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gordona23(at)earthlink.ne
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 Posted: Sat Apr 18, 2009 10:29 am Post subject: sidetone |
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Can anyone on the list give me a clear description of sidetone ? I''m
not sure if the sidetone I hear (most of the time) in my headset is
generated by the intercom or the comm radio. I've got intermittent loss
of sidetone and it certainly changes when I'm transmitting. My wife also
tells me that my voice is sometimes unintelligible in her headset
although ATC can hear me. The setup is a Lightspeed 20-3G headset,
talking through an Sigtronics SPA-400 intercom, and an ancient Narco
CP-125 audio panel, to a pair of Michel MX-ll radios.
Any insight and or clues would be appreciated.
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Vince Palermo
Joined: 18 Aug 2007
Posts: 13
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| Posted: Sat Apr 18, 2009 11:06 am Post subject: sidetone |
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Side tone is hearing your own voice in the head set when you speak
into the mic, albeit at a lower level.
Vincent Palermo
vpalermo(at)tampabay.rr.com
On Apr 18, 2009, at 2:27 PM, Gordon Arbeitman wrote:
| Quote: |
>
Can anyone on the list give me a clear description of sidetone ?
I''m not sure if the sidetone I hear (most of the time) in my
headset is generated by the intercom or the comm radio. I've got
intermittent loss of sidetone and it certainly changes when I'm
transmitting. My wife also tells me that my voice is sometimes
unintelligible in her headset although ATC can hear me. The setup
is a Lightspeed 20-3G headset, talking through an Sigtronics SPA-400
intercom, and an ancient Narco CP-125 audio panel, to a pair of
Michel MX-ll radios.
Any insight and or clues would be appreciated.
|
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Vincent J. Palermo |
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douglist(at)macnauchtan.c
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| Posted: Sat Apr 18, 2009 12:37 pm Post subject: sidetone |
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At 14:27 -0400 4/18/09, Gordon Arbeitman wrote:
| Quote: | Can anyone on the list give me a clear description of sidetone ?
I''m not sure if the sidetone I hear (most of the time) in my
headset is generated by the intercom or the comm radio. I've got
intermittent loss of sidetone and it certainly changes when I'm
transmitting. My wife also tells me that my voice is sometimes
unintelligible in her headset although ATC can hear me. The setup
is a Lightspeed 20-3G headset, talking through an Sigtronics SPA-400
intercom, and an ancient Narco CP-125 audio panel, to a pair of
Michel MX-ll radios.
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My recollection of the Sigtronics is that they just allow the audio
from a comm radio to be mixed in wiring with the intercom audio. No
switching is provided "because I sleep better that way".
You should be able to use the transmitter for a test with the
intercom turned off. That way you would be absolutely sure any
sidetone is coming fro the transmitter.
If that doesn't work you should also be able to connect the mike to a
"standard" mike jack and the phones to a "standard" phone jack but
you might need a mike with a push-to-talk switch on it. You can make
a PTT by grounding the tip of the mike connector. That's the tip of
"ring, tip, and sleeve of the three terminal connector.
The CP125 does not generate any sidetone by itself. The Sigtronics
drives the headphones but, although it's quite the same, it's not
called sidetone.
The war department's problem with distortion could well be the
presence of audio from the Sigtronics being mixed out of phase with
sidetone from the transmitter.
--
--> A fair tax is one that you pay but I don't <--
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Sat Apr 18, 2009 3:12 pm Post subject: sidetone |
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First of all side tone is only in your own head set. It takes The same
signal that is fed to your transmitter or audio panel but sends it back to
your own headset so you can tell how loud you are speaking and if you are
intelligible.
Noel
--
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Noel Loveys
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