The back pack frame would be the antenna? Low power is the game. I am not concerned. In the Vietnam era, I was in a station where we had ~5 10KW transmitters using wave guide at ~1.9Ghz and while there were very large dishes, the exposure was there. I would never worry about HF at 10 watts close to my body, but there may be studies that dispute that. I am still alive after 12 months constant exposure to agent orange. No problem. What was I writing about? :_)
(Emoji added in case the sarcasm was missed.) 73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> On Behalf Of Wayne Burdick Sent: Tuesday, January 22, 2019 2:57 PM To: Elecraft <elecraft@mailman.qth.net> Cc: KX3 <k...@yahoogroups.com> Subject: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? I’ve engaged in plenty of ultralight HF pack operation, with a KX2, AX1 antenna and a dragged counterpoise. In wide open spaces it’s a blast. But urban settings with dogs, wire-eating cacti and overzealous Neighborhood Watchers can distract from one’s radio experience. So, just for grins, I’d like to try something completely incognerdo: no visible antenna. A small remotely tuned loop (say 12” diameter) would seem to be the best choice, as it would fit entirely inside a small backpack. It could have modest efficiency while not requiring a counterpoise wire. Rigid 1” copper pipe formed in a square would be convenient to deploy. The loop would be only 6 to 8” from soft tissue, so you’d want to run QRP, of course. OTOH, we’re talking about HF. A cellphone by your ear is probably worse. Any other antenna suggestions? Wayne N6KR ---- elecraft.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9...@live.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
