On 11/16/2011 8:47 AM, Chuck Forsberg WA7KGX N2469R wrote:
I don't know exactly which
timebase my 1992 has, but I did notice the 5 to 10 MHz doubler
on the back of the oscillator, The back has separate coarse
and fine frequency adjustments. Can someone identify which
timebase is fitted to
Hi Chuck,
You need to look at the option sticker on the back of the unit. The 04* is the
oscillator option.
04T is a TCXO 3x10^7 per month temp1x10^6 0-40 deg C
04A Ovened oscillator 3x10^9 per Day temp3x10^9 0-45 deg
04E High stability ovened oscillator 5x10^10 per day temp7x10^9 0-50
There are other Racal timebase options as well.
I have a Racal 1999 counter that originally had a 04C timebase option
that was not ovened and had a single adjustment screw. I replaced it
with a 04A ovened ocxo that has a single adjustment screw. I will
shortly install a 04E ocxo as Robert
/85 catalogue.
Robert G8RPI.
From: Larry McDavid lmcda...@lmceng.com
To: Robert Atkinson robert8...@yahoo.co.uk; Discussion of precise time and
frequency measurement time-nuts@febo.com
Sent: Wednesday, 16 November 2011, 18:25
Subject: Re: [time-nuts] Racal-Dana
time and
frequency measurement time-nuts@febo.com
Sent: Wednesday, November 16, 2011 7:56 PM
Subject: Re: [time-nuts] Racal-Dana 1992 Startup -- GPIB!
These counters used Racal's own 94xx series OCXO's. The 04A normally had a
9442, the 04E had the 9420. Easy way to tell which is which is the size
.
Robert G8RPI.
From: Larry McDavid lmcda...@lmceng.com
To: Robert Atkinson robert8...@yahoo.co.uk; Discussion of precise time and
frequency measurement time-nuts@febo.com
Sent: Wednesday, 16 November 2011, 18:25
Subject: Re: [time-nuts] Racal-Dana 1992
November 2011, 21:49
Subject: Re: [time-nuts] Racal-Dana 1992 Startup -- GPIB!
Robert,
Do you have any information as to where a 9421 stands in this regime, specs
etc? It is the same size as the 9420 and has a doubler board attached, but I
don't know what equipment it was used in.
Regards,
John
On 11/16/2011 11:56 AM, Robert Atkinson wrote:
These counters used Racal's own 94xx series OCXO's. The 04A normally had a 9442, the 04E
had the 9420. Easy way to tell which is which is the size. They are both 51mm (2)
square with the 9442 being 51mm tall and the 9420 is 96mm (3.75) tall. The
Sent: Wednesday, November 16, 2011 9:49 PM
Subject: Re: [time-nuts] Racal-Dana 1992 Startup -- GPIB!
Robert,
Do you have any information as to where a 9421 stands in this regime,
specs etc? It is the same size as the 9420 and has a doubler board attached,
but I don't know what equipment
