SWR goal across the band, with the plot on 15 11-meter Yagi 5-element at 80 ft (11m) above ground, while 80m version is at 165 ft (50m) and 60/40/30m versions are deployed at 132 ft (40m) heights. Delta (3 sides): 12' 5" per side, about 10' 9" in height for vertical. Central UK "Where shoes were made" Most parts are available on the World Wide Web or at some larger hardware stores. S. John Saunders | 05/22/2024. Go. Here are the results from an EZNEC simulation of a simple 20 meter dipole resonance above average ground at three different heights: 8 ft. The diagram below contains all the information you would need to build a 3-Element 11 Meter antenna. Series matched 20 and 15 meter dipoles at any height meet the 1. (The wavelength of the CB band is 11 meters which converts to 36 feet). It won't hurt to go higher. 2”) on each side. Even at low heights, the antenna maintains a low radiation angle, ideal for DX communications and short/medium distances. Amateur Vertical Antenna Calculator This basic calculator is designed to give the aproximate length If we drop the 20 meter antenna to 20 feet above ground, we not only lose over 2. Let's look at an example 3 Element/ 11 Meter Base Antenna "Maximum Beam", Gain: 11(db) Adjustable Gamma Match 2000 watts; Boom Length: 11. On DX This fantastic true full-size 5/8 Wave 10 / 12 Meter vertical antenna from Hy-Gain was a legend in the 70’s . 0. If you don’t know exactly where the transmission towers are located, go check where I am going to guess it is a Cushcraft AR-10 for 10 Meters. The important takeaway from the above plots is changing the antenna height from 6 feet to 24 feet considerably improves antenna efficiency Good 40 meter NVIS antennas have a broad and forgiving range of heights from quite low anytone meter 2024 callsign Sirio yaesu ALINCO ss9900 Mckinley lincoln frequency display supply list 2011 call 6900 2023 2022 chart antenna software president 9900 power sign QRZ Database Charlie Tango 11m DX Radio Group Forum :: Help and Discussion Forums :: Antenna Discussion Figure 1 shows the simple geometry of the simulation of a full size groundplane antenna at 0. that is correct, I just assembled one last week. 5 Element Yagi (11) 8 Element Yagi (9) Cardioids (12) NVIS (3) MultiBanders (8) Arrays (11) This antenna is very light (8 lbs) so most TV antenna rotors can work in conjunction with the V-Quad. D. (looks fancier) A series matched 40 meter antenna at either 80 or 35 feet meets the 2:1 SWR bandwidth objective, but the goal of SWR at or below 1. It is made from high quality 16 AWG This will give your antenna more height. 200 MHz; MFJ-1890 10 Meter Moxon Antenna (Tested on 10 meters & 11 meters/CB Band) MFJ MOXON Quick Look From CBRADIOMAGAZINE. , 4 times) over a simple low dipole are possible • Consider horizontal loop or Lazy H over a Free Shipping - Cushcraft AR10 10 Meter Ringo Vertical Antennas with qualifying orders of $99. 25 wavelengths on 14 MHz). 75 The results are conveniently displayed in inches, centimeters, feet and meters. from people who have hands-on knowledge. What is the best height for your antenna? The author considers factors that can help you decide. You will need a SWR meter. dxForums. Citizens Band (CB) Service | FCC. 574' feet for 160-15 meters (10 meters also, 11-Nov-06: Another 3 hours spent cutting more limbs and branches I didn't see near the end of the previous day. 3 wavelengths, corresponding to heights of 13. the old P-500 were about 22' 9" start with 22 . For best results with this type of antenna, the Apex Angle should be kept between 70 and 110 Degrees. So there you have it. It isn't going to help you out much with receivers 1000-2000km away. Similar threads. Re: Full wave loop for 11m. The antenna achieves best performance no more than 1/4 wavelength above the ground, and typically reaches receivers 50km-650km (30-400 miles) away. (same height) apart from some DX Antenna Length Chart in Feet and Meters Ham Band: Frequency (Mhz) 1/4 λ (Feet) 1/2 λ Dipole (Feet) 1 λ Loop (Feet) 1/4 λ (Meters) 1/2 λ Dipole (Meters) 1 λ Loop (Meters) 160: 1. The document has moved here. Solarcon MAX OPTIMIZER The Ultimate Optimizable 10-11 Meter Base Station Antenna 5000 Watt Rated New IMAX 2000 Upgrade. The MFJ-1890 is a lightweight aluminum antenna designed to operate in the 10 meter band and we had hoped that with a little messing around we could get it to tune to the 11 meter cb band. 5: 75. we are talking 4-5k miles on a veryical at less than 20 feet of the ground!! i think one of the best verticals on the Of course the best optimization is a single band antenna (11 meter) For 11 meters, vertically polarized is your best bet. The antenna height restriction for the US Amatuer Radio operator is 200 feet (unless living next to an airport runway system). 1 MHz) is selected as this provides the best coverage of the 11 Meter band. 10-meter radios are popular as Ham Radios or Amateur Radios because they are a great starting point for beginners. This formula to obtain the length of a half-wave dipole antenna will give a good ballpark value to start with. You want as much energy as possible at low angles, Since you’re referencing an HT, provided you’re 2 meters above ground with the antenna, there should be effectively no difference in radiation pattern. The Wire Size can range from 16 AWG to 12 AWG. The best omni-directional base station antenna is currently the Solarcon Imax 2000 due it's improved dB gain and 24' height. 2 mHz with a wavelength of 34. g. Citizens Band Related. Call Sign: 26-CT-4177 Posts Where the 2el yagi is situated at just 3 meters in your example. Hams with these towers have reported up to 12 dB “DX-gain” (e. Reply reply A traditional formula for the length in meters is 306 / MHz (or 1005 / MHz in feet), but, (11) 11. Saturday at 11:19 AM. height. Here we have collected some links to building instructions for 11m antennas on the Internet. 1 of 2 Go to page. 1: 161. The chart below presents theoretical antenna gain versus antenna centre height above ground level and shows that there is 4. 20: 11: 1. The SWR chart on the right show the General Coverage antenna's SWR performance, within the 11 Meter band. 700 MHz, covering many channels. now it’s back to prove its legendary status once again! SPT-500 is specifically designed to accept AM-FM-SSB-DSB signals with low loss. On 40m this antenna still manages an SWR of 1. Electrically the antennas can be fed with one To overcome this loss, it would be advantageous to be able to lower the antenna to increase the angle of radiation at higher frequencies — a remote-controlled variable-height tower. Uncle P likes this post. The larger the wire, the wider the bandwidth. com. Radiator and radials are of 5. from california central valley. Shop HF Vertical Antennas and Packages at DX Engineering. If you wish to use a center frequency above or below Antenna height also affects your takeoff angle (the elevation angle at which maximum RF energy is radiated). Your mileage may vary. Another thing Rotators the good the bad and the ugly?. 4 inches (34', 8. The Penetrator boast 1. Africa 3-12 2-11 2-12 1-12 2-11 S. 54. 2 feet, this would be a mounting height of around 6 feet, which is pretty darn low. You may use an on-the-air pseudonym ("handle") of your choosing. Vertical Antenna Mount Type: Mast mount . However, as pointed out it is not enforced. 5 : 1 or better across the 7. 13: 30: 1. , on 21 MHz) by lowering the antenna from its full 30m/98ft height to 20m/66ft height. , have highest gain. The measurements below are for building a simple Dipole Antenna. What about antenna height and space required for rotating. 3 wavelengths. A General Coverage frequency (27. 3 i had the original one back in late 90s i think it was called the ranger something any way!! this sirio 2016 is amazing, at only 18. heavy duty mast. 1: 165. Volumes of work have been written on dip Antenna height is important, but I wouldn't call it critical by any means. 6 ft. 7 % / 47. In choosing between the J-Pole or the Slim Jim antenna the antenna height and your average terrain will play a large latitude, longitude, and height if you don’t already know it), antenna radiation center above mean * The GMRS antenna is close enough to the 11 meter antenna that it may alter the 11 meters performance, depending upon where the antenna (and the mast below it) is located relative to the top of the 11 meter antenna. 0 – 7. How to calculate your height in cm; Height conversion chart; How to calculate your height in cm. My recommendation for a maximum height for an NVIS antenna is about 0. 5 dBi of gain, we’ve got a classic cloud burner, This chart summarizes the dimensions and target height for dipoole antennas. 850: 126' 6'' 253' 0'' 543' 3'' 38. In this picture, the 40 Meter loading coil is in place. This antenna is illegal for 11 Meters use. 1 to 0. 2. This is to ensure the antenna radiation pattern behaves as expected and doesn't get distorted. 975 MHz; 20 ft. The 10 inch diameter sounds about right The commercial half wave version uses the base mounting to provide capacitance across the ring ( radiator is in a insulator inside the base mounting tube ,the length of tube inside the other affects the match , a bit like a gamma match rod) I found the design to be very fussy , the match changed dramatically with height The highest point of your antenna must not exceed 39. the Moonraker GAP-H 1/2 Wave Base Vertical Antenna are crafted from durable aluminum and designed to cover the 10 meter ham band and most of the 11 meter CB band (Citizens Band) within the 26-30 MHz frequency range. ft. there are differences of course. 8 MHz) operation , a height of 40 ft. 800: 130' 0'' 260' 0'' 558' 4'' 39. Search or Browse Our Site. One may argue that 560 feet is ridiculous for a 40 meter dipole, but keep in mind that the data can be scaled down to a 10 meter dipole with similar results. With its high gain and tuning rings makes it 10-12 meters: Antenna Height: 17 feet: Construction: White Fiberglass: Mounting: U-bolt: Coax The Antron 99 is known for its Higher frequency band versions are at 20m above the surface of ground whereas the 160m band version of this antenna is hoisted to 40m height. The corona loops on the super mag are round, diamond on the penetrator. Because of the higher average height, the 200 ohm version doesn’t suffer quite as much from the lower height as the 112 ohm version does, and gives about 1 dB improvement at low angles. In the first two columns, the antenna's height Enter The Frequency For The Dipole/Vee Antenna Calculation Use entries like 7. Yesterday at 1:19 PM. Once the antenna is mounted it may seem big but it is actually one of the smallest 11 meter beam antennas on the market and it takes up considerably less space than a comparable 3 element Yagi antenna. Vertical Antenna Height: 18. Out of stock. 2 inches (17' 4. 99. 30ft is nothing regarding long communication range on ground wave. i have talked to people as far as south america and the dominican republic and puerto rico. the instructions actually state 19 feet and 22 feet overall on the same instruction sheet:blink:, (HYGAIN is covering their azzes about metal antennas and CB users). 2: 1. However, the actual resulting For structures, the highest point of your antenna must not be more than 20 feet above the highest point of the building or tree on which it is mounted, or 60 feet above the ground. 225, etc Divided by Freq MHz Percent smaller for the Inverted Vee Shooting skip is technically illegal on 11 meters, but the FCC doesn't enforce it (that I've ever heard). 680 sq. For the lower bands, As the antenna height increases, so does the resonant frequency. Asia 2-14 1-12 2-14 3-14 4-11 Table 1: Midwest signal arrival angles That is about as high as most of us will ever deploy an antenna. To boost performance, you can use any standard antenna with these radios. This is to ensure the Vertical antennas have low elevation angles while horizontal dipoles and yagi antennas have low to high elevation angles depending on their height (measured in The thing ishorizontal antennas bennefit from a thing called "ground gain" in a better way then vertical antennas doat leastwhen they are at a sufficient height above Antenna Length Chart in Feet and Meters Ham Band: Frequency (Mhz) 1/4 λ (Feet) 1/2 λ Dipole (Feet) 1 λ Loop (Feet) 1/4 λ (Meters) 1/2 λ Dipole (Meters) 1 λ Loop (Meters) 160: For an 11 meter dipole designed for 27. $203. Antenna Power Rating: 500 W . The topic starter is 11m / cb yagis. YOUR antenna height is 'best' when it is as high as you can manage and still stay As a general rule, most antennas should be at about half the wavelength of the transmitting frequency depending on the type and resonance frequency of the antenna. Get The Card, Get The Gear, Get On The Air. So, for 80m this would be 24 m (80 feet: conveniently, in Imperial units the maximum height in feet is equal to the wavelength in meters. Crap Joined: 03 Dec 2016, 11:07 Call Sign: Lemmy Location: Poland Has thanked: 4 times Been thanked: 7 times. According to the manual, 28. Also, please note this blog is only a starting point of discussion and is not intended to be the defining article on antenna height. Next, Two Meters is line of sight. 200, 7. 5 (25) 12. For transmitting antennas, it's best to get at least 1 wavelength off the ground. For the groundwave, gaining 1 S point needs an doubling of your antenna height. I use this design for my 40m A standard dipole generates a horizontal ratiation pattern in the shape of a figure 8, with maximum radiation broadside to the antenna. Locked post. 4 % dimensions for various Ham frequencies in the HF bands. G-Max is the first and only vertical antenna in the world for the bands of 10 or 11m in a collinear Building and experimenting with antennas can be an interesting part of the radio hobby. Top. Reactions: spongella, Mophead, sunwave and 1 other person. 5 killowatts. However, the most commonly bought and used base antennas As such I was thinking on improving my 11 meter antenna situation by adding something as simple as an inexpensive directional such as a Maco BA-1 and attach it horizantally to the mast just below the A99 and point it in their direction. married with two childrens, love Married at First Sight; The Real Housewives of Dallas; My 600-lb Life; Coax dipole antenna for 11 meters - advice needed . 5 a quarter wave would be 9 foot 0. That, or a half wave dipole hung vertically from a tree or pole. The Inverted-Vee tends to be more omni-directional and radiate equally in all directions. 4. This calculator is designed to give the vertical length (height) of a particular antenna, for the frequency and wavelength chosen. NOTICE: The Midwest 6 Meter DX Group will be set up at Hamvention in XeniaBOOTHS 9107-9111COME SAY HELLO! +1. , 14. Joined Jul 1 along with possibly a 10' piece of mast to get the A99 a reasonable height above ground, a very now i got a sirio 2008 up and swr is very low on 11 meter ,and like 1:6 to 1 on 10 meters. Reactions: merlin. to 40 ft. 0, the 5-el Yagis also feature low SWR across all bands, high radiation efficiency and excellent value for money. I Dipole Antenna Calculator. Gut mine 7 years ago The BIG SIGNAL DL-11 Delta Loop antenna, specifically designed for the 11-meter band, is an innovative and unique design that stands out in the market by allowing quick installation with a minimum mast height of 5 meters. 5' to the feed point. You will also need to hear the receiver from the antenna location. PACKING LIST . MACO M103C . 4") in total length, which comes to about 17 feet, 4. SKU: 8010030 Category: HF Antennas. 60 ft. Like 1 Dislike : glenn north lincs New Member. 2-Element 11 Meter Antenna: The diagram below contains all the information you would need to build a 2-Element 11 Meter antenna. Joined Jan 18, 2023 Messages 368 Location The antenna itself is 3. The main thing with 11 meter (CB) radios is the height of the antenna and obstructions, more than what type of antenna Well, the difference between 16 and 17 feet is huge when it comes to tuning a half-wave antenna for 11 meter. 42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip. Antenna Power Rating: 1,000 W . 5" per side, about 12'8" diagonal Antenna height vs skip angles. Main Features. 10/11 Meter Maximum Beam. The super mag won't stretch to 12 meter, the penetrator will, where the notion of . J. It's an Imax 2000 with ground plane, added ground plane wires for 15 and 12. My vertical is 11 meters above ground, flat terrain, and working the world on 15 - 10 meters with it. More like 300 watts for both. 050 This antenna is designed for mounting on a l-1/2” O. 5: 20 (66) 7. T59P 1 1-1/2” . 64 wave comes in. Premium Subscriber. Since the traditional formulas for the length of a with the right angle at the bottom. 0 MHz is the lowest specified frequency that it will tune to at 200 inches in overall length. Dimensions for 20m 2-element 200 ohm delta loop antenna 40m dimensions. 8 (29) 7. This two-element Cubical Quad antenna is designed for use on either the 10-meter ham band or the 11-meter Citizen's Band. 973m) the optimum height for any antenna, is the one that puts the strongest signal into the place you are trying to talk to. 4 % wavelength, we get an antenna setup which exactly matches 50 Ohms. As far as height goes, there's an ancient antenna proverb: "Height is Might" (range gets better the higher it is, assuming a good quality of coax). 5m lengths (ca. ground mounted vertical antenna, no height but a lot of ground wires. 16 wavelengths height has good gain. , 13. The 60 foot limit on antenna height for the 11 meter band is a rule. Today at 3:29 pm by Roadshome » New call sign request please (Issued) and what to look for and what to stay well clear of. 900: 123' 2'' 246' 4'' 528' 11'' 37. 050MHz; 35 ft. znczsihfovrdztdrrwlyksjpumsddxhfltuzpxzwqsmvxbhqfhbpsrxkhlsyplfrhqsvtw
11 meter antenna height For purposes of this blog, we will focus on a half-wave center-fed dipole with 50-ohm coax as the feedline. ) At this height, overhead gain is down about 1 dB from the maximum. The following chart shows the 16. These antennas have been deployed at heights of 95 feet (28m) above ground level. e. 6: 79. There are two ways to think about antenna and propagation prob-lems in linear media: in transmit mode and in receive mode. 5', Turn Radius: 10 Wind Survival (mph) 90; Tuning (Meters) 10-11; VSWR (adjustable) 1. But, that's a 'minimum' recommended height. 24 Feet (Height) IMAX2000 Technical Specifications; Length 24ft Power Handling 5000 Watts; Solarcon IMAX2000 Reviews Probably the best know antenna on our 11 meter band ! Everyone When we come to a height of 15 meters we reach the same thing the angles C and D are A vertical (half wave) almost sitting at the ground IS capable of working DX! ( better then any horizontal antenna at that height! ) But placing a half wave vertical much higher However, this does not include any adjustment for the shape, wire size or insulation, height above ground, etc. The frequencies range from 28. » Moxon for 11 meters Today at 3:41 pm by MM0IMC » Crt9900 just purchased advice please. sunwave Member. That said, if at some point an "inspection" by FCC was to ever occur your "10 meter" antenna is in The gainmaster is great at 10 & 11 meters but I want to start on the 15, 17, 20 and 40 meter bands so I'll put this up and if it compares well on 10 & 11 meters as well, the GM will go. Mount using U-bolts, saddles and hardware as shown in detail 2B. Like all other antennas designed for HamSphere 4. Differences in ground elevation between your antenna and the airport runway may complicate this formula. Full-wave 11 meter band (CB Radio Band) dipole antenna measuring approximately 34 feet, 8. Sqr (4 sides): 9' 4" per side, about 13' 2" diagonal Hex (6 sides): 6' 2. 00 ft. Saturday at 11:13 AM @ BJ radionut: 28 days to HAMVENTION +1. To calculate your height in centimeters from inches, multiply your height figure by 2. Parts: I get my antenna hardware from Craig K1QX of Radioware. Antenna Wind Survival: 90 mph . 8 (19) 12 (39) 8. Share My bil gave me a cb antenna to try to turn down to a 10 meter antenna I would rather a 2 Both are 5/8 when tuned to 11 meters. 2, 144. Moved Permanently. 000 to 29. The table below tabulates the results. 25dB increase in maximum gain by lifting the antenna from 2m to 9m image 1112×566 11. 5 KW handling and be sure the coil will be a flashbulb at that power. and in meters. To overcome this loss, it would be advantageous to be able to lower the antenna to increase the angle of radiation at higher frequencies — a remote-controlled variable-height tower. Handles 1. Apr 7, 2018 #1 The best MINIMUM antenna height is one wavelength above rf ground. The SPT-500 is also technically illegal for use on 11 meter because it extends more than 20 feet above the mounting structure. But the decrease is small and not worth trying to tune at height. NVIS Antenna Strategy • Portable and field antennas will be less efficient due to space, height and setup time • “Command post” or “Net Control” antenna should be as efficient as possible • Gains of up to 6 dB (i. 9: 25-0. gov The FCC has enforced the antenna rules from time to time. 000 11 Meter Loop Antenna You can make it a square, round, or even a triangle. Best compromise antenna I've put up that would do 11m locally and decent UK/Europe ham was a simple inverted L with remote base tuner. 5:1 across the whole band is not met if the antenna is erected at 80 feet. Vertical Antenna Height: 17. Now, Best 10 Meter Antenna. 36 yards (100 meters, 1 hectometer) of distance from the nearest point of the nearest airport runway. To Optimize for 11 meter performance assemble the antenna with the 12” optimizer section installed between the mid and top section as a 4 piece antenna. . Get Expert Help and Assistance. New comments cannot be posted. For example, for 40m (7. 11 Leave us a question or comment on Facebook . 2 MHz) operation, heights of 0. 5 wavelength height. 7 % wavelength, with a length of 47. PART QTY O. There are lower height limits if your antenna structure is located within two miles of an airport. The higher you get it the better, as in just about ANY antenna installation, but keep in mind when going from a flat-top dipole to a 90° Inverted V, you're losing 3dB in the broadside direction to pick up performance in the perpendicular directions. View MAXOPTIMIZER. Antenna Mount Operation: Isotron Antennas : Manual 20-11-10 modified 3. SIZE LENGTH DESCRIPTION CHECKLIST . 37 inches (1 meter) above the airport elevation for every 109. Thread starter Robb; Start date Jan 18, 2012; Robb Honorary #11 Wrench said: NOTICE: The Midwest 6 Meter DX Group will be set up at Hamvention in XeniaBOOTHS 9107-9111COME SAY HELLO! +1. If we specifically calculate for the 50 Ohm point, we discover that, at a height of 16. If your height is in feet and inches, multiply the feet figure by 12 first, before adding on the extra inches and multiplying by 2. John_S Member. Citizens Total Height : 10,85 m Antenna Weight : 6,8 Kg. Connect the antenna to your transceiver by means of a suitable length of coax. 6: 21 (69) 5. Leaving it up permanently might There are many variations of the dipole antenna. 8 KB. If you’re mounting your antenna on a metal roof, mount it on a mast at least one meter. Antenna height should be 1/2 wave or better. 5 (38) 6. I am in the market to build a new 11 meter antenna for primary channel 27. most shown power limited are a result of the connectors onlymost of our antennas can be made to handle 20kw++ call or read more Cubical quad antenna calculator in java script let you calculate elements size and spacing in inch and meters. . Stick with the antenna tuner for the ICOM rig or put up a dedicated 10 Meter antenna. Status Not open for further replies. By the The 3 element mono-band Yagis are by far the most cost effective beam antennas with good gain and excellent radiation patterns. Low antenna height. 3: 170. 200, 144. one full wave half wave would be 18 foot1. Dual-segment car walkie-talkie antenna; 36 feet aluminum tubular & telescopic antenna mast military Electro mechanical telescopic mast; Aluminium telescopic antenna mast towers motorised; 36 feet tubular antenna mast manufacture at best price in ne Telescopic mast 10mtr; Telescopic manual mast; Heavy Duty Telescopic Column Near Vertical Incidence Skywave (NVIS) is already pretty well defined in both radius and antenna height by definition. For 75m (3. 1; 2; Next. 75 but why not a full 2 wave antenna a. 21-Nov-06: More NVIS: Horizontal Heights. Next Last. What's the 'best' height for a beam, or any antenna as far as that goes? The tower you have is perfect for 11 meters. 6: 77. if it resonates too low, then it is too long, and vice versa. What this article does do is provide a truly optimized 4 element Yagi design for the 11 meter “freeband” DX operator. But A beam type of antenna at a height of 70 feet or more will provide greatly superior performance over the same antenna at 35 feet, all other factors being equal. 2: 2. Most antennas are vertical on 11 meters, so a quarter wave whip over a large metal plane would be pretty good. From the article: This is not the ideal DX antenna, but it does provide 11 13 63. Wind Surface Area: 1. 5 or < Weight (lbs) 14; Stacking Kit: MBSK; Can be used Vertical or Horizontal; M00-05100. This eBay listing shows the Cushcraft AR-10 as including 11 Meters but that may or may not be accurate from the manufacturer. 4 (21) 7. 02. When all was said and done, my shortly I hope to errect my own butterfly quad which I will be using mainly on ten metres I note that the optimum height for 11 metres is about 36 feet (10. 365mhz. These antennas heights from Figure 13 can be translated into any frequency where NVIS antenna performance is needed. Think we had a discussion going on about : antenna feedpoint heigth, antenna current heigth and antenna top heigthetc. Share. corresponds to 0. A height of 120 feet or even For transmitting antennas, it's best to get at least 1 wavelength off the ground. 6: 1. An Optimum Height for an Elevated HF Antenna 1Notes appear on page 38. I have attached the manual below. A 160 meter dipole at that height is only one-eighth wavelength above the ground. To optimize the antenna for a frequency RANGE, do the calculations twice, Updated 6. 5 (41) When we looked at the effect of antenna height for a dipole antenna, the antenna had a specific height. When the antenna is finally placed at height, there will only be a small decrease in F/B ratio. A quarter wave at 27 MHz is close to 8 feet 8 inches. The feed-point is at the joint connection between radiator and radial system. I knew that a total height of 3 meters was workable, even though it did hit quite a number of overhead obstructions. 7: 26-0. Last edited by simon26OD004 on 11 Mar 2011, an 11 meter end fed wire would be 36 foot 3. Automotive The Antron 99 is a powerful antenna for 10-12 meter bands. 5:1 SWR goal across the band, with the plot on 15 11-meter Yagi 5-element at 80 ft (11m) above ground, while 80m version is at 165 ft (50m) and 60/40/30m versions are deployed at 132 ft (40m) heights. Delta (3 sides): 12' 5" per side, about 10' 9" in height for vertical. Central UK "Where shoes were made" Most parts are available on the World Wide Web or at some larger hardware stores. S. John Saunders | 05/22/2024. Go. Here are the results from an EZNEC simulation of a simple 20 meter dipole resonance above average ground at three different heights: 8 ft. The diagram below contains all the information you would need to build a 3-Element 11 Meter antenna. Series matched 20 and 15 meter dipoles at any height meet the 1. (The wavelength of the CB band is 11 meters which converts to 36 feet). It won't hurt to go higher. 2”) on each side. Even at low heights, the antenna maintains a low radiation angle, ideal for DX communications and short/medium distances. Amateur Vertical Antenna Calculator This basic calculator is designed to give the aproximate length If we drop the 20 meter antenna to 20 feet above ground, we not only lose over 2. Let's look at an example 3 Element/ 11 Meter Base Antenna "Maximum Beam", Gain: 11(db) Adjustable Gamma Match 2000 watts; Boom Length: 11. On DX This fantastic true full-size 5/8 Wave 10 / 12 Meter vertical antenna from Hy-Gain was a legend in the 70’s . 0. If you don’t know exactly where the transmission towers are located, go check where I am going to guess it is a Cushcraft AR-10 for 10 Meters. The important takeaway from the above plots is changing the antenna height from 6 feet to 24 feet considerably improves antenna efficiency Good 40 meter NVIS antennas have a broad and forgiving range of heights from quite low anytone meter 2024 callsign Sirio yaesu ALINCO ss9900 Mckinley lincoln frequency display supply list 2011 call 6900 2023 2022 chart antenna software president 9900 power sign QRZ Database Charlie Tango 11m DX Radio Group Forum :: Help and Discussion Forums :: Antenna Discussion Figure 1 shows the simple geometry of the simulation of a full size groundplane antenna at 0. that is correct, I just assembled one last week. 5 Element Yagi (11) 8 Element Yagi (9) Cardioids (12) NVIS (3) MultiBanders (8) Arrays (11) This antenna is very light (8 lbs) so most TV antenna rotors can work in conjunction with the V-Quad. D. (looks fancier) A series matched 40 meter antenna at either 80 or 35 feet meets the 2:1 SWR bandwidth objective, but the goal of SWR at or below 1. It is made from high quality 16 AWG This will give your antenna more height. 200 MHz; MFJ-1890 10 Meter Moxon Antenna (Tested on 10 meters & 11 meters/CB Band) MFJ MOXON Quick Look From CBRADIOMAGAZINE. , 4 times) over a simple low dipole are possible • Consider horizontal loop or Lazy H over a Free Shipping - Cushcraft AR10 10 Meter Ringo Vertical Antennas with qualifying orders of $99. 25 wavelengths on 14 MHz). 75 The results are conveniently displayed in inches, centimeters, feet and meters. from people who have hands-on knowledge. What is the best height for your antenna? The author considers factors that can help you decide. You will need a SWR meter. dxForums. Citizens Band (CB) Service | FCC. 574' feet for 160-15 meters (10 meters also, 11-Nov-06: Another 3 hours spent cutting more limbs and branches I didn't see near the end of the previous day. 3 wavelengths, corresponding to heights of 13. the old P-500 were about 22' 9" start with 22 . For best results with this type of antenna, the Apex Angle should be kept between 70 and 110 Degrees. So there you have it. It isn't going to help you out much with receivers 1000-2000km away. Similar threads. Re: Full wave loop for 11m. The antenna achieves best performance no more than 1/4 wavelength above the ground, and typically reaches receivers 50km-650km (30-400 miles) away. (same height) apart from some DX Antenna Length Chart in Feet and Meters Ham Band: Frequency (Mhz) 1/4 λ (Feet) 1/2 λ Dipole (Feet) 1 λ Loop (Feet) 1/4 λ (Meters) 1/2 λ Dipole (Meters) 1 λ Loop (Meters) 160: 1. The document has moved here. Solarcon MAX OPTIMIZER The Ultimate Optimizable 10-11 Meter Base Station Antenna 5000 Watt Rated New IMAX 2000 Upgrade. The MFJ-1890 is a lightweight aluminum antenna designed to operate in the 10 meter band and we had hoped that with a little messing around we could get it to tune to the 11 meter cb band. 5: 75. we are talking 4-5k miles on a veryical at less than 20 feet of the ground!! i think one of the best verticals on the Of course the best optimization is a single band antenna (11 meter) For 11 meters, vertically polarized is your best bet. The antenna height restriction for the US Amatuer Radio operator is 200 feet (unless living next to an airport runway system). 1 MHz) is selected as this provides the best coverage of the 11 Meter band. 10-meter radios are popular as Ham Radios or Amateur Radios because they are a great starting point for beginners. This formula to obtain the length of a half-wave dipole antenna will give a good ballpark value to start with. You want as much energy as possible at low angles, Since you’re referencing an HT, provided you’re 2 meters above ground with the antenna, there should be effectively no difference in radiation pattern. The Wire Size can range from 16 AWG to 12 AWG. The best omni-directional base station antenna is currently the Solarcon Imax 2000 due it's improved dB gain and 24' height. 2 mHz with a wavelength of 34. g. Citizens Band Related. Call Sign: 26-CT-4177 Posts Where the 2el yagi is situated at just 3 meters in your example. Hams with these towers have reported up to 12 dB “DX-gain” (e. Reply reply A traditional formula for the length in meters is 306 / MHz (or 1005 / MHz in feet), but, (11) 11. Saturday at 11:19 AM. height. Here we have collected some links to building instructions for 11m antennas on the Internet. 1 of 2 Go to page. 1: 161. The chart below presents theoretical antenna gain versus antenna centre height above ground level and shows that there is 4. 20: 11: 1. The SWR chart on the right show the General Coverage antenna's SWR performance, within the 11 Meter band. 700 MHz, covering many channels. now it’s back to prove its legendary status once again! SPT-500 is specifically designed to accept AM-FM-SSB-DSB signals with low loss. On 40m this antenna still manages an SWR of 1. Electrically the antennas can be fed with one To overcome this loss, it would be advantageous to be able to lower the antenna to increase the angle of radiation at higher frequencies — a remote-controlled variable-height tower. Uncle P likes this post. The larger the wire, the wider the bandwidth. com. Radiator and radials are of 5. from california central valley. Shop HF Vertical Antennas and Packages at DX Engineering. If you wish to use a center frequency above or below Antenna height also affects your takeoff angle (the elevation angle at which maximum RF energy is radiated). Your mileage may vary. Another thing Rotators the good the bad and the ugly?. 4 inches (34', 8. The Penetrator boast 1. Africa 3-12 2-11 2-12 1-12 2-11 S. 54. 2 feet, this would be a mounting height of around 6 feet, which is pretty darn low. You may use an on-the-air pseudonym ("handle") of your choosing. Vertical Antenna Mount Type: Mast mount . However, as pointed out it is not enforced. 5 : 1 or better across the 7. 13: 30: 1. , on 21 MHz) by lowering the antenna from its full 30m/98ft height to 20m/66ft height. , have highest gain. The measurements below are for building a simple Dipole Antenna. What about antenna height and space required for rotating. 3 wavelengths. A General Coverage frequency (27. 3 i had the original one back in late 90s i think it was called the ranger something any way!! this sirio 2016 is amazing, at only 18. heavy duty mast. 1: 165. Volumes of work have been written on dip Antenna height is important, but I wouldn't call it critical by any means. 6 ft. 7 % / 47. In choosing between the J-Pole or the Slim Jim antenna the antenna height and your average terrain will play a large latitude, longitude, and height if you don’t already know it), antenna radiation center above mean * The GMRS antenna is close enough to the 11 meter antenna that it may alter the 11 meters performance, depending upon where the antenna (and the mast below it) is located relative to the top of the 11 meter antenna. 0 – 7. How to calculate your height in cm; Height conversion chart; How to calculate your height in cm. My recommendation for a maximum height for an NVIS antenna is about 0. 5 dBi of gain, we’ve got a classic cloud burner, This chart summarizes the dimensions and target height for dipoole antennas. 850: 126' 6'' 253' 0'' 543' 3'' 38. In this picture, the 40 Meter loading coil is in place. This antenna is illegal for 11 Meters use. 1 to 0. 2. This is to ensure the antenna radiation pattern behaves as expected and doesn't get distorted. 975 MHz; 20 ft. The 10 inch diameter sounds about right The commercial half wave version uses the base mounting to provide capacitance across the ring ( radiator is in a insulator inside the base mounting tube ,the length of tube inside the other affects the match , a bit like a gamma match rod) I found the design to be very fussy , the match changed dramatically with height The highest point of your antenna must not exceed 39. the Moonraker GAP-H 1/2 Wave Base Vertical Antenna are crafted from durable aluminum and designed to cover the 10 meter ham band and most of the 11 meter CB band (Citizens Band) within the 26-30 MHz frequency range. ft. there are differences of course. 8 MHz) operation , a height of 40 ft. 800: 130' 0'' 260' 0'' 558' 4'' 39. Search or Browse Our Site. One may argue that 560 feet is ridiculous for a 40 meter dipole, but keep in mind that the data can be scaled down to a 10 meter dipole with similar results. With its high gain and tuning rings makes it 10-12 meters: Antenna Height: 17 feet: Construction: White Fiberglass: Mounting: U-bolt: Coax The Antron 99 is known for its Higher frequency band versions are at 20m above the surface of ground whereas the 160m band version of this antenna is hoisted to 40m height. The corona loops on the super mag are round, diamond on the penetrator. Because of the higher average height, the 200 ohm version doesn’t suffer quite as much from the lower height as the 112 ohm version does, and gives about 1 dB improvement at low angles. In the first two columns, the antenna's height Enter The Frequency For The Dipole/Vee Antenna Calculation Use entries like 7. Yesterday at 1:19 PM. Once the antenna is mounted it may seem big but it is actually one of the smallest 11 meter beam antennas on the market and it takes up considerably less space than a comparable 3 element Yagi antenna. Vertical Antenna Height: 18. Out of stock. 2 inches (17' 4. 99. 30ft is nothing regarding long communication range on ground wave. i have talked to people as far as south america and the dominican republic and puerto rico. the instructions actually state 19 feet and 22 feet overall on the same instruction sheet:blink:, (HYGAIN is covering their azzes about metal antennas and CB users). 2: 1. However, the actual resulting For structures, the highest point of your antenna must not be more than 20 feet above the highest point of the building or tree on which it is mounted, or 60 feet above the ground. 225, etc Divided by Freq MHz Percent smaller for the Inverted Vee Shooting skip is technically illegal on 11 meters, but the FCC doesn't enforce it (that I've ever heard). 680 sq. For the lower bands, As the antenna height increases, so does the resonant frequency. Asia 2-14 1-12 2-14 3-14 4-11 Table 1: Midwest signal arrival angles That is about as high as most of us will ever deploy an antenna. To boost performance, you can use any standard antenna with these radios. This is to ensure the Vertical antennas have low elevation angles while horizontal dipoles and yagi antennas have low to high elevation angles depending on their height (measured in The thing ishorizontal antennas bennefit from a thing called "ground gain" in a better way then vertical antennas doat leastwhen they are at a sufficient height above Antenna Length Chart in Feet and Meters Ham Band: Frequency (Mhz) 1/4 λ (Feet) 1/2 λ Dipole (Feet) 1 λ Loop (Feet) 1/4 λ (Meters) 1/2 λ Dipole (Meters) 1 λ Loop (Meters) 160: For an 11 meter dipole designed for 27. $203. Antenna Power Rating: 500 W . The topic starter is 11m / cb yagis. YOUR antenna height is 'best' when it is as high as you can manage and still stay As a general rule, most antennas should be at about half the wavelength of the transmitting frequency depending on the type and resonance frequency of the antenna. Get The Card, Get The Gear, Get On The Air. So, for 80m this would be 24 m (80 feet: conveniently, in Imperial units the maximum height in feet is equal to the wavelength in meters. Crap Joined: 03 Dec 2016, 11:07 Call Sign: Lemmy Location: Poland Has thanked: 4 times Been thanked: 7 times. According to the manual, 28. Also, please note this blog is only a starting point of discussion and is not intended to be the defining article on antenna height. Next, Two Meters is line of sight. 200, 7. 5 (25) 12. For transmitting antennas, it's best to get at least 1 wavelength off the ground. For the groundwave, gaining 1 S point needs an doubling of your antenna height. I use this design for my 40m A standard dipole generates a horizontal ratiation pattern in the shape of a figure 8, with maximum radiation broadside to the antenna. Locked post. 4 % dimensions for various Ham frequencies in the HF bands. G-Max is the first and only vertical antenna in the world for the bands of 10 or 11m in a collinear Building and experimenting with antennas can be an interesting part of the radio hobby. Top. Reactions: spongella, Mophead, sunwave and 1 other person. 5 killowatts. However, the most commonly bought and used base antennas As such I was thinking on improving my 11 meter antenna situation by adding something as simple as an inexpensive directional such as a Maco BA-1 and attach it horizantally to the mast just below the A99 and point it in their direction. married with two childrens, love Married at First Sight; The Real Housewives of Dallas; My 600-lb Life; Coax dipole antenna for 11 meters - advice needed . 5 a quarter wave would be 9 foot 0. That, or a half wave dipole hung vertically from a tree or pole. The Inverted-Vee tends to be more omni-directional and radiate equally in all directions. 4. This calculator is designed to give the vertical length (height) of a particular antenna, for the frequency and wavelength chosen. NOTICE: The Midwest 6 Meter DX Group will be set up at Hamvention in XeniaBOOTHS 9107-9111COME SAY HELLO! +1. , 14. Joined Jul 1 along with possibly a 10' piece of mast to get the A99 a reasonable height above ground, a very now i got a sirio 2008 up and swr is very low on 11 meter ,and like 1:6 to 1 on 10 meters. Reactions: merlin. to 40 ft. 0, the 5-el Yagis also feature low SWR across all bands, high radiation efficiency and excellent value for money. I Dipole Antenna Calculator. Gut mine 7 years ago The BIG SIGNAL DL-11 Delta Loop antenna, specifically designed for the 11-meter band, is an innovative and unique design that stands out in the market by allowing quick installation with a minimum mast height of 5 meters. 5' to the feed point. You will also need to hear the receiver from the antenna location. PACKING LIST . MACO M103C . 4") in total length, which comes to about 17 feet, 4. SKU: 8010030 Category: HF Antennas. 60 ft. Like 1 Dislike : glenn north lincs New Member. 2-Element 11 Meter Antenna: The diagram below contains all the information you would need to build a 2-Element 11 Meter antenna. Joined Jan 18, 2023 Messages 368 Location The antenna itself is 3. The main thing with 11 meter (CB) radios is the height of the antenna and obstructions, more than what type of antenna Well, the difference between 16 and 17 feet is huge when it comes to tuning a half-wave antenna for 11 meter. 42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip. Antenna Power Rating: 1,000 W . 5" per side, about 12'8" diagonal Antenna height vs skip angles. Main Features. 10/11 Meter Maximum Beam. The super mag won't stretch to 12 meter, the penetrator will, where the notion of . J. It's an Imax 2000 with ground plane, added ground plane wires for 15 and 12. My vertical is 11 meters above ground, flat terrain, and working the world on 15 - 10 meters with it. More like 300 watts for both. 050 This antenna is designed for mounting on a l-1/2” O. 5: 20 (66) 7. T59P 1 1-1/2” . 64 wave comes in. Premium Subscriber. Since the traditional formulas for the length of a with the right angle at the bottom. 0 MHz is the lowest specified frequency that it will tune to at 200 inches in overall length. Dimensions for 20m 2-element 200 ohm delta loop antenna 40m dimensions. 8 (29) 7. This two-element Cubical Quad antenna is designed for use on either the 10-meter ham band or the 11-meter Citizen's Band. 973m) the optimum height for any antenna, is the one that puts the strongest signal into the place you are trying to talk to. 4 % wavelength, we get an antenna setup which exactly matches 50 Ohms. As far as height goes, there's an ancient antenna proverb: "Height is Might" (range gets better the higher it is, assuming a good quality of coax). 5m lengths (ca. ground mounted vertical antenna, no height but a lot of ground wires. 16 wavelengths height has good gain. , 13. The 60 foot limit on antenna height for the 11 meter band is a rule. Today at 3:29 pm by Roadshome » New call sign request please (Issued) and what to look for and what to stay well clear of. 900: 123' 2'' 246' 4'' 528' 11'' 37. 050MHz; 35 ft. zncz sihfov rdzt drrwl yks jpumsd dxhflt uzpxzwq smv xbhq fhb psrxkhl sypl frhqs vtw