[R-390] GR 1001-A Signal Generator retry with details
Bill Hawkins
bill at iaxs.net
Thu Jan 19 13:36:02 EST 2012
Not many replies to the sketchy note I sent last week. Maybe if I
added some details I could send this classy GR instrument to a new
home. It can't stay here.
So I took it out, brought it up on a Variac, and monitored the B+.
No problems and no smoke, all functions working. Put it back in the box
and tested the dial extremes, all ranges are within the +/- 1% spec.
The 15 to 50 MHz range has trouble at the low end, but is usable above
17 MHz. No other ranges fall off like that. 18 MHz (a dial mark) reads
17.9 MHz on the counter, and 50 MHz reads 49.5.
Not sure the Racal-Dana 1992 counter is rated for 50 MHz, but
there are six zeroes after the leading 1 for 10 MHz from an HP Z3801
GPS receiver.
Burned it in for 2 hours, mostly within the 0.25% drift spec. It comes
with a manual with schematic and alignment instructions. The alignment
tool is still clipped inside the case. I don't have an RF voltmeter, so
I can't comment on output voltage accuracy.
FWIW, power consumption at 115 VAC line is the rated 65 watts.
There are no obvious scratches on the case or front panel, but there
is light corrosion of the nickel plating. It should have its face
washed, but I'd rather the new owner did that. It looks and smells
brand new inside the case. Pictures on request.
I'm asking $120 for it, but I'm influenced by a good story about why
you want it. Money isn't everything.
The generator itself is 21 wide, 14 high, 11 inches deep, and weighs
54 pounds. I'd be shipping from zip 55438 in Bloomington, Minnesota.
Bill Hawkins
952-835-6840
Former owner of an R389, 90, 90-A, 91 and 92. Still have some manuals.
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