The shrimp boats often used a 108" stainless steel CB whip on a spring, and a large copper plate on the outside of the hull under water. They got out very well on 11M. With modern rigs and built in tuners, you could probably do well on 10, 12, 15 and 17 M too.
73 John N5CQ -----Original Message----- From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> On Behalf Of Jim Brown Sent: Monday, June 8, 2020 7:18 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 working on motorboats - possible On 6/8/2020 1:47 PM, Peter Kaletsch wrote: > But how do I get a reasonably effective earth? You don't need an "earth," you need a counterpoise. VE0JS, who has sailed around the world four times on a 37-ft sail boat, loads the backstay against a sintered bronze plate in the water. I suggest that you do something similar for the vertical, and one or more wires strong along the boat as a counterpoise. She has a remote tuner at the base; the feedline in your boat will probably be short enough that you can use a tuner built into the radio. A bunch of us in North America have worked her from the south Indian Ocean on 40M. She's running an ICOM marine radio, SSB only, with no voice processing. Check out her qrz page. 73, Jim K9YC ______________________________________________________________ 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 woyb10...@outlook.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
