aesthetics? Sent from my iPad
> On Jun 9, 2020, at 6:14 PM, Barry <k3...@comcast.net> wrote: > > Full size verticals are hard to do on small power boats. And elevated > grounds are also hard. Water grounds are usually the most practical, but > fresh water is not great. I counsel inverted Vs as they are ground > independent. On power boats that too is a tough trick, but it can be done, > depending on size of the boat. A 40 meter dipole can be made by bending the > ends and can be fed with coax through a 4:1 current balun if the run to the > radio is not too great. It will require a fiberglass mast bracketed to the > fly bridge. There are several suppliers of good, strong push up masts > available; I wouldn't go more than about 25 feet which should put the feed > about 31 or so feet over the water,m close to a 1/4 wave on 40. This > arrangement will allow all band operation above 40 with a K3 as the tuner is > just plain magic. > > 73, > Barry > K3NDM > > ------ Original Message ------ > From: "Robert Sands" <k7vora...@gmail.com> > To: "Frank C Richards" <prpnt...@gmail.com> > Cc: "Elecraft Discussion List" <elecraft@mailman.qth.net> > Sent: 6/9/2020 3:22:27 PM > Subject: Re: [Elecraft] K3 on motorboat. > >> Verticals require more attention to ground but the goal should be to >> increase the antenna current, thus increasing radiated signal. ground into >> water seems like a waste but has DC grounding value. I use hung vertical >> dipoles (20 and 15) with no need for ground and they work amazingly well. I >> have tried letting wire or zinc ribbon strips drop into saltwater to >> ground verticals and there is no value I can detect over something simpler, >> like tying to existing structures or running a above water wire >> counterpoise. Vertical dipoles require no Rf ground and propagate at low >> angle and high efficiency. Far effects over water are what counts, more >> than grounding, except in verticals to get higher antenna current. >> K7VO >> >>> On Tue, Jun 9, 2020 at 7:38 AM Frank C Richards <prpnt...@gmail.com> wrote: >>> >>> Having been in the marine electronics business I was able to successfully >>> install many HF radios on boats from large steel commercial fishing boats > ______________________________________________________________ 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
