I just got a used Kenwood tm241a. It was working fine on my friends antenna until I took it home and hooked it up to a used Larsen nla-mm antenna I bought at a ham-fest.
It seemed to work fine on that antenna for a bit until I was hearing a weird hum out of the speaker on the higher edge of the 2 meter band on 50 watts. My Baofeng handheld picked up all of this spurious emissions on any frequency I tuned to.
I then decided to test it one more time with a friend on a repeater, and it transmitted this weird one-tone beep when I keyed up the microphone, and didn't stop when I unkeyed it, the transmitting stopped only when I unplugged the microphone, rebooted the radio, and plugged the mic back in. The beep pitch changed by pressing different buttons on the mic, but wasn't the familiar two-tone DTMF, and was a one-tone beeping.
Is this radio fried, or is there a way to fix it? Does the DTMF mic possibly have a problem, or is it most likely an internal radio issue? The day I finally got a nice 50 watt radio for my net control, and the courage classic bike race, It burned out. I cant see a nice kenwood die, and as a cheapo high school student, cant afford a new radio :(