Hello guys/gals, I hope someone can help me. I've used an SMA pigtail to tap the IF on my 857d so I can use it with an SDR dongle. I soldered the coax directly to the board, and am coupling to it with a capacitor and resistor outside the unit so I can tweak the values with out reopening the radio. With the SDR and coupling box disconnected the radio functions perfectly. With it connected, the SDR works great, and I can see the band the 857 is tuned to in HDSDR, but the signal into the radio drops considerably. Without, I get S9 or S9+ on my local repeater output, with it connected I get S3. Other than that it all seems ok with no other issues. It's coupled via a 100pf capacitor, then a 150ohm resistor as per the instructions I followed. I've switched the circuit for two trimmer pots in parallel so I can tweak the values, but I'm looking for some suggestions. Thanks in advance!!