AeroElectric-List Digest Archive

Thu 04/03/14


Total Messages Posted: 2



Today's Message Index:
----------------------
 
     1. 03:08 AM - Icom A210 Low Headset Feedback once engine starts (Nik)
     2. 12:55 PM - Re: Icom A210 Low Headset Feedback once engine starts (Robert L. Nuckolls, III)
 
 
 


Message 1


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    Time: 03:08:17 AM PST US
    Subject: Icom A210 Low Headset Feedback once engine starts
    From: "Nik" <nikpotter@web.de>
    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. My system does not have a noise suppressor on the alternator, but as I said, I'm not hearing any interference. I suspect that the radio is picking up on the cabin noise and canceling out the sound - no idea. Any suggestions greatly appreciated. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=421526#421526


    Message 2


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    Time: 12:55:09 PM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Icom A210 Low Headset Feedback once engine starts
    At 04:41 AM 4/3/2014, you wrote: > >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. 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? >My system does not have a noise suppressor on the alternator, but as >I said, I'm not hearing any interference. Did you try operating the radio with engine running but with alternator turned off? >I suspect that the radio is picking up on the cabin noise and >canceling out the sound - no idea. >Any suggestions greatly appreciated. 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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