[Milsurplus] T-17 Rebuild

[B. Smith]

        Several have asked about replacing the carbon microphone 
element  in the T-17. I usually use a standard telephone button and trim 
it to fit inside the T-17 housing by removing the outer frame. The 
button then fits inside the T-17 housing and the outer cover with the 
small center holes can be fitted. (Drill additional center holes if 
necessary to improve voice response) Other have taken a T-17 housing and 
machined the interior  to  enlarge it to accommodate the larger button 
but removing the outer frame  with a small file is faster and easier.  
There is no compassion between the audio output level between the 
original T-17 cartridge which has aged and the telephone button, the 
button  is loud and very crisp. See attached photo.
          Info on the T-17 including the button mod,capacitor info, 
rewiring etc can be found at  the link below. In addition there is a 
chart supplied by WA5CAB on the different  contract dates and 
manufacturers  of which  I've added a couple of entries. I will add 
additional info to the chart if I receive the information.
k4che
http://k4che.com/T-17/T-17.htm

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