circuit board

TLDR: I'm looking for a very lightweight ( < 50 g) and cheap ( < $25) 2-meter transmitter that stacks directly on top of an associated microcontroller, similar to the ones that exist for 33 cm and 70 cm. It needs to transmit data collected by the microcontroller to an FTM-300DR transceiver up to...

I'm sure you are all familiar with the Grundig FR-200. AM/FM and SW in 2 bands. took it all apart working on some other stuff, what do these trimmers do? and I don't see anything for FM also VC1 and VC2 have screws sticking out all crooked. VC1 isn't even on the PCB straight. what's up with...

I am wanting to verify some info before try this repair. Actually, I have 2 minitor 4's, with issues, but what I'm gonna describe is only happening on one pager. The main problem I have is continuous squelch, when monitoring radio transmissions, and when I squeeze the pager, frt & back together...

I was recently given a TR-2500 with three power adapters. One is a disposable battery adapter and the other two are for ac and dc plug in connections. The radio works just fine off of batteries but not off of the ac or dc connection packs. I need to repair these so I can use them. I found the...