[Heath] HM-2103 RF load help or thoughts

[Kenneth G. Gordon]

On 27 Dec 2013 at 8:45, Dave Edwards wrote:

> 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??

Yes.

Kenneth G. Gordon W7EKB

"Courage is being scared to death but saddling up anyway."--- John   Wayne