Use a sinadder on the receiver when you set the frequency. Then swing the
signal generator from side to side to see if the IF is symmetrical. That way
you know that the frequency is set right to center the carrier in the
receiver pass band properly

 

73

Gary  K4FMX

 

  _____  

From: [email protected]
[mailto:[EMAIL PROTECTED] On Behalf Of Don KA9QJG
Sent: Saturday, January 27, 2007 2:02 AM
To: [email protected]
Subject: RE: [Repeater-Builder] Re: Audio Distorted

 

Thanks I gave that some Thoughts before I posted and someone Please correct
me if I am wrong.


The first thing that comes to mind is receiver drifting off frequency.
Try having someone come in at +1 or -1 kHz, and see if they sound 
better.

---------------Would that also not be on Stronger Signals? -----------

If the TX was off, I'd expect your receiver AFC to follow it up to a 
point. But that would be worth checking too.

-------------Right on  Freq with Counter and Disc Meter -----------------

COULD be an electrolytic in the audio path that isn't much of a cap 
when it gets cold.

----------------Again would that not be noticed on Strong Signals?--------

 

I did pay a lot for the $50.00 Each Crystals From International. 

 

I do recall yrs ago having a Micor in the trunk in the Cold Winters around
N/W Indiana it sounded off Freq,  but  after a Few Min of Transmitting  it
Warmed up and sounded Great and Again I am talking about the receive , I
think I will temporally put a 100Watt light in the 4 ft cabinet and see if I
still have the Problem 

Thanks Don KA9QJG  

 

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