The 5060A was listed at $15,500 in the HP 1966 Index of equipment (page 27)
On 8 Apr 2012, at 11:08, Mark Sims wrote:
Looks like my keyboard is on the way out... seems to want to type 8's for
6's and a few other keys are also glitching.
I think HP charged $60,000 for their first cesium
operates a differential gear in the drivetrain. There
is a 'pips' output which is 100mS of 1KHz every second.
I would be most interested to hear from anyone with information about this
device, how and where it was used, circuitry etc.
John Howell (in the UK).
On 12 Mar 2012, at 10:36, Rob Kimberley
and here's another photo of the pulse from one of the newer breed of
FE-5680A that require the 5V.
Taken with a Sony Cybershot H5, 8 sec exposure, 'scope is an elderly Tektronix
2252
http://dl.dropbox.com/u/1690159/1PPS_1%20FE-5680E.jpg
John H.
On 2 Feb 2012, at 15:50, Alberto di
generation of digital cameras can
be used for this application. It is too bad that the image has so
much noise.
On Thu, 2 Feb 2012 16:27:03 +, John Howell j...@howell61.f9.co.uk
wrote:
and here's another photo of the pulse from one of the newer breed of
FE-5680A that require the 5V
According to the manual (publication TH62B4 issue 4.10.91) options 04T, 04A,
04B are all 10MHz. No mention of 04c. I vaguely remember hearing that Racal
were so satisfied with their 5MHz standards than rather than produce a 10MHz
version they simply attached a frequency doubler. I have a 9421
Well done Ziggy, I for one am grateful for your efforts, I commented previously
on the high standard of construction but I couldn't believe that the angles of
the screw slots at the corners of your schematic are identical to those in the
lid of my TS65! grin
John H.
On 26 Jan 2012, at 03:14,
:
Hi John:
Is there a photo of the freq std on line?
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/Brooke4Congress.html
John Howell wrote:
Thanks Bob,
If it helps the switched frequencies are: 0, 10, 20, 40, 60, 80, 100,
120, 140, 160, 180
Hi All,
I recently obtained a curious Low Frequency Standard dating from the late
1950s. Its output can be switched to a number of frequencies from 10 to 190Hz,
derived from a tuning fork. It is marked Signal Corps and US Army with a
type number TS-65D/FMQ-1.
Does anyone have any information
: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of John Howell
Sent: Tuesday, January 24, 2012 5:00 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] US Army Frequency Standard
Hi All,
I recently obtained a curious Low Frequency
of the freq std on line?
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/Brooke4Congress.html
John Howell wrote:
Thanks Bob,
If it helps the switched frequencies are: 0, 10, 20, 40, 60, 80, 100, 120,
140, 160, 180, 190Hz.
John.
On 24 Jan 2012, at 22
It's gone now (checked 10:35 Hrs GMT 01-01-2012) S'pose clocks that used the
code will be discarded or the owners will discover how good or bad the built-in
quartz osc. is.
Happy New Year to all,
John H.
On 1 Jan 2012, at 00:23, Alan Melia wrote:
Probably when the hung over teckies get
I know someone who has one, I'll try and get details.
John H.
On 1 Jan 2012, at 15:11, Attila Kinali wrote:
On Sun, 01 Jan 2012 11:23:48 +0100
Marco IK1ODO ik1...@spin-it.com wrote:
Never saw a clock controlled by HBG, only by DCF. Must ask some Swiss friend.
I live in switzerland,
Surely spinning it would superimpose a rate modulation at 0.0833 Hertz due to
the alternating earth's magnetic field? {:-)
Merry Christmas from Pinner, at one time home to Heath-Robinson the 'inventor'.
On 22 Dec 2011, at 21:19, Chris Albertson wrote:
On Thu, Dec 22, 2011 at 12:57 PM, Azelio
Agreed 340mA seems too high, mine takes 87mA. There has been much
comment on [time_nuts] about the temperature of these units varying from
'let 'em get hot' to 'must heatsink'.
In my experience items that require a heatsink have a milled flat surface
to mount to a sink, not a thin case that would
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 H.
On 16 Nov 2011, at 19:56, Robert Atkinson wrote:
These counters used
Thanks Alan, just what I wanted!
J.
On 16 Nov 2011, at 22:58, Alan Melia wrote:
Hi John the attached is out of a 1987 catalogue.
Alan
G3NYK
- Original Message -
From: John Howell j...@howell61.f9.co.uk
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Quartz movements and dials having hour hands that rotate once in 24 hours can
be found, see
http://www.seldecpublishing.co.uk/clocks/
John H.
On 12 Nov 2011, at 12:08, Azelio Boriani wrote:
Yes for 12-hour display but here in Europe we usually have 24-hour
displays. Of course analog
David,
Given your results and the price, the londoncolour antenna is a 'must try'.
Also the extra cable length will get the puck to a window which should also
help. The 1804M has already shown how stable my old HP107BR quartz standard
really is. Not being a software person I must now go and
David,
I'm in a similar position to you regarding GPS aerials, may I ask where you
obtained your 'better puck'?
John H.
On 17 Oct 2011, at 15:45, David J Taylor wrote:
..
The box was supplied with a generic GPS puck antenna by the eBay seller, and
it's not that
the best available. I have
one of these and it still produces a good distortion free signal for testing
and measurement of audio gear.
On Tue, Oct 11, 2011 at 6:06 PM, John Howell j...@howell61.f9.co.uk wrote:
Sorry Tom, (again!),
Just as significant is the radiation from compact
You should be able to receive France's Allouis transmitter on 162KHz. It is a
2MW transmitter with a carrier accuracy of 2 parts in 10 to the 12th. I believe
it carries a timecode.
John H.
On 12 Oct 2011, at 09:32, David J Taylor wrote:
Folks,
I'm happy with my timekeeping, but I would
powered slave clock. High initial current pulse dropping to a lower
holding current over the half second activation period. Needs careful selection
of lamp voltage and current.
Regards,
John Howell.
On 11 Oct 2011, at 23:23, Neville Michie wrote:
Incandescent light bulbs are very useful
Sorry Tom, (again!),
Just as significant is the radiation from compact fluorescent lamps, many
radiate strongly in the 50-60KHz region from their SMPSs. This has been the
reason for failure of several clocks I am aware of that are tuned to radiocode
transmissions on 60KHz.
John H.
On 12 Oct
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