[GreenKeys] Yet another old vacuum tube TU

[Ralph Irish]

A few years ago I picked up an ELECTROCOM FSC-250 TU at an estate sale.  It seemed complete,
with the two plug-in channel filters.  I've not been inside to see what it looks like, but
from the looks of the outside, it may be in very good condition.

The FSC-250 is a 2U 19" Rack Mount device with a 2" scope tube in the center.  It has a normal
amount of controls on the front panel, I'd guess.  (4)

If anyone on GreenKeys has a manual or if there is one 'archived' somewhere, I'd appreciate
a steer toward it.  I've not yet powered up the TU and won't until I have a manual or at
least a schematic.  I will 'condition' the caps with a VARIAC for a few days, increasing the
voltage up to the 115 range.

The family of the gent who passed away disposed of 'a lot of paperwork' before they called
in a few ham friends to sell off the ham gear.  We feared that many manuals disappeared into
a landfill somewhere before the hams were called in.

I also picked up an ELMAC CD-10 transceiver at that sale.  The CD-10 had been converted by
someone to use a pair of 'switching transistors' in place of the original vibrator circuit.
(Or, was this a later factory improvement?)

Again, a manual would be helpful.

For now,

Ralph - W8ROI


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