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astatic 575 m6 + uniden grant xl
- Thread starter surf579
- Start date
The Grant XL and the Cobra 148 GTL use the same mic wiring - provided we are talking about the 5 pin mic radio.
Astatic (6 wire mic)
1- White
2- Shield
3- Black
4- Blue
5- Red
Yellow / No Connection
Cobra 148GTL
Astatic (6 wire mic)
1- White
2- Shield
3- Black
4- Blue
5- Red
Yellow / No Connection
Cobra 148GTL
Yeah that's it. From TOM'S WIRING GUIDE, Uniden section:
Ted
Code:
PRESIDENT RADIOS
Models: Washington, Grant XL, Madison
microphone wiring code
Standard 1-Audio,2-Shield,3-Receive, 4- Switching, 5-Transmit
Astatic 1-White,2-Shield,3-Black, 4-Blue, 5-Red
Sadelta 1-White,2-NC, 3-Green, 4-Shield, 5-Brown
Turner 1-White,2-Shield,3-Black, 4-Red, 5-BlueTed
It is going to be tough to run that mic with a Grant XL without squealing problems.
That happens with all Grant XLs and side mic 148s....these heavy audio radios are better off with a good quality stock mic.
My daily talker is a Grant LT and after doing multiple mods on XL's and LT's over the years I found a great combo is to add a TRB-X2 inside the radio and a Ranger SRA-158. I turn up the gain on the audio amp board on the TRB-X2 to max and then run the radio mic gain at 9 o'clock. End results is very clean, loud audio. Had nothing but good reports when I set it up like that. Still one of my favorite radios 
I just recently added a UTB to my daily talker as well. Fun stuff.
I just recently added a UTB to my daily talker as well. Fun stuff.My daily talker is a Grant LT and after doing multiple mods on XL's and LT's over the years I found a great combo is to add a TRB-X2 inside the radio and a Ranger SRA-158. I turn up the gain on the audio amp board on the TRB-X2 to max and then run the radio mic gain at 9 o'clock. End results is very clean, loud audio. Had nothing but good reports when I set it up like that. Still one of my favorite radios
i do same with my dm452 echeo mic i turn iut to max then set mic gain
at/between 9 and 11 oclock.i think running mic gain wide open
with a power mic isnt good. just my opinion