|[AMRadio] Xtal mike|
w5omr at w5omr.shacknet.nu
Tue Mar 15 05:44:53 EST 2005
John Coleman wrote:
> This is correct, and a lot of the "pre-amped" microphones or very
>good and some or not. I used an old dynamic microphone case and pulled the
>guts out of it. It had been in a flood. Then built a preamplifier and
>condenser microphone on a small PC board and installed it in the old
>microphone case. I actually used two condenser microphone cartridges from
>Radio Shack. I don't remember the number but they were about dime size
>round and thick. I think I used three transistors but I don't remember the
>circuit as that was several years ago. My wife, Vickie, helped dye the new
>spit cloth and glued it in.
>See the picture at
>The LEDs were a small optical add-on.
Ladies and Gentleman, please excuse my friend John.. he's always been a
Here -are- a collection of pictures of his shack and operating position,
as it was in the
summer of 2002...
73 = Best Regards,
(/m5 New Orleans, LA)
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