[Boatanchors] Carbon Mic Rejuvination

Ken ken at wa0sbu.com
Sat Mar 16 18:41:14 EDT 2013


Why not?


Jim wrote:
> I recall a telephone repairman WHACKING a handset on a desk to loosen 
> the carbon granules in the microphone.
>
> DON'T try this on a modern telephone!
>
> Jim
>
>
>> I read once that the old commercial broadcast stations used a type of 
>> oven that they would put their microphones in when not in use , to 
>> keep them dried out . I've heard of the good old banging them on the 
>> table too .
>>
>> I have a pair of T-17's I picked up years ago and every once in a 
>> while they are fun to use on a project .
>>
>> Charlie , W5COV
>>
>>> Heard a rumor about rejuvenating old carbon microphones with AC 
>>> published somewhere (ER maybe?).  Anybody know more?  My experience  
>>> with the old military mics (T17 & the like) is that they either 
>>> play  or they don't, banging on the table , etc., never worked for 
>>> me  anyway.  Damn things can surprise you though, just picked up a 
>>> pair  labeled "Microphone T-17 4857-CHI-42.  Rattiest looking units 
>>> I've  ever seen and both work great!
>>>
>>> Dennis D.  W7QHO
>>> Glendale, CA
>>>
>>>
>>>
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>
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