[Heath] HM-102 Wattmeter meter needle 'stickiness'
John Klingelhoeffer
wb4lnm at aol.com
Thu Jan 16 14:51:58 EST 2014
I have an HM-102 wattmeter that was given to me 7-8 years ago. I wasn't the builder.
While it appears to be in pretty good shape, the meter needle seems to be a bit 'sticky' and does not seem to move smoothly when sensing RF. The needle itself seems to be a safe distance away from both the inside of the meter clear cover and the meter face.
I'm guessing this is a mechanical problem and not an electrical one. Is this a known symptom of the meters used in HM-102's, and if so, is there a 'fix'? Is there a way to easily remove the clear face cover to check the clearance of the needle on the face without damaging the meter movement?
73
John...
WB4LNM
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