Steve, One cannot usually use a spectrum analyzer "in situ" like you would an oscilloscope - the spectrum analyzer has a 50 ohm input and will load the "circuit under test" significantly. That is why you need the buffer amplifier.
73, Don W3FPR On 1/2/2012 5:35 PM, Steve KC8QVO wrote: > Just playing around here - I dug out my manual and found the RX Mixer. > I tapped the Post-Mixer Amp side of C159 and the ground side of R80 > with a length of RG-174. Then I ran that back to the receive antenna > connector on the 160 module (desoldered the wires to the 160 module). > I figured this would give me a 4.915mHz reference from which to tap > but it doesn't work too well. There's more to learn here for sure. I > figured there would be a place in the circuit I could tap to bring out > the IF to the analyzer. Would I not be correct in assuming that the > spectrum analyzer can read the same signal(s) fed to the rest of the > K2's receiver? ______________________________________________________________ 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
