[time-nuts] HP5532A for free

steve heidmann steveheidmann at yahoo.com
Wed Jul 18 12:19:35 EDT 2007

There are frequent 5326's out there cheaper than shipping.

Magnus Danielson <magnus at rubidium.dyndns.org> wrote:
  From: Rex 
Subject: Re: [time-nuts] HP5532A for free
Date: Tue, 17 Jul 2007 18:33:18 -0700

> ); SAEximRunCond expanded to false
> Errors-To: time-nuts-bounces+magnus=rubidium.dyndns.org+magnus=rubidium.dyndns.org at febo.com
> On Tue, 17 Jul 2007 21:19:40 EDT, SAIDJACK at aol.com wrote:
> >Dixie tube
> An old neon tube display for those South of the Mason-Dixon line?
> (vs. Nixie tube for those North.)
> Sorry, couldn't resist.

I thought Dixie tube was a feature on the steam engine on one of those
Mississippi boats.

My old HP 523C does not have Nixie-tubes, such modern shit. No, it uses pure
neon lamps which light up a little display of 0-9. :)
I only have a 5-digit one, but there are others that had 6 digits.

I have the deluxe variant with a CRYSTAL OSCILLATOR. 100 kHz. Phantastron
dividers. The normal version has a Phantastron divider which you tune for a
divide by 5 or 6 depending on 50 or 60 Hz. That divider is set for 10 when
having the crystal oscillator assembly. As I recall it, the Phantastron uses up
a penthode and diode, but since double-diode tubes is used the tube count isn't
that high.

The fun thing is that IT STILL WORKS! Maybe not as high in frequency as it is
supposed to (it seems to garble things up at 120 kHz but it should handle 220
kHz or so since it has the high speed (!) counters in it. It has a thad lower
singel shot resolution compared to the 5370B and Wavecrests.

I scored a Marconi Nixie counter while dumpster-diving. Also works but it had
some minor issue as I recall it.

Last friday I tune up a friends 5243L and succsesfully counted 490 MHz with the
module. It has a large oven which was out of tune, but it was easy enought to
tune it up. He also has the 3 GHz and 12.4 GHz modules that is only supposed to
go into the 5245L, as the counter needs slightly more than 50 MHz counting
range and the 5243L is limited to a little more than 30 MHZ. 


time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Pinpoint customers who are looking for what you sell. 

More information about the time-nuts mailing list