>>2937541
Maybe it's stupid but heres the idea.
Doing all this in 1206.
The entire bottom layer of the board is connected to the left terminal. So is GND on top.
Theres a hole for the right terminal. Solder a 50R upright to the terminal and stick it up through the hole. Tx line there is 2mm wide because the board is 1mm 1oz and FR-4 Er is 4.
Ironically short Tx line leads to shunt 50R
Thats followed by R1, R2 and C and a dead bug TL072 because I'm poor, besides uA741 thats all I have rn. Symmetric power from DC DC maybe ad caps. Probe between B and GND.
Since its dead bug I can get the R2 and C a bit more compact than it's implied. Should I just move everything to the terminal with the Tx line, substitute the 50R for a 0R and forget about the Tx line entirely? Maybe I can even bend the leg down through the hole to the terminal.