i think your engineering challenge is primarily balancing esthetics against performance.
Sent from my iPad > On Jun 9, 2020, at 6:52 AM, Peter Kaletsch <pkalet...@kaletsch-gmbh.de> wrote: > > Hi folks, > > Thanks a lot for all answers and information! Some I still have to read more > accurate ana translate some special parts, because, as you can obviously read > from my post, my English is horrible. > > I tend - and of course my wife does - to have a fixed installation. So > extendable fiberglass masts or something like this is not the solution we are > searching for. > > I will think about all suggestions, try some of them and report later this > year, if there are any reporting worth solutions. We take over the boat > during the next 2 weeks and after that, there is a lot of other marine stuff > to do, before focusing on ham radio on board). > > Further answer are highly welcomed > > > 73, Peter > > -----Ursprüngliche Nachricht----- > Von: Kurt Pawlikowski [mailto:ku...@pinrod.com] > Gesendet: Dienstag, 9. Juni 2020 03:16 > An: Peter Kaletsch <pkalet...@kaletsch-gmbh.de>; elecraft@mailman.qth.net > Betreff: Re: [Elecraft] K3 working on motorboats - possible > > Peter, > > In general, any vertical works lots better with more radials. As fresh > water is a fairly poor conductor, the more the merrier! > Unfortunately, because most boats are wooden/fiberglass, what you can add > helps. I don't know if they have to be 1/4 wavelength (I've read yes and some > say at least 0.20 wavelength). For HF, this would be some serious lengths for > most boats! I expect you'd have to load them similar to the vertical element, > but I haven't read anything regarding loading > radials: It's just a guess. I suppose one could attempt to replicate, to some > extent, a solid ground plane with foil or some other conductor (maybe chicken > wire?). It would seem a lot of work (and probably is!). > If you're insistent on a vertical, it's a narrow field of variability. > Some of the portable antenna's can make loaded dipoles or verticals, which > would operate fairly well without a ground plane. Another option might be a > magnetic loop (which doesn't care much about "ground" per se. > It is affected by near-by conductors, tunes very narrowly, and is big > (compared to a mobile vertical). So, whatever you choose, it's all some sort > of compromise. > > kurtt WB9FMC > >> On 6/8/2020 3:47 PM, Peter Kaletsch 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 >> pkalet...@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 | >> i...@kaletsch-gmbh.de | Handelsregisternummer HRB 108093 | Amtsgericht >> Muenchen | Steuer-Nr: 143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz >> der Gesellschaft: München | Hinweis / reference: >> Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke >> verwendet werden. The content of this Message may only be used for the >> intended purposes. >> ______________________________________________________________ >> 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 >> ku...@pinrod.com > ________________________________ > Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) > 89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | > Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: > 143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: > München | > Hinweis / reference: > Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke > verwendet werden. The content of this Message may only be used for the > intended purposes. > ______________________________________________________________ > 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 w...@w2xj.net ______________________________________________________________ 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
