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Good evening. Sorry to resurrect an old thread. Do you still happen to have the 810e in mont condition? Many thanks- Bryne N7BB/2AT405

Thank you for posting this. The Grant LT is a 5 pin radio, btw. I wonder if the other offerings from Shure would work instead? The schematics are a little different. There's the 514B, the 577B, and the 596LB. The 596LB is 400 ohms - closest to matching the impedance of the Grant LT, I think...

Good Morning. I'm wondering if anyone can comment on how to wire a Shure 527 B to a 5 pin Uniden Grant? I still can't figure this out. I haven't worked on it in awhile. Previously someone posted a drawing, but I see the image isn't available for viewing any longer. Any help would be...

I want to revive this old thread. I have a Shure 527B microphone. I'm trying to wire it to a 5 Pin plug for a Uniden Grant XL/Uniden Madison. Unfortunately, I cannot get it to work. I get squeal upon transmit. I've tried the 4.7k ohm resistor on the audio line solution, and this only...

Addendum Just a quick addendum - I replaced both large caps on the power supply PCB with larger values to help filter out the AC, but still get significant AC hum with the volume turned down audible through the speaker. I also soldered a 3 prong AC cord, with the ground to the terminal marked...

I have a TRC-440. It's a back up radio, but sounds good & is a good performer. I'm interested in making some minor modifications to this radio: 1.) Replace Squelch circuit with an RF Gain using the same Pot on the front of the radio. 2.) Upgrade Finals Attached is a schematic. I'm...

TRC-440 Here is the Schematic for the TRC-440. Anyone want to help me out? 73's...

I would greatly appreciate some guidance on making an RF Gain circuit for my back up radio, a Realistic TRC-440. I can email schematic, but would have to scan the document. Thanks!