I need some help wit my OPTICUM LTP-04H Lot S/N:18-12-0:
I dissassembled it and I have som questions:
The crystal is on the backside. I removed it. It is connected to the 2 pads on the front (marked in the picture below).
1. Which pad should I use to insert the 24 MHz signal. The "Hot End" ? Which is it ? How can I find it with measurements ?
2. Can the crystal stay in place, when the "Cold End" is cut off ?
vy 73, Martin DL9SAD