[MRCA] T-17

[ac2eu at yahoo.com]

 Yes, you wouldn't know it had any mod at all , except that it would produce strong clean modulation.
I used to have a 1 inch square pcb that fit into most T-17 designs, but I sold out of them..I've modified and simplified the design since then, so I'd have to re-design the pcb. anyway.It's not a big demand item, so I make them on a proto board as needed for restorations.
    On Thursday, April 30, 2026 at 10:12:44 PM EDT, Jason WA6BBQ <w6iee.73 at gmail.com> wrote:  
 
 Of the finished product? It’ll just look like a normal T-17!
On Thu, Apr 30, 2026 at 19:07 B. Smith via MRCA <mrca at mailman.qth.net> wrote:

  
 Perhaps you could take a photo and copy the diagrams- I could post it to my web page with due credit of course.
 73 k4che
 
 http://k4che.com/T-17/T-17.htm
 
 
 On 4/29/2026 8:46 PM, ac2eu at yahoo.com wrote:
  
  There also more "electronic" mods using an electret microphone. I made a stable two transistor self biasing carbon mic replacement and also a less stable but very  simple single transistor type. They both will produce clearer modulation than a NEW T-17 ever did . Carbon has very poor frequency response and they justt get worse over time. 
      On Wednesday, April 29, 2026 at 08:06:21 PM EDT, B. Smith via MRCA <mrca at mailman.qth.net> wrote:  
  
     The Air Show and Military Rally season has started. Perhaps it is time to consider an overhaul or repair of your T-17. There are several mods for more consistent output unless you enjoy banging the T-17 on the side of the table. That black taped telephone button repair is kind of tacky.
 Z
 
 http://k4che.com/T-17/T-17.htm
 
 
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