[Elecraft] K3 working on motorboats - possible

[Barry]

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" <elecraft at mailman.qth.net>
To: "Peter Kaletsch" <PKaletsch at kaletsch-gmbh.de>
Cc: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
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
>
>k7im at icloud.com
>
>>  On Jun 8, 2020, at 1:47 PM, Peter Kaletsch <PKaletsch at kaletsch-gmbh.de> 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 pkaletsch at kaletsch-gmbh.de
>>
>>  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 | info at kaletsch-gmbh.de | Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: München |
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