Kim,
You're in better shape than Peter. You are operating in real salt
water. You could easily put up a 23' marine HF antenna or use a Tarheel
or almost anything else and you could use a Dynaplate ground, available
at West Marine or Defenders. I used a backstay against a Dynaplate on
Chesapeake Bay and in the Bahamas. Using sea water vice brackish water
made a big difference.
The issue is you need an electrical 1/2 wave. The various whip type
antenna are only 1/2 the needed antena. Thw orher half is represented in
the ground. That is why have a good ground is so important or use a
ground independent antenna like a dipole variant. See the note I just
wrote to Peter that should be here on the reflector.
73,
Barry
K3NDM
------ Original Message ------
From: "M. Bottles via Elecraft" <[email protected]>
To: "Peter Kaletsch" <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: 6/8/2020 5:47:40 PM
Subject: Re: [Elecraft] K3 working on motorboats - possible
I am also very interested in answers to this question, please include me with
suggestions if you email direct outside of the reflector. I have a 15.25 meter
motorboat on salt water )Puget Sound.) Thank you, Kim - K7IM
[email protected]
On Jun 8, 2020, at 1:47 PM, Peter Kaletsch <[email protected]> wrote:
Hello fellows;
You are my last hope as I cannot imagine that I am the only one in the world
who wants to try that.
For many months I have been trying in vain to get tips on how to operate a K3
well on a small 13 meter motor yacht. I am talking about fresh water usage
(Lake Garda in Italy), not salt water, and of a GFK built boat.
A dipole is eliminated, it is not a sailing boat. I thought of using a Tarheel
Antenna, but the manufacturer advised me against it.
So normal, shortened mobile antennas, mounted on the device carrier, where
also the antenna for marine radio is located, should point the way ...?
But how do I get a reasonably effective earth? I read a lot of negative things
about ground plates - fast growth, the hull has to be pierced.
I have already considered laying radials from the antenna base below deck in
the invisible area, but will this work...?
I am very grateful for every tip and every help - also to
[email protected]
Thanks in advance
Peter - DL1MDZ
________________________________
Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0)
89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | [email protected] |
Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr:
143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft:
München |
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