Phil: Here is a kit to consider... it's easy to assemble.
http://www.hamgadgets.com/store/product_info.php?cPath=21&products_id=75 Jed AD7KG On Wed, Dec 16, 2009 at 3:24 PM, Paul Christensen <[email protected]> wrote: > Phil, > > The closest you're going to get to plug-'n'-play amplifier isolation is by > purchasing a commercial keying buffer, one for each amp and split the K3 > key > line three ways to the input of one of these devices. The output from each > device would go to its own amp. For three devices that's USD $90-$180 > depending on the model + the cost of cables. > > http://www.theheathkitshop.com/page13/page13.html > > http://www.radiobooks.com/products/svkr.htm > > http://www.ameritron.com/Product.php?productid=ARB-704 > > By contrast, three silicon diodes can be purchased with pocket change and > can be easily inserted into RCA plugs with just a bit of soldering > necessary. > > Paul, W9AC > > ----- Original Message ----- > From: "Phil LaMarche" <[email protected]> > To: "'Paul Christensen'" <[email protected]>; <[email protected]> > Sent: Wednesday, December 16, 2009 4:58 PM > Subject: RE: [Elecraft] K3 Amplifier Keying > > > > > > Wow! Not being an engineer, I didn't think it would be so difficult. > > Many > > replies, thank you. Is something commercially availiable for a non > techie > > like me? > > > > Phil > > > > > > Philip LaMarche > > LaMarche Enterprises, Inc. > > www.instantgourmetspices.com > > > > www.w9dvm.com > > 800-395-7795 pin 02 > > 727-944-3226 > > FAX 727-937-8834 > > NASFT 30210 > > > > K3 #1605 > > > > CCA 98 00827 > > CRA 1701 > > > > W9DVM > > > > > > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of Paul Christensen > > Sent: Wednesday, December 16, 2009 4:50 PM > > To: [email protected] > > Subject: Re: [Elecraft] K3 Amplifier Keying > > > > Phil, > > > > You may want to isolate all three key lines using one of the many keying > > buffers available. At an absolute minimum, consider using three steering > > diodes if only using a splitting RCA jumper cable from the K3 to the > amps, > > using one diode (e.g., 1N4007 or if necessary, a Schottky type) for each > > amp > > key line from the K3 with all the cathodes combined together and pointing > > back to the K3 amp key line. > > > > The ne-plus-ultra solution for selecting one of three amps from one of > > three > > rigs may be available in the very near future from W8ZR... > > > > http://www.w8zr.com/homebrew/StationPro.htm > > > > Paul, W9AC > > > > ----- Original Message ----- > > From: "Phil LaMarche" <[email protected]> > > To: <[email protected]> > > Sent: Wednesday, December 16, 2009 4:28 PM > > Subject: [Elecraft] K3 Amplifier Keying > > > > > >> My K3 will be keying 3 amplifiers....144...50 and HF. I have two amp > >> keyers > >> that can be used or just one. Should I find an RCA cable with 3 females > >> and > >> one mail or does anyone have a better suggestion. > >> > >> Thanks > >> > >> Phil > >> > >> > >> Philip LaMarche > >> LaMarche Enterprises, Inc. > >> <http://www.instantgourmetspices.com/> www.instantgourmetspices.com > >> > >> www.w9dvm.com <http://www.w9dvm.com/> > >> 800-395-7795 pin 02 > >> 727-944-3226 > >> FAX 727-937-8834 > >> NASFT 30210 > >> > >> K3 #1605 > >> > >> CCA 98 00827 > >> CRA 1701 > >> > >> W9DVM > >> > >> > >> > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:[email protected] > >> > >> 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:[email protected] > > > > 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:[email protected] > > 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
