nuckolls.bob(at)aeroelect
Guest
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 Posted: Thu Apr 03, 2014 11:55 am Post subject: Icom A210 Low Headset Feedback once engine starts |
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At 04:41 AM 4/3/2014, you wrote:
| Quote: |
Hello,
I installed the Icom A210 into my Rebel and it tests out fine on all
parameters...except when the engine starts! The RX volume is too
low to hear regardless of how high I set the Headset volume or play
with the squelch. I have tried various headsets to eliminate that
the problem lies with my ANR headsets. I have gone back through and
tested all wires and proofed that the magnetos are properly
ground. From the very low volume I can ascertain no noise/hash so I
don't think the issue is suppressors or other interference.
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Let's make sure I understand. While operating battery
only, engine off, volume is normal . . . in fact, you
can turn it up so far that it's uncomfortably loud?
| Quote: | My system does not have a noise suppressor on the alternator, but as
I said, I'm not hearing any interference.
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Did you try operating the radio with engine running
but with alternator turned off?
| Quote: | I suspect that the radio is picking up on the cabin noise and
canceling out the sound - no idea.
Any suggestions greatly appreciated.
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That radio doesn't have anything you might
call a 'smart audio system'. Try listening
with the headset microphone unplugged . . . i.e.
headphones only to see if that makes a difference.
Except for received signal volume, does the "squelch
test function" seem to work? In other words, opening
the squelch under any engine operating condition produce
the normal 'dead air' hiss from the receiver? . . .
and it simply becomes lower volume after the engine
is running?
Bob . . .
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