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 :
All about Multimeters – Ham Radio Q&A Read more
Nominations for the 2021 Hamvention Awards will open on November 1. Hamvention will grant awards in the categories of technical achievement,... Read more
Robert Bankston, KE4AL, of Dothan, Alabama, is the new president of AMSAT. The AMSAT Board of Directors elected Bankston at its annual meeting on Octo... Read more
The Logbook of The World (LoTW) Committee worked with WSJT-X developer Joe Taylor, K1JT, to harmonize the designation of FST4 among WSJT-X, the ADIF s... Read more
Regarding this year’s Ham Fair 2020, we have unavoidably canceled the prevention of the spread of the new coronavirus infection and ensuring th... Read more
A new paperback aimed at the Amateur Radio Emergency Service Community, Power Out! After-Action Report and Improvement Plan by Susan Halbert, KG4VWI;... Read more
The 15th Annual ARRL Online Auction is now open for registration and bidding. The 2020 ARRL Online Auction includes a large assortment of QST “Product... Read more
The winning article for the October 2020 QST Cover Plaque award is “Ham Bootcamp: Getting Hams On the Air” by Fred Kemmerer, AB1OC. The... Read more
In comments to the FCC, ARRL targeted two specific areas of concern regarding a Further Notice of Proposed Rulemaking (FNPRM) in IB Docket 1... Read more
It’s here! The ARRL Handbook for Radio Communications for 2021 — your complete guide to radio experimentation, discovery, and innovation — n... Read more
News
All about Multimeters – Ham Radio Q&A
2021 Hamvention Award Nominations Open on November 1
Robert Bankston, KE4AL, is New AMSAT President
ARRL Logbook of The World Harmonizes Designation of FST4 Protocol
Ham Fair 2021
Florida ARES Group Publishes After-Action Book
Now Open! The 15th Annual ARRL Online Auction
AB1OC Wins the October 2020 QST Cover Plaque Award
ARRL Comments in Orbital Debris Mitigation Proceeding
2021 Edition of The ARRL Handbook and New Microcontroller Projects Book Available
