FMexciter
03-23-2002, 09:02 PM
The following is how I removed the PA-108, 1-watt module from my FM-100.
First, I desoldered the wire running to the center conductor of J1 (the F connector). I then removed the nuts on J1 which attached the module to the FM-100’s case. I was then able to remove the module by pulling up on it. Now, I didn’t have an F connector on the back of my radio. No problem, I just reattached the same connector, minus the module, to the rear case.
At first, I was thinking of soldering a piece of wire from the board to J1. Then I thought, if I can figure how the connector (P1) was attached to the board, I could attach a wire to the pin the connector went to. I took a look at the schematic for the PA-108 and found pin 6 went to the amplifier. I took a piece of wire with two alligator clips on each end and lopped off the excess wire (the shorter the better). I soldered one end to the center conductor of J1, and attached the clip to pin 6. The back panel is to ground as long as it’s screwed to the rest of the radio. Without hesitation, check with one of Ramsey’s techs if something doesn’t sound right.
Happy broadcasting!
First, I desoldered the wire running to the center conductor of J1 (the F connector). I then removed the nuts on J1 which attached the module to the FM-100’s case. I was then able to remove the module by pulling up on it. Now, I didn’t have an F connector on the back of my radio. No problem, I just reattached the same connector, minus the module, to the rear case.
At first, I was thinking of soldering a piece of wire from the board to J1. Then I thought, if I can figure how the connector (P1) was attached to the board, I could attach a wire to the pin the connector went to. I took a look at the schematic for the PA-108 and found pin 6 went to the amplifier. I took a piece of wire with two alligator clips on each end and lopped off the excess wire (the shorter the better). I soldered one end to the center conductor of J1, and attached the clip to pin 6. The back panel is to ground as long as it’s screwed to the rest of the radio. Without hesitation, check with one of Ramsey’s techs if something doesn’t sound right.
Happy broadcasting!