It's side tone level to be reduced,
Jos
Paul McAllister <paul.mcallister@qia.net> kirjoitti Sun, 13 Jun 2004
> <paul.mcallister@qia.net>
>
> Hi Fred,
>
> To answer your question my set up has a push to talk for transmitting.
> If
> your theory is correct I should be able to improve the situation by
> reducing
> the microphone gain. The GX60's internal intercom has the following
> parameters that can be set:
>
> - RF Level
> - Headphone level
> - Side tone level
> - Intercom level
> - Intercom squelch
> - Noise level
>
> I was hoping to set one that said "Microphone gain", but alas no. I will
> dig
> out the manual tonight and see if any of the above settings might help.
>
> Cheers, Paul
>
>
> ----- Original Message -----
> From: "Fergus Kyle" <VE3LVO@rac.ca>
> To: <europa-list@matronics.com>
> Subject: Re: Europa-List: Feedback problem with the radio
>
>
>>
>> Paul,
>> It can sometimes be transmitted through tight clamping of
> units
>> in the system, but this does not sound like that symptom. If your
>> headset
>> earcups 'leak' then the acoustic feedback would be the cause. Tight
> earcups
>> tend to reduce that.
>> Is your system operated as 'VOX' - voice-operated
> transmission?
>> That is, do you have the sound of your voice open the transmitter, or do
> you
>> press a transmitt button? If the former, the sound from nearby will
> trigger
>> the transmitter open as well as the intercom. VOX is operated by two
>> datum
>> voltages - a large one which triggers the transmission and a smaller one
>> below which the transmitter shuts off. Both of these voltages is set by
>> a
>> pair of potentiometers usually somewhere moderately available to the
>> avionics bod who installs/repairs same. The same may apply to the
>> intercom
>> unit.
>> We'll keep an eye open for your solution when it comes.
>> Cheers, Ferg
>> ----- Original Message -----
>> From: "Paul McAllister" <paul.mcallister@qia.net>
>> To: <europa-list@matronics.com>
>> Subject: Europa-List: Feedback problem with the radio
>>
>>
>> <paul.mcallister@qia.net>
>> |
>> | Hi All,
>> |
>> |
>> | I have an odd problem with my GX60 when trying to transmit. I found
>> it
>> would start oscillating, it would start with an echo and then break
>> into
>> full audio feedback, similar to as what a PA system does when the
> microphone
>> is too close to the speaker. I fooled with the problem for the longest
> time
>> and I finally narrowed it down to my LightSpeed headsets. I called
>> LightSpeed and sure enough they knew about the problem. They invited me
>> to
>> send the headsets back and they would fit a new shielded battery box.
> They
>> came back and they "sorta" worked, but unfortunately they would still do
> it.
>> |
>> | A this point I resigned myself to using my Telex 3500's. These always
>> seemed to work, but today they started to exhibit the same problem...
>> now
> I
>> am in a bit of a quandary on how to trouble shoot this problem. I do
>> not
>> have an audio panel at this time, I am using the internal intercom in
>> the
>> GX60.
>> |
>> | Does anyone have any ideas where to head with this.
>> |
>> | Paul
>> |
>> |
>> |
>> |
>> |
>> |
>> |
>>
>>
>
>
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