Jay in the Mojave wrote:
The Smart Squelch is supposed to be able to discern between
noises and a real RF signal.

This is the key. I would certainly like to know how this is
accomplished. Seems to me this would be a complicated problem.

www.telstar-electronics.com

Hello TE:

Yes agreed. I don't have a clue. But somehow its supposed to be able to
see the difference. And it can't be perfect, as everyone voice is
different, and there has to be a Gazillion types of noises out there!

My computer power supply had to engineered to generate noises and trash
in the RF Spectrum. I shielded it, added in filters, grounded the
computer like a radio, all helped but was not the cure. A year ago the
computer power supply died. The Computer Tech Dude said it was the wrong
kind, too small. OH Good!. Now with a modern larger power supply, only
the hand held will pick up noises when near the computer, not out in the
street. I could always tell when the kid was on the computer from the
radio picking up noise from the driveway.

Jay in the Mojave

Telstar Electronics wrote:

Jay in the Mojave wrote:

The Smart Squelch is supposed to be able to discern between
noises and a real RF signal.


This is the key. I would certainly like to know how this is
accomplished. Seems to me this would be a complicated problem.

www.telstar-electronics.com

"Jay in the Mojave" wrote in message
...
Hello TE:

Yes agreed. I don't have a clue. But somehow its supposed to be able to
see the difference. And it can't be perfect, as everyone voice is
different, and there has to be a Gazillion types of noises out there!

My computer power supply had to engineered to generate noises and trash in
the RF Spectrum. I shielded it, added in filters, grounded the computer
like a radio, all helped but was not the cure. A year ago the computer
power supply died. The Computer Tech Dude said it was the wrong kind, too
small. OH Good!. Now with a modern larger power supply, only the hand held
will pick up noises when near the computer, not out in the street. I could
always tell when the kid was on the computer from the radio picking up
noise from the driveway.

Jay in the Mojave

Telstar Electronics wrote:

Jay in the Mojave wrote:

The Smart Squelch is supposed to be able to discern between
noises and a real RF signal.


This is the key. I would certainly like to know how this is
accomplished. Seems to me this would be a complicated problem.

www.telstar-electronics.com


I had the same problem using a computer power supply. I t really quietened
off after putting some small caps across the rectifiers.
You have to remember there are 2 sets of rectifiers. One changes the 120 or
240 vac to 300volts dc or so, this is sent to a switcher where it is turned
into AC again then rectified again. I think the caps were .001 for the 60hz
part and and .0001 for the switched part. These values are a guess as it has
been a while since I did this. I dont think the newer ones have this
problem.

I also saw where it is possible to rewire computer power supplies so you can
get something on the order of 50 volts at 10 amps. The one I saw took
rewiring the transformer with a new secondary and maintaing the 5 volt
winding for regulation. I want to get back to this, sounds like it would
make a good power supply for a FET amp.