An easy to build antenna for seaside locations 17m and 15m versions were used at 9M0O DX-pedition in 2016
• Wire lengths R and D are from the boom center line.
• My suggestion is that wire ends are not bent around an egg or so. The dimensions are not valid in such a case.
• Good choice for the driven element center isolator is a commercial isolator with UHF-connector. The coax center conductor is connected to the upwards going wire.
• Current balun is at least 3 pcs Amidon FB-43-1020 or similar on the coax cable next to the feed point.
• Cable route to the feed point is from the back of reflector, along the boom. Cable influence is then minimal. • An easy way to fine tune SWR is to adjust distance between element lower ends
. • Bringing them closer to each other resonant frequency goes downwards, and the opposite
• Cable ties are good for temporary installations. They fix everything in this antenna. • Spiderbeam telescoping masts are good for this antenna. Fishing rod is good for the boom.
• Salt water makes angle of radiation low. Also losses in ground reflection are low and antenna gain therefore close to 10dBi. See More in .pdf file :
To strengthen the relationship between Thai and Japanese amateur radio operators representatives of the JAMSAT group of Japan have travelled to Thaila... Read more
ARRL has produced and is making available the downloadable video, “What is Amateur Radio?” to use at club meetings and at public events, including ARR... Read more
Three BIRDS-3 satellites with Amateur Radio payloads are scheduled to be deployed from the International Space Station on Monday, June 17. The BIRDS-3... Read more
The ARRL Foundation has announced the 2019 recipients the scholarships it administers. The ARRL Foundation General Fund Scholarship, $2,000 each Maris... Read more
GIBSON, Pa. — One person is dead after falling while trying to make repairs to a ham radio in Susquehanna County. The coroner tells Newsw... Read more
Kids Day is Saturday, June 15 — an opportunity to get youngsters on the air to share in the joy and fun that Amateur Radio has to offer. Kids Day gets... Read more
The International Amateur Radio Union Region 1 Monitoring System (IARUMS) reports a “new kind” of over-the-horizon (OTH) radar on 20 meters. The intru... Read more
Meeting right after Dayton Hamvention® at the University of Dayton on May 20, the ARRL Board’s Executive Committee (EC) adopted a motion to establish... Read more
WSJT-X developer Joe Taylor, K1JT, has tentatively concluded that there are good reasons to use both FT4 and FT8 in ARRL VHF contests. The latest beta... Read more
Paul Bourque, N1SFE, of Middletown, Connecticut, has joined the ARRL Headquarters staff as Contest Program Manager. He succeeds Bart Jahnke, W9JJ, who... Read more
News
HS10KING on QO-100 geostationary satellite
ARRL Offers “What is Amateur Radio?” Video and PowerPoint Presentation
Ham Radio Satellites to Deploy from ISS
ARRL Foundation Announces 2019 Scholarship Recipients
One Dead After Tower Collapse in Susquehanna County
Saturday, June 15, is Kids Day
Over-the-Horizon Radars Continue to Plague Amateur Bands
ARRL Executive Committee Establishes Ad Hoc Committee on Communications
WSJT-X Developer Posts Observations On Using FT8 In June VHF Contest
Paul Bourque, N1SFE, Joins ARRL Headquarters Staff as Contest Program Manager
