Is it possible to access the K3s sub receiver IF to use with a panadapter?
Although the connections are available to to access the K3 Sub RX IF, Elecraft has not yet released any official modifications to do so. However, some K3 users have successfully done this using the Clifton Laboratories Z10000B Buffer Amplifier. Roger, W3SZ, reported his process on a recent Elecraft reflector post: “I used the Z10000 as buffer amp inside the KRX3. I got +12V from a 12SA pad near to P86A. Power and RF connections to the Z10000 were done from the underside of the Z10000. I took IF output from KRX3 from P86A and used RG174U to take this to input of Z10000. I mounted Z10000 on an unused FL position using a 1/2 inch standoff. I mounted a dual female SMA connector in the REF hole at the bottom corner of the K3 just below the official IF out BNC. I then used a right angle pre-made small surplus coaxial cable to take the signal to the KRX3 and thus the Z10000. I entered the KRX3 at the back left corner opposite to J92, because there was already an opening there. I ran the coax
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