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Xjeepguy
New member
Username: Xjeepguy

Post Number: 1
Registered: 12-2018
Posted on Friday, November 13, 2020 - 1:46 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Anyone here familiar with the 878 ( AST878DM ) ? I got one from a friend , its almost brand new and is wired correctly for 5 pin Washington / Cobra etc... When I plug it into my 5 pin Uniden Washington , and key the mic , it squeals like a oinker . I took the cover off and looked at the base and see the wires going up to the element , a red and a black and a shield ! A little different then my 1104c !
Red and black go on the element of course but I see the shield is cut off before the element . I know there's plenty of these mics working on Cobra's etc... Whats missing ? different about this wiring , are you guys using the shielding up top ? Thanks for any tips / leads , much appreciated !

9AT427 Jeff
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Lou
Junior Member
Username: Lou

Post Number: 32
Registered: 7-2017
Posted on Monday, January 18, 2021 - 1:22 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I dont no if this is of any help. The book i have is showing #1 SH #2WH #3RED #4BK YEL N/C.

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