This will look like the 23' HF whip used by boaters and the wire can be
barely seen. I can't see how this would look much worse than what
boaters already do for HF except this will be ground independent.
------ Original Message ------
From: "W2xj" <[email protected]>
To: "Barry" <[email protected]>
Cc: "Robert Sands" <[email protected]>; "Frank C Richards"
<[email protected]>; "Elecraft Discussion List"
<[email protected]>
Sent: 6/9/2020 6:32:08 PM
Subject: Re: [Elecraft] K3 on motorboat.
aesthetics?
Sent from my iPad
On Jun 9, 2020, at 6:14 PM, Barry <[email protected]> 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" <[email protected]>
To: "Frank C Richards" <[email protected]>
Cc: "Elecraft Discussion List" <[email protected]>
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 <[email protected]> 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
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