80m Limited Space Antenna. Post #1035.

80m Limited space Antenna
(http://www.dxzone.com/qsy32048-80m-limited-space-antenna).
Accessed on 07 February 2017, 00:50 hrs, UTC.
Author:  Mike Dennis (G7FEK).
Please click link or insert title URL into your browser search box to read the full article.  Mike supplies a link to download the pdf for this antenna.

Comment:

Here's another HF multiband antenna that will appeal to radio amateurs with small urban lots or whose homes are deed-restricted.  This antenna covers all amateur radio bands between 80 and 10 meters, with 20 meters and 10 meters requiring some additional wire and an antenna transmatch ("ATU" or "Tuner") to work properly.  Most bands can be used without a "tuner".

Mike Dennis (G7FEK) bases his antenna design on the classic "Zeppelin" and W3EDP antennas of the 1920's and 1930s.  The antenna consists of two elements, one being 38 feet/11.7 meters long and the other one cut for 8 feet/2.5 meters long.  A balanced feed line measuring 24 feet/7.4 meters long is shorted at the end and connected to a 50 ohm coaxial cable which goes to your rig. The balanced feed line is a radiating portion of this antenna.  The antenna uses two counterpoise wires, one measuring 65 feet/20 meters and the other cut to 33 feet/10.06 meters.  The antenna works well on 30m, 40m, 30m, 17m, 15m, and 12m.  Operation on 20m and 10m is possible with a few minor modifications.

In his downloaded pdf, Mike provides photographs, excellent drawings, construction details, and basic operating tips.  Mike says the antenna should be used as a horizontal antenna.  If you have limited space and want to work several HF amateur radio bands, then this antenna may be for you!

For the latest Amateur Radio news and information, please visit these sites:

http://www.HawaiiARRL.info.
https://oahuarrlnews.wordpress.com.
https://bigislandarrlnews.wordpress.com.
http://www.kh6jrm.info (breaking news for radio amateurs).

Other sites of interest:

https://hawaiisciencedigest.com (latest science and technology news for radio amateurs).

https://hawaiiintelligencedigest.com (latest trends in geopolitical intelligence, strategic forecasting, terrorism, and cybersecurity).

Opinions expressed in this blog are mine unless otherwise stated.

Thanks for joining us today!

Aloha es 73 de Russ (KH6JRM).

Related articles

Comments

Post a Comment

Thank you for visiting my Amateur Radio Blog. I value your comments and suggestions. For Amateur Radio Antenna Topics and Discussions, stay here. For Amateur Radio News and Trends, please visit my news site at https://bigislandarrlnews.com.
Aloha es 73 de Russ (KH6JRM).

Popular posts from this blog

Building a ZS6BKW antenna from scratch. Post #1559.

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=BfUbL_4VCww. The G5RV and its popular variant, the ZS6BKW, are popular multiband HF antennas for radio amateurs. In this video, members of the Stamford Amateur Radio Association W1EE,  show us how to build a ZS6BKW antenna capable of covering the 80 to 6 meter amateur radio bands.  Here are the guidelines offered by this construction team: "The ZS6BKW is the successor to the G5RV. It's a multi-band 80-6 meter wire dipole. ZS6BKW started with the G5RV and then conducted extensive computer modeling to increase the gain, flatten the SWR a bit, and smooth out the lobes. It's also about 10 feet shorter than an equivalent G5RV. The antenna must be fed with 39 feet of 450 ohm ladder line and also must have at least 70 feet of coax feeding the ladder line. The coax and ladder line together form a matching network that brings the SWR below 2:1 (
Read more

Antenna for Condo Backyard-Stealth. Post #1542.

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MXTYTytR56A. Don't let deed-restricted properties (HOA/CC&R) stop you from enjoying Amateur Radio.  In this video from AC2RJ, we see how some well-placed trees, a camera tripod, a telescoping fiberglass mast, and a "V" antenna can get you on the air without a lot of effort.  Add an antenna "tuner", a sturdy rig, such as the Yaesu FT-817, a microphone/cw key, and a simple grounding system, and you have a fully functional, nearly invisible ham station in your backyard. For the latest Amateur/Ham Radio news and information, please visit these web sites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://amateurradionewsinformation.com (Amateur Radio News &
Read more

G5RV Multi Band HF Dipole Antenna. Post #1555.

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=aeNHIQ_j4Dk This well-produced and richly illustrated tutorial on the classic G5RV HF Dipole Antenna was presented to the Brandon Amateur Radio Society in Brandon, Florida in 2017 by Bernie Huth (W4BGH).  Bernie does an excellent job of  explaining the pros and cons of this popular HF antenna from the late Louis Varney (G5RV).  Although Varney envisioned his design primarily as a 3/2 wavelength antenna for the 20 meter Amateur Radio band, radio amateurs have used the antenna for multiband use.  The G5RV is an excellent choice for the 20 meter band.  Performance on other HF Amateur Radio bands is good enough to qualify as stand alone HF antenna if you can only erect one HF antenna. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a wee
Read more