WorldwideDX Amateur Radio Forums - Amateur Radio Antennas http://www.worldwidedx.com/ sponsored by en Fri, 18 May 2012 02:07:04 GMT vBulletin 60 http://www.worldwidedx.com/images/misc/rss.jpg WorldwideDX Amateur Radio Forums - Amateur Radio Antennas http://www.worldwidedx.com/ getting ready to build a Fan Dipole, not sure what bands I should cut it for http://www.worldwidedx.com/amateur-radio-antennas/139073-getting-ready-build-fan-dipole-not-sure-what-bands-i-should-cut.html Wed, 16 May 2012 10:30:27 GMT I am planning to get the General ticket here very soon, I know that I plan to build/use a fan dipole. However I am not sure what bands I should be... I am planning to get the General ticket here very soon, I know that I plan to build/use a fan dipole. However I am not sure what bands I should be focusing on.

I am running a Yaesu FT-890 with built in autotuner (good for 3:1 swr)

I know I will be interested in 80 and 10. I have heard chit chat on 40. 20 meters seems to be mentioned often. But what about 17 and 15?

I heard the 160m is a challenge to compete with natural qrm, and as such many people have told me to not bother messing with 160m unless I plan to run a lot of power, however I still find it kinda interesting.

I have an old Antron 99 that COULD be used for something, 10 meters being the most likely choice.

I mean I guess I could build a 160, 80, 40, 20, 17, 15, 12, 10 Fan Dipole. ]]> Amateur Radio Antennas mr_fx http://www.worldwidedx.com/amateur-radio-antennas/139073-getting-ready-build-fan-dipole-not-sure-what-bands-i-should-cut.html I believe in polarization now! http://www.worldwidedx.com/amateur-radio-antennas/138901-i-believe-polarization-now.html Sun, 13 May 2012 00:35:02 GMT MIT Physics Demo -- Dipole Antenna - YouTube]]> MIT Physics Demo -- Dipole Antenna - YouTube ]]> Amateur Radio Antennas NeoHam http://www.worldwidedx.com/amateur-radio-antennas/138901-i-believe-polarization-now.html J-pole 2 meter antenna question http://www.worldwidedx.com/amateur-radio-antennas/138849-j-pole-2-meter-antenna-question.html Fri, 11 May 2012 15:45:01 GMT This is a question I probably should have asked before I bought my current J-pole. But here it is: Is there any difference in reception or... This is a question I probably should have asked before I bought my current J-pole.

But here it is:

Is there any difference in reception or propagation in a 2 meter or 70 cm antenna that uses thin rod material such as that on an automobile antenna, vs. using a many times thicker, 1/2 inch diameter rod, everything else being equal, such as material, location, cable, etc?

The J-pole I have uses thin stainless steel rod. Most J-poles seem to use 1/2 inch diameter rods. ]]> Amateur Radio Antennas Need2Know http://www.worldwidedx.com/amateur-radio-antennas/138849-j-pole-2-meter-antenna-question.html Nice big rolls of wide coax seal http://www.worldwidedx.com/amateur-radio-antennas/138732-nice-big-rolls-wide-coax-seal.html Wed, 09 May 2012 00:58:47 GMT I thought was a good deal. I used to get big sheets off of a friend that worked for Motorola, but he died. Anyways, I like these big rolls.

Huge Roll 27 Feet Coax Cable Seal Coaxial Sealant | eBay ]]> Amateur Radio Antennas m42duster http://www.worldwidedx.com/amateur-radio-antennas/138732-nice-big-rolls-wide-coax-seal.html SAL Electronics Antennas http://www.worldwidedx.com/amateur-radio-antennas/138721-sal-electronics-antennas.html Tue, 08 May 2012 15:41:41 GMT *About SAL Electronics Products* SAL Electronic’ is committed to the design and the production of HF wire antennas and VHF/UHF fixed station...
About SAL Electronics Products

SAL Electronic’ is committed to the design and the production of HF wire antennas and VHF/UHF fixed station antennas for the Amateur Radio market. Our products span the short-wave market as well as the amateur radio market. The main goal of SAL Electronic antennas is to provide a single antenna system that will provide the widest possible bandwidth available with the highest mechanical standards possible. The current HF wire antennas offer wideband end fed or Off-Center-Fed antenna designs that provide a wide frequency agile system in a single stealth, low noise wire design.

Our premier antenna is the 80 Meter OCF antenna that has been designed to provide operation for the 80 thru 6 Meter Ham Bands with minimal tuner inter-action for full legal power with minimal tuner inter-action. No tuner is required for the entire 40, 20, 17, 12, and 10 Meter bands. No tuner is required for the 50 to 51 MHz portion of the 6 Meter band as well. This is accomplished with the optimum 135 feet antenna design, which can be installed as a classic straight-line form, in addition to an inverted V, or a sloping Inverted V.

For installations where a dipole or OCF dipole does not fit, SAL Electronics offers several models of an End Fed design. Two mid-power models are available in either 90 feet or 43 feet lengths providing 160 to 6 Meters, or 80 to 10 Meters operation respect-fully. For portable operations or attic installations there is a 45 Watt low-power model available. All end fed antennas require the use of an wideband antenna tuner.

Features common to all SAL Electronics’ HF wire antennas are hand wound ferrite core transformers, a weatherproof enclosure, all stainless steel hardware, silver plated connectors, and insulated 14 gauge stranded copper wire. Why insulated wire? The insulation provides a hard-to-see jacket to minimize visual impact, prevents the wire from oxidizing to maintain optimum skin effect, and allows installation through vegetation such as trees and bushes without any adverse effects. A final note is the wire element’s attachment to the transformer and insulators. The design places all the mechanical stress on the insulator and the transformer eye-bolts. There is no stress placed in the electrical connection at the matching transformer. This design also provides the ability to remove or replace the element(s) for maintenance, or field adjustment purposes.

SAL Electronics’ offers VHF and UHF ground plane antennas built with aircraft quality aluminum materials. Our ground planes are hand machined of 6061-T6 aluminum plate for the base, and 6061-T832 hard drawn 0.058 wall aluminum tubing. Tubing elements are capped with fiberglass at the attachment ends to provide waterproofing and strong mechanical attachment. The far end of the tubing elements are capped with a vinyl foot to prevent water ingress, and to provide a soft mare free footing if used indoors on furniture for temporary installations. All electrical hardware is stainless steel, and the mounting hardware is 3/8” zinc plated steel.

All products are tested for VSWR performance using an AIM UHF antenna analyzer over and beyond the intended frequency range of operation.

SAL Electronics is designing other wide band VHF and UHF antenna systems for future deploy-ment. Future designs include Moxon beams, and wideband halo antennas for 2, 6, and 10 Meters.

SAL Electronics is located in the far Northwest Chicago suburb of Algonquin, Illinois, and can be reached at msalak@sal-electonics.com, or at 1-815-669-6567. I can also be reached at kc9q@arrl.net.

73,
Michael Salak
SAL Electronics ]]> Amateur Radio Antennas KC9Q http://www.worldwidedx.com/amateur-radio-antennas/138721-sal-electronics-antennas.html Vector 4000 on 15m 20m http://www.worldwidedx.com/amateur-radio-antennas/138649-vector-4000-15m-20m.html Mon, 07 May 2012 04:05:04 GMT I was curious to know if anyone had results using the vector 4000 on 15m and 20m with a tuner and how it worked out 73s I was curious to know if anyone had results using the vector 4000 on 15m and 20m with a tuner and how it worked out 73s ]]> Amateur Radio Antennas siltronix_man http://www.worldwidedx.com/amateur-radio-antennas/138649-vector-4000-15m-20m.html What balun or unun for these vertical antennas? http://www.worldwidedx.com/amateur-radio-antennas/138533-what-balun-unun-these-vertical-antennas.html Fri, 04 May 2012 18:54:39 GMT I saw this portable vertical antenna on ebay and am thinking about building one for myself:

PROWHIP PORTABLE HF ANTENNA, 160M - 6M , hieght 10M | eBay

I believe with these antennas they're using an UNUN, to get it to load up 160-6m right? Does anyone directions on how to build it properly? ]]> Amateur Radio Antennas Moleculo http://www.worldwidedx.com/amateur-radio-antennas/138533-what-balun-unun-these-vertical-antennas.html Interesting NVIS use anywhere HF antenna http://www.worldwidedx.com/amateur-radio-antennas/138532-interesting-nvis-use-anywhere-hf-antenna.html Fri, 04 May 2012 18:32:00 GMT One of the guys that just joined our MARS unit sells radio equipment and systems to military customers. They have unique requirements and... One of the guys that just joined our MARS unit sells radio equipment and systems to military customers. They have unique requirements and applications that are different than most hams' use cases. One such use case is the ability to put up an NVIS HF antenna that operates from 1.8-30 Mhz, be stealthy, and have reliable comms out to 200-500 miles. Here is an example of just such an antenna that he's working on and testing on our MARS net. It lays on the ground in an H configuration, about 300 feet long and uses some specialty baluns (I haven't seen them myself). Remember, the guys that would use this in the field aren't antenna experts and just need it to work. Yesterday he was able to successfully communicate with other stations about 200 miles out and he was running less than 20 watts on 7 Mhz.

Neat stuff!
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]]> Amateur Radio Antennas Moleculo http://www.worldwidedx.com/amateur-radio-antennas/138532-interesting-nvis-use-anywhere-hf-antenna.html Nice USMC Antenna Handbook http://www.worldwidedx.com/amateur-radio-antennas/138437-nice-usmc-antenna-handbook.html Thu, 03 May 2012 01:08:14 GMT Should be fair use publication: I always like the pictorial display in military manuals. There are some good portable antenna arrangements... Should be fair use publication:

I always like the pictorial display in military manuals.

There are some good portable antenna arrangements also.


http://dl.dropbox.com/u/39278999/US%...%203-40.3C.pdf ]]> Amateur Radio Antennas m42duster http://www.worldwidedx.com/amateur-radio-antennas/138437-nice-usmc-antenna-handbook.html G5RV Jr problem http://www.worldwidedx.com/amateur-radio-antennas/138436-g5rv-jr-problem.html Wed, 02 May 2012 23:19:00 GMT This is my first post after finding this great forum. New ham expermiting with a G5RV Jr and having problems tuning in 12M and 17M, 40M, 10m, and... This is my first post after finding this great forum.

New ham expermiting with a G5RV Jr and having problems tuning in 12M and 17M, 40M, 10m, and 20M works ok, but the other bands will not even get close to a usable SWR. The antenna is mounted flat on the peak of my roof 19 feet off the ground and I am using a MJF Versa Tuner and feeding the antenna to the twin lead with about 25 feet of coax. My first question how should the twin lead line be mounted? Does it need to be 90 degrees to the antenna wire? Do I need to get the antenna wire off the roof? I read somewhere that you need at least 50 feet of coax to properly connect to the twin lead. Do I really need 50 feet of coax all I need is about half that to reach my radio.

Thanks for the help. ]]> Amateur Radio Antennas ok bowhunter http://www.worldwidedx.com/amateur-radio-antennas/138436-g5rv-jr-problem.html Has anybody have a scanner in there ham shack?? http://www.worldwidedx.com/amateur-radio-antennas/138229-has-anybody-have-scanner-there-ham-shack.html Sat, 28 Apr 2012 01:39:38 GMT Here is a nice Scanner Antenna you could build for best reception in your area. This antenna took me about 6 hours to build with stuff I had... Here is a nice Scanner Antenna you could build for best reception in your area.

This antenna took me about 6 hours to build with stuff I had around the shop,
just got a scanner on ebay hope you enjoy these pics and please build your one for your self and feel free to use the one I made as a reference.. 73 s

just stick it on pole and listen away. the 5 antennae are 23.5 inches x 1/8 round long for my area. Don't try to sodier them to anything make a loop
and bolt them on. any questions just e-male me.


Thanks to Matt of ScanACT in Australia for publishing the original design..
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]]> Amateur Radio Antennas Captainlee http://www.worldwidedx.com/amateur-radio-antennas/138229-has-anybody-have-scanner-there-ham-shack.html Portable Telescoping Pole Setup Help http://www.worldwidedx.com/amateur-radio-antennas/138118-portable-telescoping-pole-setup-help.html Wed, 25 Apr 2012 15:25:45 GMT Looking for a telescoping pole setup for temporary applications at home or on the road. Currently it'd be used with a 1/2 or 5/8 wave CB/10 m vertical antenna, then for ham in the future. I'd like something that doesn't need to be guyed, or only maybe 1 set of guys that can be done in a pinch, because this would be for temporary mobile applications (camping, a day on the hill, in the yard, etc.) with not a lot of room. I'd only do this in non-windy conditions if unguyed. Is there any product available to do this? Max Gain? Aluminum push-up flag poles? I have no experience with this, and I don't know if fiberglass or aluminum bends too much, or which is better. The steel Rohn style poles are too long when stowed. What would minimum specs need to be for this application (antennas weight around 6 or 8 pounds, and are 17 to 22 feet tall)? This would be used mostly for DXing, so how high do I need to go? I've read the antenna base needs to be up 36 feet minimum for 11 meter verticals, but is this really so? I did see a very nice anodized telescoping flag pole locally, but it was only 20 feet. Seemed strong. Lots of options (materials, heights) out there and that can be overwhelming. Finally, I'd like something that collapses down into something 6 feet or so or less so it can fit in the bed of my truck. I'd likely use a drive-on base or a stakeable tripod. Thanks for your suggestions!!! I know this is a lot to answer, but any help is appreciated. ]]> Amateur Radio Antennas IronGuts http://www.worldwidedx.com/amateur-radio-antennas/138118-portable-telescoping-pole-setup-help.html HF 6-160 VERTICAL antenna best price?? http://www.worldwidedx.com/amateur-radio-antennas/137948-hf-6-160-vertical-antenna-best-price.html Sun, 22 Apr 2012 18:59:13 GMT I would like to buy a 6-160 M VERTICAL antenna to put on a base station pole probably 20 ft in the air. any good deals out their. I can make a base... I would like to buy a 6-160 M VERTICAL antenna to put on a base station pole probably 20 ft in the air. any good deals out their. I can make a base mount.

I have an antenna tuner mjb. Thanks for looking.... ]]> Amateur Radio Antennas Captainlee http://www.worldwidedx.com/amateur-radio-antennas/137948-hf-6-160-vertical-antenna-best-price.html Home Brew 10/12 meter Portable Loop http://www.worldwidedx.com/amateur-radio-antennas/137947-home-brew-10-12-meter-portable-loop.html Sun, 22 Apr 2012 18:11:59 GMT My Low Cost Magnetic Loop...]]> Small DIY Junk-box antenna for portable 10/12 Ops


My Low Cost Magnetic Loop Antenna For 10-12 Meters - YouTube




73
Jeff ]]> Amateur Radio Antennas AudioShockwav http://www.worldwidedx.com/amateur-radio-antennas/137947-home-brew-10-12-meter-portable-loop.html A 2m/70cm vertical dipole DIY . . . http://www.worldwidedx.com/amateur-radio-antennas/137926-2m-70cm-vertical-dipole-diy.html Sun, 22 Apr 2012 01:19:01 GMT Image: http://amateurradio.bz/images/2m-70cm_vertical_dipole_antenna.jpg This must be one of the simplest yet most effective DIY 2m/70cm antennas...

This must be one of the simplest yet most effective DIY 2m/70cm antennas yet.
You can build this with stuff you have laying around.
Local friend was looking to build his own antenna for cheap, so I turned him on to this:

http://amateurradio.bz/2m-70cm_verti...e_antenna.html

http://www.youtube.com/watch?feature...&v=RcO5WAiksNI ]]> Amateur Radio Antennas Robb http://www.worldwidedx.com/amateur-radio-antennas/137926-2m-70cm-vertical-dipole-diy.html