Don, Thank you, that makes sense.
73, Jim KO5V -----Original Message----- >From: Don Wilhelm <[email protected]> >Sent: Feb 15, 2019 10:41 AM >To: Jim KO5V <[email protected]>, Elecraft List <[email protected]> >Subject: Re: [Elecraft] K2: IF Tap Point > >Jim, > >The IF take-off point normally used for the K2 is at J12 pin 1 which is >after the Post-Mixer amplifier. That point provides a signal that is >about equal in strength to the antenna input affords isolation for BFO >leakthrough. > >For everyone's information, DX Engineering is selling the Clifton Labs >buffer amplifier (but not the specific K2 version that Jack Smith (SK) >also sold. > >73, >Don W3FPR > > >On 2/15/2019 12:02 PM, Jim KO5V wrote: >> Good morning, >> >> I have a HupRF PAT tap buffer amp board for my K2's IF. I installed an SMA >> connector on the heatsink panel >> when I built the rig. >> >> Looking at the K2's block diagram, the IF is shown between the mixer and >> post-mixer pre-amp. On the schematic, >> that appears to be between Z6, pin 2, and C159. My plan is tap the >> mixer-side of C159, then attach the ground >> braid to the ground side of R80. Is this the right way to do this? >> >> I've searched this reflector, and the web, and I can't really find anything >> specific using "K2 IF out", etc. >> >> SDR kits' site (they sell G4HUP's kits since Dave passed away), and the >> HupRF site have no instructions for >> Elecraft rigs. There are links to installation instructions in the most >> popular Yaekencom radios, but not the K2, >> even though they are selling the K2 boards. >> >> Thanks again. 73, >> >> Jim KO5V ______________________________________________________________ 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 Message delivered to [email protected]
