[Boatanchors] Measurements Corporation Model 80 Signal Generator
(Boonton, N.J.)
Morris Dillingham
mdilli at trip.net
Sun Jan 15 14:57:58 EST 2006
I just received one of these from a fellow boatanchor fan and was =
excited
that I might get it to work at refurbishing some of my old gear. Upon
opening it, however, I find that the output pad cable is mostly gone and
someone has tried unsuccessfully to solder it back together. The pad
control, a cylindrical arrangement, appears to be a critical part. The =
core
of this pad is to be pulled back and forth by the cable. The cable, =
broken
now, normally connects the front panel vernier/knob combination which is
labeled "pad" with the sliding core of the cylindrical device. There =
may be
more pieces which are missing or broken. (No manual available as yet) =
I am
guessing that this part is some kind of capacitor for loading or tuning =
the
output.
This is a beautifully made piece of gear with two large meters for =
showing
percent modulation and some kind of null indication. There is an =
ingenious
turret arrangement, shielded by a large round canister, which is used as =
a
band switch. It appears that this was once a very accurate signal
generating device and it would be a shame to part it out too quickly but =
I
am not sure as to how likely I can find a replacement part. I will hold =
on
to it in its present condition for a couple of ham fests just in case.
There are also about 10 electrolytics that will definitely need =
replacement,
some of which are 600 volt. I would expect that the usual practice of
series caps would not work well here to reduce the voltage requirements =
due
to the construction of the unit. Does anyone have an opinion on the
likelihood of a replacement "pad"?=20
73 de KI4IUA
Morris=20
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