[time-nuts] HP 5090B
EWKehren at aol.com
EWKehren at aol.com
Fri Oct 15 18:39:37 UTC 2010
Many of the units showed up in the early 90's on the European surplus
market when Droitwich switched to 198 KHz as part of a global frequency
realignment plan. I bought one and tried to convert it to 60 KHz. Not much luck.
Still have it some where, got spoiled by Loran C and still use my Tracor 599
and an eight inch ferrite antenna here in Miami on 60 KHz.
Bert Kehren
In a message dated 10/15/2010 1:27:48 P.M. Eastern Daylight Time,
robert8rpi at yahoo.co.uk writes:
Hi David,
I had one of these years ago. As others have said, its a UK 200kHz
receiver. full of pot core transformers. I decided it was not worth the effort to
convert it to 198kHz. In the end I put a OCXO and divider in the case.
Robert G8RPI.
--- On Thu, 14/10/10, David C. Partridge <david.partridge at perdrix.co.uk>
wrote:
From: David C. Partridge <david.partridge at perdrix.co.uk>
Subject: [time-nuts] HP 5090B
To: "'Discussion of precise time and frequency measurement'"
<time-nuts at febo.com>
Date: Thursday, 14 October, 2010, 20:45
OK, I just got one of these as part of a lot of other test gear.
What is it for? I found nothing searching the archive, and Google didn't
help much either. The Agilent site disclaimed all knowledge!
I suspect it MIGHT be an off air frequency standard as it has 1MHz and
100kHz outputs and an aerial input.
Any clues - or pointers to documentation?
Regards,
David Partridge
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