[ICOM] IC-756PRO

[Kelly Taylor]

Hi Gary,
Apparently, it's due to insufficient bypassing on the 8volt buss. An 
additional capacitor is said to be the cure.

73, kelly
ve4xt
----- Original Message ----- 
From: <gfiber at comcast.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Friday, September 22, 2006 2:38 PM
Subject: Re: [ICOM] IC-756PRO


>I suspect its the noise blanker clipping the signals causing a more of a 
>square wave. Square waves are richer in harmonic energies and will cause 
>symptoms like you describe. Probably the same thing happens on a strong 
>nearby SSB signal. Actually it seems to be a fairly common issue with some 
>noise blanker designs.
>
> Others here may have better explainiations and cures as I don't own a 
> 756PROII
> Just have an IC-718.
>
> Gary K8IZ
> -------------- Original message ----------------------
> From: <ve4xt at mts.net>
>> Hi all,
>>
>> I have an IC-756PRO (not II not III, just PRO) with what appears to be a
>> systemic issue: when the noise blanker is engaged in CW, strong nearby
>> signals thump the passband.
>>
>> It's as though the AGC was pumping in response. Is this something
>> others have noticed?
>>
>> Turning the NB off appears to cure the problem, but until I noticed that, 
>> I
>> was starting to have reservations about this radio for CW.
>>
>> Thoughts?
>>
>> 73, kelly
>> ve4xt
>> ----
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>
> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
>