new subscriber and first question
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new subscriber and first question
 
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Hello;
I just put together my K3/100 with ATU. What a great transceiver! Now I need to hook it to my vintage Collins 30L-1 linear amp. The manual says the K3 can handle up to 200 volts on 'key out'. That might mean I can hook up directly to the linear. One question is whether that also means minus 200v. The Collins has -170vdc on its connector. I was thinking the K3 uses relay contacts for the 'key out', but maybe not. Second question is whether the K3 schematics are available? The powerful configurability of the K3 means I have a learning curve to go thru. I think this reflector will be a big help. Searching the archives will probably solve a lot of questions and then there is the 'live' community. Very good. I also subscribed to the yahoo group. 73s Doug N8VY ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: new subscriber and first question
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Hello DOug!
> I just put together my K3/100 with ATU. What a great transceiver! > > Now I need to hook it to my vintage Collins 30L-1 linear amp. The manual > says the K3 can handle up to 200 volts on 'key out'. Positive only, not negative. > ... I was thinking the > K3 uses relay contacts for the 'key out', but maybe not. Key out does not use a relay. > Second question is > whether the K3 schematics are available? PDF format download is in the manuals section of the Elecraft website. 73, Lyle KK7P ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: new subscriber and first question
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In reply to this post by Doug Basberg
No, the K3 CANNOT switch a negative voltage for keyout! It is a solid-state circuit which
is quite robust (+200v at 5A), but only for positive DC voltages. K3 schematics are here: <http://www.elecraft.com/manual/K3_Schematics_Jun_2010.pdf> On 8/31/2013 3:52 AM, Doug Basberg wrote: > Hello; > > > > I just put together my K3/100 with ATU. What a great transceiver! > > > > Now I need to hook it to my vintage Collins 30L-1 linear amp. The manual > says the K3 can handle up to 200 volts on 'key out'. That might mean I can > hook up directly to the linear. One question is whether that also means > minus 200v. The Collins has -170vdc on its connector. I was thinking the > K3 uses relay contacts for the 'key out', but maybe not. Second question is > whether the K3 schematics are available? > > > > The powerful configurability of the K3 means I have a learning curve to go > thru. I think this reflector will be a big help. Searching the archives > will probably solve a lot of questions and then there is the 'live' > community. Very good. I also subscribed to the yahoo group. > > > > 73s Doug N8VY > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: new subscriber and first question
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Suggest you use one of those amp keyer interfaces for this amp. As an
option, also look at the universal keying adapter from HamGadgets.com. http://www.hamgadgets.com/index.php?main_page=product_info&cPath=21&products_id=128&zenid=r3o0i7qb2ikjcqj299lq3pudb2 73 Greg AB7R On 9/3/13, Vic K2VCO <[hidden email]> wrote: > No, the K3 CANNOT switch a negative voltage for keyout! It is a solid-state > circuit which > is quite robust (+200v at 5A), but only for positive DC voltages. > > K3 schematics are here: > > <http://www.elecraft.com/manual/K3_Schematics_Jun_2010.pdf> > > On 8/31/2013 3:52 AM, Doug Basberg wrote: >> Hello; >> >> >> >> I just put together my K3/100 with ATU. What a great transceiver! >> >> >> >> Now I need to hook it to my vintage Collins 30L-1 linear amp. The manual >> says the K3 can handle up to 200 volts on 'key out'. That might mean I >> can >> hook up directly to the linear. One question is whether that also means >> minus 200v. The Collins has -170vdc on its connector. I was thinking >> the >> K3 uses relay contacts for the 'key out', but maybe not. Second question >> is >> whether the K3 schematics are available? >> >> >> >> The powerful configurability of the K3 means I have a learning curve to >> go >> thru. I think this reflector will be a big help. Searching the archives >> will probably solve a lot of questions and then there is the 'live' >> community. Very good. I also subscribed to the yahoo group. >> >> >> >> 73s Doug N8VY >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > > -- > Vic, K2VCO > Fresno CA > http://www.qsl.net/k2vco/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: new subscriber and first question
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In reply to this post by Vic Rosenthal
I have a Collins 30L-1 I use with my K3. BUT several years ago (before I got
the K3) I installed a "Soft-Key" kit from ... I think Harbach. Works fine and solved that problems 73, Mike WA5POK -------------------------------------------------- From: "Vic K2VCO" <[hidden email]> Sent: Tuesday, September 03, 2013 12:14 PM To: <[hidden email]>; <[hidden email]> Subject: Re: [Elecraft] new subscriber and first question > No, the K3 CANNOT switch a negative voltage for keyout! It is a > solid-state circuit which is quite robust (+200v at 5A), but only for > positive DC voltages. > > K3 schematics are here: > > <http://www.elecraft.com/manual/K3_Schematics_Jun_2010.pdf> > > On 8/31/2013 3:52 AM, Doug Basberg wrote: >> Hello; >> >> >> >> I just put together my K3/100 with ATU. What a great transceiver! >> >> >> >> Now I need to hook it to my vintage Collins 30L-1 linear amp. The manual >> says the K3 can handle up to 200 volts on 'key out'. That might mean I >> can >> hook up directly to the linear. One question is whether that also means >> minus 200v. The Collins has -170vdc on its connector. I was thinking >> the >> K3 uses relay contacts for the 'key out', but maybe not. Second question >> is >> whether the K3 schematics are available? >> >> >> >> The powerful configurability of the K3 means I have a learning curve to >> go >> thru. I think this reflector will be a big help. Searching the archives >> will probably solve a lot of questions and then there is the 'live' >> community. Very good. I also subscribed to the yahoo group. >> >> >> >> 73s Doug N8VY >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > > -- > Vic, K2VCO > Fresno CA > http://www.qsl.net/k2vco/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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