HW-101 Bias Levels?

Joe Hutchens Wj5mh at AOL.COM
Sat May 7 11:51:48 EDT 2005


Additional:  I did a little more checking last night, and power out is  
almost 25 watts higher on CW when compared with Tune.  The CW level  control, which 
controls the ALC, is essentially the same in the two modes, so it  appears 
that my problem is further upstream.  The signal is on the same  frequency, so 
it's not an issue with the bandpass of the crystal filter.   The switch 
contacts that unbalance the modulator, supposedly are the same  for Tune and CW.
 
This will be a good one to troubleshoot.
 
Thanks,
Joe
 
 
>
In a message dated 5/6/2005 8:07:59 PM Central Standard Time, Wj5mh at AOL.COM  
writes:
it normal for the bias level to change  between USB/LSB, CW and  Tune?  
I've looked at the schematic, but can't see  how, so I  don't think this is 
normal.

CW reads highest.  Tune reads  the  lowest.  USB and LSB read the same and 
adjusted to the bias mark on  the  meter.

Thanks,
Joe  
 

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