[Heath] HM-2103 RF load help or thoughts

[Robert Groh]

Try changing the cap out with the one you have - yes, definitely worth a try

I have some ceramic trimmers but I think my 'low C' ones are 2 to 11 pF.  I'll spend some quality time in the basement looking this afternoon.

Bob Groh




________________________________
 From: Dave Edwards <kd2e at comcast.net>
To: Heath at puck.nether.net 
Sent: Friday, December 27, 2013 7:45 AM
Subject: [Heath] HM-2103 RF load help or thoughts
 


I have one of these dummy load/wattmeters. 
The wattmeter is WAY off as far as accuracy. 
I decided to go through the alignment.
What supposed to be a deep null in the balanced bridge 
circuit, when adjusting a ceramic trimmer cap...is just a slight
    null. 
Floating around in the cabinet, I found a half moon shaped oval
    piece of 
something. It seems to be a broken off piece of the wiper half of
    the 
trimmer cap!
So...putting two and two together, I suspect the trimmer cap!!!
    (Rocket Science!)
It is a 3 lead 2 - 18.5 pF ceramic trimmer. 
The closest I can find is 5 - 30 pF
As a group....before I spend the cash, and gut the thing....Do you 
think that is enough in the ballpark that it will work??
OR...

Anyone have a 2 -18.5 ceramic trimmer?
Heath PN 31-53   or    31-57

Thanks for spinning your wheels on this.

Happy Holidays!
Dave
KD2E

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