I have a uhf msr2000 which I recently changed frequency to 464.075/469.075.
Original freq was about 1.5mhz away. I sent the elements in and had them
recrystaled. After I installed them and tuned up the receiver it worked pretty
well for a month. I noticed it loosing sensitivity lately so I got out the
service monitor to check sensitivity. Here is the problem. If you tune the
frequency trimmer for best quieting you get very scratchy audio. If you tune
for best audio you loose sensitivity. I did not bother the discriminator coil
but if it is misaligned will that be my problem? If aligned for best quieting
it breaks squelch at around .21uv but at best audio recovery it only makes
.8uv. This is with the generator passing through the duplexer with the
transmitter disabled. The duplexer is factory Motorola. This is a 110 watt
intermittent duty repeater and I am getting 65 watts out of the duplexer. Does
this sound about right for this machine?
WB5OXQ
