[ARC5] More on Bashless T-17 Microphone Resurrection

[Richard Knoppow]

    I would sure like to know the source of this.  I frankly doubt if WE 
ever bothered to rejuvenate carbon telephone transmitters since they 
would be replaced with new ones. In particular the T-1, used in the 500 
series telephones, has a plastic diaphragm that seals the insides 
specifically to avoid moisture damage. An element which has been 
moisture damaged would indicate it had mechanical problems.
    Very old carbon mics, as used in very early broadcasting and PA 
applications, could be helped along by baking.
    There is nothing to be lost in trying this procedure, its just that 
I have doubts if it will work and I am very skeptical that it came from 
Western Electric.
     Bell System practice would have been to replace the entire telephone.

On 6/1/2016 9:46 AM, Jim Haynes wrote:
>
> Attached is a Western Electric procedure for trying to rejuvenate carbon
> transmitters.  You might try the procedure.
>
> Jim W6JVE
>
>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL