I started to look into putting together a 110 MHz demod board to be used as POP110 (see #8399).
We have five spare old-skool EuroCard demod boards (LIGO-D990511). From what I gather (see #4538, #4708) there are two modifications we do to these boards to make them ready for prime time:
#4538 also describes some other modifications but I'm not sure if those were actually implemented or not:
What we'll need for a 110 demod:
I'll scrounge or order.