Dittel Radio Squelch Adjustment
Jim Husain
group can solve.
Mike works, speaker works. Turn radio on to squelch and there is still noise.
Momentarily press PTT and the squelch activates. As soon as someone else
transmits, I hear the transmission, but then the squelch does not reengage.
Only way to reengage is to press PTT again.
Is there an internal adjustment for squelch sensitivity? If so, where? Or, is
the radio broken?
Thanks in advance.
Jim
N483SZ
gap...@aol.com
Karl Giesen
yes there is an internal squelch adjust!
But: it´s not adjustable from the outside. You have to open the
radio and carefully adjust the right potentiometer! If you are not
familiar with such electronic equipment I would not advice you to do it
yourself but ask a repair shop.
I could fax you some info from Dittel how to do the adjustment if you like (I had the same problem!)
regards Charly (JT)
Sula
>I have a Dittel FSG-50 radio... Is there an internal
>adjustment for squelch sensitivity? If so, where? Or, is
>the radio broken?
The radio isn't broken - this is a common problem. It happened on my old
FSG-50, and I found the fix. But that radio is long since sold, so you'll
have to wait for another poster to give you the details.
In general, you remove the top (or is it the bottom?) aluminum cover and
find several trimpots, one of which controls squelch (yes, it should be far
more accessible than it is). You turn it with a small screwdriver to change
the squelch level. I drilled a hole in the cover and pasted a label next to
the hole so future adjustments would be easy.
Mike Borgelt
>I have a Dittel FSG-50 radio and am experiencing a problem that I'm sure this
>group can solve.
>
>Mike works, speaker works. Turn radio on to squelch and there is still noise.
>Momentarily press PTT and the squelch activates. As soon as someone else
>transmits, I hear the transmission, but then the squelch does not reengage.
>Only way to reengage is to press PTT again.
>
>Is there an internal adjustment for squelch sensitivity? If so, where? Or, is
>the radio broken?
>
>Thanks in advance.
>Jim
>N483SZ
>gap...@aol.com
I had the same problem with the FSG71M. There is an internal squelch
adjust in that radio, which I found. A little trial and error got me
the right way to turn the trimpot. It seems the threshold may drift
with age.
Mike Borgelt
Jim Husain
>>I have a Dittel FSG-50 radio and am experiencing a problem that I'm sure
>this
>>group can solve.
Thanks for all your comments and advice. I traced down the circuitry and found
the right potentiometer. Works fine now.
Jim
N483SZ
gap...@aol.com
Peter Nyffeler
>I have a Dittel FSG-50 radio and am experiencing a problem that I'm sure this
>group can solve.
>
>Momentarily press PTT and the squelch activates. As soon as someone else
>transmits, I hear the transmission, but then the squelch does not reengage.
>Only way to reengage is to press PTT again.
>
>Is there an internal adjustment for squelch sensitivity? If so, where? Or, is
>the radio broken?
How to adjust the squelch level should be writen in the manual. If not send
Dittel an e-mail <mailto:fi...@dittel.com> to ask for the position of the
squelch adjust pot. and the RF input level (normaly 1 to 1.5 uV).
If the squelch is remains reengaged in your glider for a setting more than 2uV
then you may have a RF noise source in it (e.g. a Accunav GPS) and you should
put an additional shielding around the source..
BTW Walter Dittel's URL is <http://www.dittel.de>
----------------------------------------------------------------
PETER NYFFELER, ETH-Zuerich, Physical-Chemistry
mailto:nyff...@phys.chem.ethz.ch, <http://www.chem.ethz.ch/~peny >
To my hobbies: Soaring <http://www.chem.ethz.ch/~peny/sf>
and Control-Line Aeromodells <http://www.chem.ethz.ch/~peny/CL>