I thought I'd update this for the "junkyard" types out there.? Here is the digital rig.? RPi 3 is usually my backup APRS setup, so a Baofeng audio discombublator is on top.? FT8 QSO's from Italy, Cuba and Venezuela today from Central Texas.
Audio isolator to the right (2k + 0.1uF and 600:600 transormers), I used some cheap 3.5-3.5 cables peeled and split with teeth.? Multimeter can be seen on the input side setup for current monitoring.? I didn't have any alligator clips, so I spun the wire around the multimeter leads and used the caps as clamps.? 1.8MHz high-pass on the right/top, local AM station overload.
