Thread: 32-ohm earphone speaker as a dynamic microphone
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Old August 3rd 14, 10:12 AM posted to rec.radio.amateur.homebrew
Lostgallifreyan Lostgallifreyan is offline
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Default 32-ohm earphone speaker as a dynamic microphone
Stuart Longland wrote in news:kea1bb-
:

Looks like I might be getting out the oscilloscope and making some
measurements with the PTT down, try to figure out where the RF is
getting in.


Did my post earlier not help? If your equipment has a frame ground and a
signal ground, or perhaps an analog plus a digital ground, that might help.
Your CAT5 has no screen so far as I know, it's just 4 twisted pairs. But if
you handle the twisted pair as usual, referenced to signal ground, catch the
RF on the screen and send it to the other ground. if you already tried this,
what happened?
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