HM-102 Part needed

[Stu Lyon]

There was a bulletan on that subject several years ago that said, in 
effect that "under high power, high SWR condx" that trimmer would blow.

I bought a "none-working" HM-102 that had the very problem. I repaired 
it by replacing the trimmer with an equalivent to 
http://www.surplussales.com/Variables/Ceramic/CerCap4.html  (3-30 pf) 
which most everybody has in their junk box.. As I recall it was not easy 
to install since it is larger but has worked well since then.

73, Stu W6CUX

James Harrison wrote:

>Hi Group,
>
>I have added another HM-102 to my ham shack, and at arrival it did not
>seem to work right. I am mainly using them as simple watt meters, but
>it would only work in calibrate mode, and not show any wattage in
>normal mode.
>
>After close inspection it seems that part#31-57 2.7 - 20pf ceramic
>trimmer has been fried in the past.
>
>Does anyone have a spare part that they would be willing to part with
>for a reasonble price?
>
>Thanks James KG4PBI
>
>  
>

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