What a delightful little find at St. Vincent DePaul thrift store!
I wasn't at the St. Vincent store to BUY anything.... I was there dropping junk off.
But out of the corner of my eye, while the XYL was telling the loaders what to take out
of the SUV, I spotted this little box - 4" x 4" in the front by about 6" long... looked
like a vernier dial on the front - sitting on a pile of junk metal that would soon be picked
up for recycle. So I grabbed it and asked the yard guy for a "buy ticket" (Our St. Vincent
DePaul store has an outside yard - the yard guys price things on the spot and you go inside
and pay - otherwise, most yard stuff goes to recycling or the dump). He hemmed and hawed
for whatever reason and finally said "four bucks"... fine. Sold.
I assumed it was an audio generator or maybe a VFO - only has an RCA jack on the back,
and a power connector - labeled 12v AC or DC for filaments, 200v for B+ - AHA!! It must
have a tube in it! Nice National vernier dial on the front, with 2 POTs, a toggle switch (on/off?),
and a green power bezel. Yep - gotta be 1 or 2 tube signal generator or some such.
My plan had been to be use the vernier for a VFO or regen project... not much more than that.
Tonight I finally got around to opening it up... HOLY CRAP!! It's BEAUTIFUL! SIX TUBES!!!
In a box 4" x 4" by 6"!!! It's so well built that there are no screws to hold the chassis in the
case - it slides in - PRECISELY - not the other way 'round, but the way it was meant... and fits
like a glove. Amazing construction.
Underneath the chassis is as tight construction as you'd see in any professional radio of the
50's/early 60's - amazingly well engineered, considering this is a "one off" made by an Amateur.
So what is it? A VHF receiver covering 105 to 135 MHz - aircraft band. And it's a superhet - with
TWO IF stages... antenna in on the RCA jack on the back, audio out via the 1/8" headphone jack
on the front, top left.
I'm in the middle of a major shop overhaul, but as soon as the bench is cleared off and I work through
some other "fixit priorities" I'll power this little beauty up and see what she does.
Needless to say, I WON'T be converting it to a VFO - it'll just sit in my shack - and if it in fact works,
and is stable, will monitor AM aircraft signals from the Tacoma Narrows and Seatac Airports near me.
My site: www.W7UUU.net - it's not all about yew, you ewe!