[time-nuts] HP Stories: Frequency Counter business

[Brooke Clarke]

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 <time-nuts at lists.febo.com>
> To: time-nuts at lists.febo.com
> Cc: millerke6f at aol.com
> 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 <dave.mallery at gmail.com>
> To: Discussion of precise time and frequency measurement <time-nuts at lists.febo.com>
> 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 <dlewis6767 at austin.rr.com> 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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>