Thanks, Joe. Though I don't have such time equipment, the pictures are
fascinating me and make me recall the days when the name "HP" stood for
High Precision (or High Price) rather than for cheap printers.
Those days are gone...
Volker
Am 13.01.2013 12:27, schrieb Dave Brown:
Thanks for these, Joe.
The photo with the sign 'set your watch' is especially interesting for
me as it shows a pair of old clock displays the same as one I have here.
These are the two digital displays that are showing the same digits.
There's part of a third one the same on the extreme left but the display
on that one is not visible in the photo. My clock has a different
mechanical dial on the ten turn pot at the extreme right of the front
panel- otherwise the unit I have here looks identical to those in the
photograph.
I have never been able to track down any info on this unit. Mine came
from a US military installation here in NZ (Black Birch) that has long
since been shut down. It's certainly old technology- RCA 'numitron'
displays and mostly TTL circuitry. I've had it running here continuously
now for about six years driven from an HP 5245M timebase - the clock has
never missed a beat. (recent quakes excepted ) Also. one of the
newspaper cuttings in that collection you posted mentions the flying
clock being down here in NZ to visit Mount John, a magnificent
observatory site in South Canterbury. These days it's a well known
astronomical observatory run as part of Canterbury University Physics
Department.
Dave Brown
Christchurch, NZ
----- Original Message ----- From: "Joseph Gray" <[email protected]>
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Sent: Sunday, January 13, 2013 10:10 PM
Subject: [time-nuts] 1970's flashback
Some time ago, a local Amateur gave me a CD with some radio related
information. Also on the CD was some information from when he was in
the Air Force. As it is Time Nuts related, some of you might find this
of interest. I have posted the images in my Dropbox and will leave
them there for a few days before removing them. Several images are
large.
https://www.dropbox.com/sh/ri8md891qne99vn/fuSDWspqWD
Joe Gray
W5JG
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