> There is an RF choke between K3 chassis ground > and pin 5 and 12, thus isolating that ground connection. I > don't think that will be a problem. Does anyone have another > view?
The RF choke in the ground return line is an invitation for a "pin 1" problem as documented in several presentations by K9YC. If you are using the 12V output of the K3 to control power on/power off in the Quadra, simply connect the power and ground leads at the K3's Aux 12V RCA jack. 73, ... Joe, W4TV > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Jim Brassell > Sent: Wednesday, February 25, 2009 5:38 PM > To: [email protected] > Subject: [Elecraft] Cables for the K3 to Yaesu Quadra Connections > > > I have a quick question concerning the 12 VDC connection > between the Quadra and the K3. I want to use the RF isolated > ground of the K3 for the 12 volt connection. My plan is to > connect the RCA plug without a ground connection on the plug > and use pin 5 on the accessory plug as the 12 volt ground > reference. There is an RF choke between K3 chassis ground > and pin 5 and 12, thus isolating that ground connection. I > don't think that will be a problem. Does anyone have another view? > > Thanks for your time and any comment. > > 73, > > Jim, K4ZMV > ______________________________________________________________ > 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
