Howdy group.
I have a Motorola MSR2000 repeater on the ham bands that I maintain.
VHF 147.32 in Austin (Oak Hill)Texas.
It has developed a hum on the receive signal. I know it's the receiver
as there is no hum when the machine ID's with no input from the
receiver. The hum has been getting worse and now I need to take a look.
I have schematics and instruments. I'm asking to see if anyone has seen
this kind of issue before. I run a 114.8 PL but it sounds more like
60Hz not 114 hz I'll have to look at the audio and measure.
The machine is on IRLP if anyone wants to take a listen the node is
3364. Any input would be helpful. Jim K5VPW monitors the machine and
runs the IRLP node so he may be listening and is willing to assist.
Bill N5ZTW