[Heathkit] HM-2140 Peak-reading watt meter.

[Kenneth G. Gordon]

I bought one of the subject meters off that place. It works 
OK, although I have a couple of small "issues" with it, and 
am hoping the collective wisdom might have some 
experience along these lines.

1) The switches and pots are intermittant, despite using a 
SMALL bit of DeOxit on everything I could reach. I am 
thinking that I may have to replace all of the double-throw-
many-pole push-button switches.

Might anyone know of a source OTHER THAN Mouser?

2) The calibration is off quite a bit, it appears. For instance, 
it tells me that my HW-101 is putting OUT 150 watts in 
TUNE on 80 meter, and I know that is impossible. It also is 
telling me that my SB-200/HW-101 combo's output is 1500 
watts in TUNE, and that is CLEARLY impossible, since if 
the meter circuits in the SB-200 are even remotedly correct, 
I am getting about 1150 watts INPUT with new tubes, 
momentarily. 

I have gone through the calibration procedure as outlined in 
the manual for the HM-2140, and, aside from "sensitive" 
pots, I got the proper results.

Since the percent error is very similar on low and high 
power both, it must be something ahead of that particular 
part of the circuit.

So, before I start digging into this thing, would anyone have 
any ideas, or experience with it?

It sounds to me as though some resistors have gone way up 
in value...

Ken Gordon W7EKB