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Old 18th May 2021, 9:51 am   #40
Julesomega
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Join Date: Dec 2012
Location: Stockport, Greater Manchester, UK.
Posts: 1,377
Default Re: HP 180A Oscilloscope.

Anyway, I came back here to mention that local friend G6OXW came round last week to borrow a plugin and extender board to use with his 182C mainframe which is a later version of the 180A because his baseline has been jumping up + down by a few dB

His original fault had been breakdown of the CRT heater winding on the mains tfmr which he resolved by hanging a modified toroidal tfmr on the back of the instrument. I haven't heard yet how he's progressing with the jumping (hint hint)
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