Hi John:
Like this:
dymec logo is "hp" turned upside down
--
Have Fun,
Brooke Clarke, N6GCE
https://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
axioms:
1. The extent to which you can fix or improve something will be limited by how
well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.
-------- Original Message --------
Let's not forget dymec.For the younger crowd, write 'dymec' on a piece of paper
and then look at it upside down, just the first two letters.John K0GCJ
---------- Original Message ----------
From: Bob via time-nuts <[email protected]>
To: [email protected]
Cc: [email protected]
Subject: Re: [time-nuts] HP Stories: Frequency Counter business
Date: Tue, 22 Jan 2019 04:49:31 +0000 (UTC)
Hi
I still have a 524 with a 500 MHz plugin sitting in one of my sheds. I used to
keep a fairly large house fan aimed at the critter to keep it from tripping its
Klixon thermal overload switch. Ahhhh they were the days indeed.
Bob KE6F
-----Original Message-----
From: Dave Mallery <[email protected]>
To: Discussion of precise time and frequency measurement
<[email protected]>
Sent: Mon, Jan 21, 2019 8:02 pm
Subject: Re: [time-nuts] HP Stories: Frequency Counter business
in high school, i had a summer job at the NYU EE dept up in the Bronx
campus (where my dad taught english!)
this was the summer of 1956 and 57. in the lab equipment issuing room
there lived a 524 with the vertical neon lites.
along with a plethora of other now ancient equipment.
long ago in a galaxy far away...
73
dave mallery
On Mon, Jan 21, 2019 at 5:04 PM Don <[email protected]> wrote:
http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1951-01.pdf
On Mon, 2019-01-21 at 14:15 -0500, Gordon Batey wrote:
Greetings to all,
I believe that was the HP 525 counter. I had one as my first
counter
which I picked up surplus many years ago. It had several plug-ins
for
different
frequency ranges. Kept the basement warm in the winter time. The
vhf
plugin was a heterodyne mixer as I recall. This unit ontained MANY
tubes
and a
fairly large fan to remove the heat. I gave it to another ham
several years
ago.
I really enjoy the HP stories.
Gordon Batey
WA4FJC
Hi,
I used an HP counter in 1961 that had these vertical strings of neon
tubes
behind numbers, and the two least significant decimals were read off
two
milliamp meters numbered 0 to 10. For each count the needles would
point to
the number to be read. The whole instrument was a 2 foot cube that
sat on a
trolley.
After all this time I can not remember the model number. Our company
repaired Air force instruments and recalibration of frequency
?meters?
(calibrated heterodyne oscillators).
Cheers,
Neville Michie
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