[Heathkit] HW-100/101 het osc output

[Kim Herron]

Hi Dick!!
 
    In addition to what Glen and Ed said, you should also check your Het/Osc plate resistors.  They also go way out of tolerance, usually high which makes the osc output drop way off.  I forget the value, but they should be replaced with 1 watt resistors as well.  These things don't go bad at the same time and so you can have great output on LSB and low on USB or visa versa.  It also effects your receive sensitivity.  

Kim Herron W8ZV
kim.herron at sbcglobal.net
1-616-677-3706




On Wed, 25 Nov 2009 14:56:10 -0500 "Dick KF4NS" <kf4nsradio at verizon.net>
writes:
> My HW100 is giving me some fits with the alignment for the first time 
> 
> in the 39 years I have used it. Usually all goes just as smooth as 
> baby's rear. First thing I noticed is that I cannot dip the plate on 
> 
> 80M, close but not a dip.I decided to just start over.
> 
> The het osc setting is first of course. I am curious why the 
> Heathkit 
> specs state that it is supposed to be set between -0.5VDC and 
> -2.0VDC. 
> I can easily set mine between 0 and -7.4V. Why such a wide range? 
> What 
> if it is set for more than -2V?
> 
> The actual problem is low power output on all bands and after a full 
> 
> alignment and neutralizing the finals with a scope, I went back to 
> square one as mentioned above. Any ideas come to mind other than 
> swapping the finals? Guess maybe I should compare cathode and plate 
> 
> current but that is a pain to do.