HF Portable-Choosing the right antenna; How to build an inverted L for low bands.

Avoid using wires that corrode easily, or may break and lose conductivity. WebThis antenna is being built for 10 meters centered at 28.400 Mhz. I have since gotten another section of mast and, with two people, it can easily be put up at 10 feet.

The telescoping feature is important. 2 Element Helical Yagi Beam for 40m A helically wound two element 40 meter yagi beam antenna from a 1974 Approximate Free-Space Gain = 7.03 Approximate 2:1 VSWR Bandwidth = 8.77% of Design Frequency, 2.493 mhz Approximate >20 dB F-B Ratio Bandwidth =1.782 % of Design Frequency, 0.506 mhz Place a ring connector with a 5mm hole on each side of the cut wire. WebA Simple 2 Element Quad Antenna for 10 meters - Quads beams consist of 2 1 wavelength (approximately) loops, ordinarily arranged so that one is the driven element and the other is the reflector.

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breakerbroke23. From past experience I know that TV masts make good booms for smaller antennas. Living in a condo has many advantages, none of which is being able to mount a tribander on a 60-foot tower. Webohms coaxial cable with antenna's low impedance. Materials: Except the aluminum tubes and rod, you need three aluminum plates 15X15cm to support the elements up on the boom and one more plate 20X20 to support the boom to mast. At 28.4 MHz, for an antenna made of tubing and not supported at the ends, a half wavelength is 491.8 divided by 28.4 MHz, or 17.3 feet. Mostly HF beams, including the trapped Hygain TH6DXX. .

Enjoy!

I used flat plastic stock and flat aluminum stock (1 inch by 1/16 inch cut to 3 inches worked fine) held in place by copper clamps (designed to hold copper pipes to a wall).

The beams driven element should be 17.3 feet.

Place a ring connector with a 5mm hole on each side of the cut wire.

I did the same at one end of each 7/8-inch tube. Make A 10 Or 20 Metre Yagi Beam Antenna In Your Attic Radio And How To S Portable 10 Meter 28mhz 2 Element Beam Using Cb Whips By Kl7jr A Small 10 Meter Very Wide Band Yagi A Short Boom Wideband Three Element Yagi For 10 Meters How To Build A Limited E 10 And 20 Meter Band Square Halo Dx Antenna Pa9x 10 Meter Web10-Meter MoxBeam, KG4JJH 3 of 12 tension on the wire and tape, measure out 1 ft-103/ 16 inches (Figure 9, dimension B) and mark the wire.

If you are suggesting using a metal structure as the radials (aka the ground plane), then give it a try. Solder the connector to the cable instead of crimping it.

Approximate Free-Space Gain = 7.03 Approximate 2:1 VSWR Bandwidth = 8.77% of Design Frequency, 2.493 mhz Approximate >20 dB F-B Ratio Bandwidth =1.782 % of Design Frequency, 0.506 mhz As the DX faded I got a chance to test out the gain of the antenna versus my vertical antenna. })(); Make A 10 Or 20 Metre Yagi Beam Antenna In Your Attic Radio And How To S, Portable 10 Meter 28mhz 2 Element Beam Using Cb Whips By Kl7jr, A Short Boom Wideband Three Element Yagi For 10 Meters, How To Build A Limited E 10 And 20 Meter Band Square Halo Dx Antenna Pa9x, 10 Meter Technician Cl Dipole Build A For Meters, 10 Elements 50 Mhz World S Best Gain Yagi Antenna 6m10dx15, 10 6 Moxi 5 New For 2016 Meter Moxon Yagi Hybrid, Arrow Antenna 6m 6 Meter 4 Element Yagi Beam, Pg1n S Ham Radio Site Multiband Hf Beam Antennas, 2 Element Parasitic Yagis By Dk7zb 10 15 20 30 Meters, A 2 Element Direct Feed Yagi For Multiple Bands By Wb2vuo, Beam Over Doorway Crossword Clue 5 Letters, How Many Calories In A Jim Beam Black Can.

As they say, If it aint broke, dont fix it!.

When erecting the system I could simply slide the sections to the rings and tighten the hose clamps. Your mileage may vary. .

This article has been viewed 411,524 times. Magazine. The beams driven element should be 17.3 feet. Its not terribly strong, but it is lightweight. A two element 10-Meter beam designed for portable or permanent installation. Making open wire feed line; 2 element beam for 20 meters from gw0jxm; DIY Portable Discone Antenna; 49:1 End Fed Half Wave Multi-Band Antenna; New 160 Meter Antenna; 2m/70cm Ground Plane Antenna; The NE0U 160m EZ-L Antenna at WX0V; Tri It was well worth the effort.

Pull up your antenna into the trees or your tower very carefully, making sure that it is as close as possible to the design you chose to make the antenna. The beams driven element should be 17.3 feet. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. Tune: Web1-16 of 72 results for "10 meter beam antenna" RESULTS Solarcon - IMAX-2000 CB/Ham Radio Base Station Vertical Antenna, 24-Feet 4.5 (390) $30900 FREE delivery Mar 27 - 31 Or fastest delivery Sat, Mar 25 Only 9 left in stock - order soon. I then slid the un-slotted ends of the four 7/8-inch tubes into the ends of the 1-inch tubes, holding them in place with hose clamps. 1. 9-7. The three telescoping sizes available at my local hardware store were 1 inch, 7/8 inch and 3 /4 inchperfect! Were going for portability here!

wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Drilling the two holes in the angles smaller dimensionthe part that attaches them to the boomisnt critical as long as you drill the holes on the boom the same distance apart. So, how does it work? I would be building a two-element beam. To create this article, 17 people, some anonymous, worked to edit and improve it over time. This will also have an effect. A match of 1.3:1 was attainable beyond these frequencies (up to 28.6 MHz). I used 1-inch x 2 1/2-inch aluminum angle scrap because it looked about right. Your local hardware store has aluminum angle in various dimensions and lengths. I cut a piece of 5/8- inch plastic tubing to a length of 5 inches and cut the 1/2-inch aluminum rod (tubing will work) to 24 inches. In the garage I erected a 3-foot tripod.

Solder the connector to the cable instead of crimping it. This is how the material was cut up. WebThe design is broadbanded enough that you could still go up to 10 meters and talk with around a 2.0 SWR. This is a wise question! (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(hs); How to build an Hexagonal antenna in 3 hours (by EI7BA) Reflected W Beam Hexagonal Wire Beams for 40-10m from DL7IO, different mono/multiband designs with building descriptions and model files for EZNEC (by DL7IO) Otherwise you may get your adjustments all out of whack and wont know where you are. If you cant achieve a match, slide the entire matching section toward or away from the center of the driven element. *** I comment here on the sequence of the tuning process. A collection of antenna modeling files by K5TR.

Thanks to all authors for creating a page that has been read 411,524 times. It helps in transportation and makes tuning the antenna a snap. . These particular verticals come with a tuning adjustment that will enable them to be used even down to 20 meters with a tuner. Theyre lightweight, strong and readily available at most Radio Shack and home stores.

Web1-16 of 72 results for "10 meter beam antenna" RESULTS Solarcon - IMAX-2000 CB/Ham Radio Base Station Vertical Antenna, 24-Feet 4.5 (390) $30900 FREE delivery Mar 27 - 31 Or fastest delivery Sat, Mar 25 Only 9 left in stock - order soon. wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. This assembly was mounted to the driven element so that the larger end (the one with the bolt) was directly under the center of the element and the two tubes were four inches apart center-to-center. I would make the adjustments while Donna, visible through the shack window, keyed the transmitter and recorded the SWR readings. I make a chart with frequency on the Y axis and antenna length on the X axis. The beam had to fit in the trunk of my Subaru (limiting the largest component to about four feet in length) and had to be easy to assemble and erect on site by one person. I then enter the lowest SWR point (resonance) at the appropriate X-Y position. WebOne commercially made antenna mfg that can be easily tuned to 10 meters is the Solarcon Antron 99 series and the Solarcon Imax 2000 verticals with great success. 21K views 2 years ago. , When making this adjustment, you want to be sure that the plastic tube and center bar slide together, as a single unit, within the outer tube, insuring that the plastic tube and bar ends remain flush. You need a length of 5.3m and 10.6m of cable respectively for the 10 and 20 meter band. Wireless is what they called it back then, and still to this day, wire antennas are sending signals out on the airways.

As I change the length I can easily see whats happening. Inductance of the arm is tuned out by means of a capacitor.

Sound Card Interfacing for RTTY, PSK31, and SSTV, A low cost 600 watt ultra-linear amplifier, VE7AVV YAESU FL-2100Z Amplifier Repairs. To accommodate my Subaru factor, four feet divided by 2 x 17.3 feet produces a boom length of 0.116 wavelength, a size that gives a nice gain and a feed-point impedance that can be easily matched to your coax line. Box or rectangle loop, or a triangle, spacing them out as much as possible. N5ESEs 87 ft Inverted L Portable Antenna?

It helps in transportation and makes tuning the antenna a snap. A two element 10-Meter beam designed for portable or permanent installation.

The fact that it was only four feet off the ground would have little effect on the tuning, although the overall performance would be affected by the high angle of radiation. It performs well and can be erected by one person in about 15 minutes.

WebOne commercially made antenna mfg that can be easily tuned to 10 meters is the Solarcon Antron 99 series and the Solarcon Imax 2000 verticals with great success. The TV mast (with the crimped end lopped off) fits in my trunk and allows two elements to be mounted 4 feet apart and fed with RG58 coax.

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