Claims on antenna efficiency at these frequencies are fairly meaningless (as
always) in that a normal antenna efficiency would be less than 1% !!
Alan
G3NYK
- Original Message -
From: JIM FARLEY jimfar...@att.net
To: t...@patoka.org; Discussion of precise time and frequency
These units multiply the frequency delta and the phase change quoted is
probably 10^n times the actual difference. The output is f + n*delta(f)
I have but do not use a Montronix 100-7 (before the Fluke purchase)
Alan
G3NYK
- Original Message -
From: Bill Hawkins b...@iaxs.net
To:
Hi Antonio you must remember the static geomagnetic field is around
50,000nT and the biggest Solar induced events are around 500nT so the
effect might be difficut to detect as events of this size are not very
common. More common events are in the 100 to 200nT range.
Alan
G3NYK
-
Simple temperature sensors use the static diode characteristic, but a more
accurate method is to use the slope of the characteristic, this is independent
of individual diode parameters, though requires a little it more electronics to
display. There are many papers on this back in the 1960/70s.
er not boiling watersteam. Water's boiling point is affected by the
dissolved gasses and other contaminants.
Alan
G3NYK
- Original Message -
From: Bill Dailey docdai...@gmail.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, July 21,
/2012Issues.html
http://www.prc68.com/I/DietNutrition.html
Alan Melia wrote:
er not boiling watersteam. Water's boiling point is affected by the
dissolved gasses and other contaminants.
Alan
G3NYK
- Original Message - From: Bill Dailey docdai...@gmail.com
To: Discussion of precise time
Jim I am not sure if this will meet your requirement for hygene but google
Trinity Power Inc (Bob Yarbrough) he has a unit that was featured in EDN
some time around a year ago. I doesnt switch fast enough at present but that
could be altered. the problem might be that I think it is a PLL
Hi Don, Jim, that is the one I was refering to, It has a VCO as the source
(all part of the AD4351) but I think your description of the unit is more
accurate that mine. Contact him directly he is keen to contact new areas and
hobbyists. There are two units one is a source with 4 output levels,
Jim,
Bob Yarbrough's built units do 50 to 4400MHz, +10dBm and input for external
10MHz ref signals, though has an internal 10MHz TCXO. It sounds worth a try
if it can be programmed to step fast enough, min step size is 1kHz (from
memory).
Alan
G3NYK
- Original Message -
From: Jim
Said I read through the description carefully .I suggest you request a
refund from eBay for their use of incompetant computer translation which
fails to recognise English technical words and phases, so blocking your paid
for posting. The trigger can only be due to a stupid word selection in
The politics of this system are a bit dubious as are the claims on accuracy
and freedon from jamming. But it does give us another off-air frequency
standard.
Alan
G3NYK
- Original Message -
From: Dr. David Kirkby (Kirkby Microwave Ltd)
drkir...@kirkbymicrowave.co.uk
To: Discussion
Mmmm yes you can see the equation evaluation starting to rise in your
Warmer plot, as Mark says, which will make a nonsense of the formula if
your summer temps get above 28.
Why not a table and then interpolate between the table data points?. You
might have more points where the changes are
As a subscriber to QEX I saw this article but thought that the bi-phase
rectifier was a lot easier and has be well characterised by the
time-nuts experts. Now it has shown up here I would be interested to hear
from those experimenting how badly the NE602 performs compared with a
passive DBM
Isn't the 10i/p gate to do the divide by N+1?? not just to avoid an all
zeros switch on which does not need all 10 stages fed back if all you want
is an N stage ring counter??
Alan
G3NYK
- Original Message -
From: Tim Shoppa tsho...@gmail.com
To: Said Jackson saidj...@aol.com;
Yes below about 4v is the only place where you get the real Zener effect,
as you go above 5v it becomes Avalanche Breakdown. The trick is zener effect
has a negative tempco and avalanche a positive one (I thinkthey are
opposite senses anyway :-)) ) the result is a regulator diode
Hi Corby I havent checked Liberty Basic but I believe it does support
57.6kBd.. I have definitely used this speed on PowerBasic for Windows which
is a latter day upgrade of Borland stable, I believe, but very is very
different to GWBasic or QBasic (which is also limited to 9600Bd) and is much
Dinosaurs ruled the world for millions of years, and morphed into creatures
that ruled the air until very recently .bit longer than dotcomms
...They were very successfull :-))
Alan
G3NYK
- Original Message -
From: shali...@gmail.com
To: Discussion of precise time and frequency
Rick, Adrian, I think there are a number of possibly material related areas
that could cause a varicap to go noisy but I have no experience of them
First a reversed biased diode makes quite a good particle detector :-)) and
remanent radioactive atoms in say the glass could cause localised
Hi Paul think synchronous data transmission where you cant detect enough
signal to synchronise reliably via the bit edges received. Initially
developed for LF (136kHz) where the ERP of amateur antennas is very low.
Google Joe Taylor but not for his Nobel prize, who's original interest was
Hi Anders, isn't this format exactly what is inside the high level mixers
(spec'e +17dBm) from Minicircuits?
Alan
G3NYK
- Original Message -
From: Anders Time anderst...@gmail.com
To: time-nuts@febo.com
Sent: Friday, November 23, 2012 3:42 PM
Subject: [time-nuts] Best phase detector /
phase detector / mixer for 100MHz?
NIST have shown (at least at 10MHz) that the high level mixers they tested
are noisier than the ZRPD1.
Bruce
Alan Melia wrote:
Hi Anders, isn't this format exactly what is inside the high level mixers
(spec'e +17dBm) from Minicircuits?
Alan
G3NYK
Joe do you have a model number I have a C-Mac data book for this company and
they have a wide variety of packages
Alan
G3NYK
- Original Message -
From: Joseph Gray jg...@zianet.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Saturday, November
Joe the reason why its not so uncommon may not be obvious in the US :-))
12.8MHz is used as a reference for commercial and amateur PLLs in Europe
where the common channel spacing is 12.5kHz (/1024) or 6.25kHz (/2048). This
may mean that 12.8MHz oscillators may be more easily found in Europe ??
Have you tried Princeton Applied Research who seem to own the EGG rights
now??
Alan G3NYK
- Original Message -
From: johnk0...@juno.com
To: time-nuts@febo.com
Sent: Sunday, December 09, 2012 8:14 PM
Subject: [time-nuts] Cinox source
I realize this is pretty mundane for such an
The HP sceme in the patent refers to an array of series and parallel
diodes to reduce noise.
Just paralleling them does not reduce the noise!
Might this not depend what the type of noise was ?? JRC use this technique
in the RF stage of their receivers but I am wondering if this is only valid
Volker.look at the subject line, the posting is in your hands, you dont
need to just use the reply button, as somone did with a digest which
forked the thread.. This means all the posing under Digest are hidden
from view and searching. You can edit the subject line but this does not
Hi Fabio taking BJTs deep into saturation stores a lot of charge in the
collector base capacitance. this must br discharged before a state change
can occur. LSTTL gets round this and gets the speed at lower currents by
clamping the collector to only just in saturation with a schottky diode
Hi Daniel, I cant remember the reference the web site might help but there
have been at least a couple of articles on YIG modules in VHF Comms magazine
Alan G3NYK
- Original Message -
From: Daniel Mendes dmend...@gmail.com
To: Discussion of precise time and frequency measurement
Hi Chuck, It never went off!! The French are spear-heading this. An
experimental eLoran station was run from Rugby (GBR site) before it finally
closed then the gear was relocated to be run by VT Communications, now
Babcock I believe, based on Anthorn (south bank of the Solway Firth). This
uses
I dont have the reference in front of me but it might just be worth checking
the article archive for the Elektor magazine.I have a vague feeing I
might have seen something there. Many of their past projects have used the
LPT as a programmable port. There should be an article index on their
Hi Iban do you have a manual? they are available. From memory because its a
while since I worked on my Wavetek- Rockland unit I believe the remote
programming is in parallel with the front panel switches. The reason for
raising this is that there may be a problem on the back of the panel
unit the shares latch
the 100mhz with the 10mhz. The 1ghz latch is shared by the 1hz decade.
Best regards
73! Iban
eb3frn
On Fri, Mar 1, 2013 at 8:27 PM, Alan Melia alan.me...@btinternet.com
wrote:
Hi Iban do you have a manual? they are available. From memory because its
a
while since I worked
Some of the older synchronised signal generators (2-box systems) e.g
Marconi, used TNC connectors with solid coax where signal leakage was likely
to be a problem.
Alan G3NYK
- Original Message -
From: Volker Esper ail...@t-online.de
To: time-nuts@febo.com
Sent: Sunday, March 03, 2013
Hi John Please dont take it down! remember there are more of us who quietly
appreciate sites like yours. I once suggested to a query the answer was in
the help file and background by googling or using wikipedia, and was told it
was a lot easier and quicker to play dumb and ask.!!
I also suggest
Hi all an interesting problem you may have encountered, I want to use a GPS
frequency standard inside a building with no opening windows (opening
windows are known as air conditioning in the UK :-)) )
This is part of a two day amateur microwave conference so we should have the
expertise.
I
...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Alan Melia
Sent: Monday, April 08, 2013 1:00 PM
To: time-nuts measurement
Subject: [time-nuts] GPS antenna??
Hi all an interesting problem you may have encountered, I want to use a
GPS
frequency standard inside a building with no opening
Hi Tom yes I have produced some similar plots I think they get cold feet
about 70deg N. I'm not sure of the actual value it is a long time since I
played with that last.
Alan
- Original Message -
From: Tom Van Baak t...@leapsecond.com
To: Discussion of precise time and frequency
Hi David yes its ferro-concrete which makes quite a good screen (a lot worse
than domestic brick) but the windows are not coated I think. (BT Labs at
Martlesham)
Thanks all for some thought stimulating ideas .GPSDO outside might not
be too easy1U rack case mains poweredno power
. It's easy to test by looking at your indoor SV count and
reception levels. With patch antennae you don't have to worry about RHCP
issues, right?
/tvb
- Original Message -
From: Alan Melia alan.me...@btinternet.com
To: time-nuts measurement time-nuts@febo.com
Sent: Monday, April 08, 2013
Maybe a silly question but isnt the phase response of the filter important
in this application ?? notches have fairly vicious phase shifts.
Alan
G3NYK
- Original Message -
From: Luciano Paramithiotti timeok...@gmail.com
To: time-nuts@febo.com
Sent: Thursday, April 11, 2013 5:42 PM
Bert is there any way we can add our names to some expression of thanks to
his widow Karen and her helpers for their work and maybe leave a remembrance
of his worldwide friends for his family?
Thanks for your efforts
Best wishes
Alan Melia (G3NYK)
UK
- Original Message -
From
disapointed but not unhappy. I certainly appreciate the help and expertise
the Group provides..and it is nice to be able to say so, and salute the
work Brooks did.
Thanks and Best Wishes
Alan Melia
(G3NYK)
- Original Message -
From: ewkeh...@aol.com
To: time-nuts@febo.com
Sent: Monday
of remembrance of his worldwide friends, for his family?
Even if it is just a me too replying to this message.
Alan Melia (G3NYK) Ipswich, UK
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman
Hi Marco maybe you should run a web site with daily measurements and shame
them into doing it properly ( your traceable to NIST should raise some
hackles !!) I took me four months to get a short term wander on 198kHz
looked at a few years ago. I was cured when the synth finally failed
I use this method too, but I also find it little use trying to get the
internal reference down to the last squeak in 10^11 on this kind of kit. It
will not hold the setting for vey long and it takes ages to get the
adjustment spot on. I get as close as I can easily.then allow the
unknown
Hi Bob whats the problem at low freqs ?? I thought leakage was a function of
the size of the holesv the wavelengthor are we into braid skin effect
below 100kHz?? so as not to drag this OT a reference will suffice in answer.
Best Wishes
Alan G3NYK
- Original Message -
From: Bob
Well I guess no because accuracy is the deviation from a known standard (I
think) Stability repeatability might be better but you need to consider what
the variables might be. Variations in thickness (basically frequency), cut
angle (temp coeficient and maybe others), crystal purity (aging, ESR
Is it possible that mechanical (pendulum) clocks could couple not due to
energy transfer between the clocks but external mechanical events such as
seismic events of a very low level ?? or even gravitational or lunar
gravitational effects.?? Maybe the same for water clocks ??
Alan G3NYK
-
/pdf/news/481.pdf
http://www.bhi.co.uk/hj/Coupled%20Pendulums%20Quadrature%20and%20Clocks%20by%20John%20Haine.pdf
http://www.ralph-abraham.org/articles/MS%2344.Resonance/ms44.pdf
Stanley
- Original Message
From: Alan Melia alan.me...@btinternet.com
To: Discussion of precise time
The ones they cant get to work are the most fun...:-))
Alan G3NYK
- Original Message -
From: Bruce Lane kyr...@bluefeathertech.com
To: time-nuts@febo.com
Sent: Friday, May 21, 2010 11:31 PM
Subject: [time-nuts] Lucked out
Fellow time-tickers,
I lucked out on that NTS100i. No, it
Hi John I have a manual dated 1989 for a later version Apelco ( DXL 6300)
The manual covers operation nicely, but the data for the Lessay chain is
incorrect. I can enter the GRI manually and the receiver locks nicely. I
have disassembled the eprom but cannot recognise the data areas to patch the
I have not been involved in this project but have had pcbs from eastern
sources supplied to RoHS. Some have come in with bare copper pads. I wonder
if the reason for this may be that their standard process was not tinning,
but it was a a solder-flow stage, and they still have lead-tin solder
Hi Jim ...being ironic...see the smiley
Alan
- Original Message -
From: jimlux jim...@earthlink.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, August 10, 2010 11:55 PM
Subject: Re: [time-nuts] Remove Pictic boards from envelopes
Alan
Surely all this is a case of an engineer being able to
read..specifications :-))
Manufactures specify to sell parts, most of the important parameter are
minimum values, and the range is as wide as it can be. If you want a
parameter bracketed then you must specify that when buying and pay the
Hi Bob yes that was a point raised by Prof Nat Sokal after I published some
data, or rather he pointed out it happened in RF amps. I guess if you take
an used PA transistor out of service and measure it you might find the base
emitter junction very leaky, but does few mA of leakage matter so much
Hi I have just acquired a couple of GPS receiver pcbs, ex Telcoms equipment.
I know a lot of htese poards were discussed so time ago on the group. Does
anyone recognise what they are and could point me at some intrormations
please.
I am afraid the flash has washed the the pics out a bit but
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Alan Melia alan.me...@btinternet.com
Sender: time-nuts-boun...@febo.com
Date: Thu, 19 Aug 2010 00:07:20
To: Time-Nuts measurementtime-nuts@febo.com
Reply-To: Discussion
://trl.trimble.com/docushare/dsweb/Get/Document-183796/13441+Resolution+FA2.pdf
http://www.dpie.com/manuals/gps/trimble/ResolutionT_072408.pdf
Stanley
From: Alan Melia alan.me...@btinternet.com
To: Time-Nuts measurement time-nuts@febo.com
Sent: Wed, August 18, 2010 6:07
in advance,
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Alan Melia alan.me...@btinternet.com
Sender: time-nuts-boun...@febo.com
Date: Thu, 19 Aug 2010 00:07:20
To: Time-Nuts measurementtime-nuts
] On
Behalf Of Alan Melia
Sent: Thursday, 19. August 2010 12:44
To: did...@cox.net; Discussion of precise time and frequency
measurement
Subject: Re: [time-nuts] GPS pcb IDs??
Hi Didier, the Trimble is a Resolution T (3.3v)user manual at the
URL
quoted by Stanley (Thanks again Stanley
...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Alan Melia
Sent: Friday, August 20, 2010 6:37 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] GPS pcb IDs??
Thanks Christian, I have that doc but although I think it is probably
relevant the outline
Mark to my inexpert eye that doesnt look like a very good overtone
oscillator but I appreciate that it is slimmed down to keep the weight and
size down, I can see why it is touchy. There is nothing to make the
oscillator degenerate at the crystal fundamental. In fact it looks like a
Pierce with a
Hi Mark looking at the M15m article where the design seems to stem from
suggests that the oscillator is NOT opertaing on 150 or 200 MHz but in fact
40 to 50 Mhz with a cheap crystal and the LC collector circuit is selecting
the the 3rd or 5th harmonic (not overtone a common mis-apprehension) The
Dick did you ever try an unscreened loop ?? they should be just as good if
not better at 60kHz.
Alan G3NYK
- Original Message -
From: Dick Moore rich...@hughes.net
To: time-nuts@febo.com
Sent: Saturday, October 02, 2010 11:22 PM
Subject: Re: [time-nuts] HP/Dymek DY-5842
I used to have
-busters. This was before I built a GPSDO or two
and then got a TBolt.
The shielded loop has just been sitting for years.
Dick
On Oct 2, 2010, at 3:42 PM, time-nuts-requ...@febo.com wrote:
Message: 5
Date: Sat, 2 Oct 2010 23:40:52 +0100
From: Alan Melia alan.me...@btinternet.com
The loop will be tuned (!) but hopefully to a freqency much above 60kHz by
the inter-turn and turn to screen capacitance. Also hopefully this will be a
low Q resonance and the phase frequency response at 60kHz should then be
stable with ambient conditions. Interestingly a lot of the modern LF and
Hi Poul-HenningOh yes we did ! but the closed a long time ago.
MSF was on 2.5, 5 and 10 Mc/s:-)) (It only hertz when I laugh)
OMA similar
HBG
there may have been others.
I seem to remember the HF stations took it in turns to transmit
Alan G3NYK
- Original Message -
From:
Hi Magnus its was a pity they didn't manage to communicate with some of my
office collegues so as to to confirm the hand of the polarisation they
were using though :-)) Goodhilly changed the feed for the other polarisation
on the day of the first test, and it was a bit of a TV disaster. Lanion had
It'll be your fault !! :-))
I was wondering about these but didnt know what they were like.I have a
space in the rack.it 'ud better be good!!
Alan G3NYK
- Original Message -
From: gandal...@aol.com
To: time-nuts@febo.com
Sent: Monday, October 11, 2010 10:13 PM
Subject:
Hi I do not follow al the techniques in detail but a lot of work has been
done on soundcard sampling rates in the low frequency amateur radio groups
where GPS locking is used to extract very weak signals from the noise in
very narrow band widths. It has been found that some of the supposed
You must also bear in mind that this a world-wide list. personally I would
not be interested in sales of test equipment within the US, and I would not
look here for equipment I might like to own. (Others in the Europe might)
However, I would not object to a note that some gear is avilable and a
On the 4th July it (the Sun) was actually at its furtherst point from earth
so we were getting less radiation .did your burghers take longer to cook
?? :-))
Alan G3NYK
- Original Message -
From: Chuck Harris [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
Hi Dave Rapid Electronics in Colchester do SMBs the eaiest way to get
200 ohms might be 2 by 100ohm in series..though it wont fit a ready made
1206 size pcb :-((
www.rapidelectronics.co.uk
or www.rapidonline.com is one they quote now I think both work.
I dont think you will get 74ACs there
Hi Ian I dont know whether it works for that unit, but try the Hameg site.
http://www.hameg.com/66.0.html
There are almost complete manuals for all the units (well certainly the
scopes!) You may find that there are no schematics in the English
versionsdownload the German versions (which you
a while back.
Tried your tip and looked at the German version, but no luck either.
Thanks for the suggestion though.
Cheers,
Ian.
- Original Message -
From: Alan Melia [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, July 22
Hi all, in the process of setting up a GPS time standard for a Radio
Astronomy facility (amateur) we installed a GPS receiver in a small cabin
with a translucent roof, thinking that would not impede the GPS signal.
After a lot of head scratching as to why we were not getting the performane
we got
Message -
From: David Ackrill [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, August 10, 2008 8:30 AM
Subject: Re: [time-nuts] GPS shielding by power lines?
Alan Melia wrote:
Hi all, in the process of setting up a GPS time standard
Hi Tom Brilliant I hadnt thought of the fields actually affecting the
operation of the electronics! that is certainly something that might be
interesting to check. I note there lines have three phase feeds but no
neutral wire so they must use ground as the return path to any unbalance
currents.(?)
Hi Didier, thanks for that idea, yes they were all pucks all Garmin two
intended for marine use and one was a old Garmin GPSIIplus with a mag
puck. I have a Trimble Palisade that I have not got round to working on
yet, but I understand that there are problems putting this version into NMEA
Hi David yes indeed and the qualify of the fix imporves as we move away at
right angles to the linedespite some trees and a tall hedge on one side.
Dramatic and quite repeatable.
Alan G3NYK
- Original Message -
From: David McGaw [EMAIL PROTECTED]
To: Discussion of precise time and
Hi Corby, my 1250a has an EFC connection on the rear panel (a bnc connector)
I have some circuitry but not sure at present what suffix letter it refers
to My 1250as have a 5MHz OCXO.
Alan G3NYK
- Original Message -
From: corby d dawson [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent:
Hi Corby and Nigel. I think I have a data sheet for the 1150 oscillator
somewhere as well. I have an orphan 1MHz unit. The a definitely has the
EFC on the rear and I recollect seeing a spec for the swing per volt. I seen
to think it is quite fine and would be useful for GPS steering.
Alan G3NYK
- Original Message -
From: Gretchen Baxter [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, November 03, 2008 5:03 PM
Subject: [time-nuts] Do any regulations or laws require time to be accurate
within 'x' seconds?
Greetings,
This is an interesting thread again.it may be similar to ones that have
been discussed, but one or two furthur questions occur to me. I have a
Montronics sytem that does comparisons by the multiply and mix process, and
I find (also common to more modern Kethly systems) that the limitation is
Some of the ex Telcom units I have seen have 10MHz Rb or OCXO (Datum or
Lucent) and a 10 to 15MHz converter in a milled cover externallysome
frequencies are more easily generated from 15MHz.
Alan G3NYK
- Original Message -
From: [EMAIL PROTECTED]
To: Discussion of precise time and
Neville there is a Fourier routine built in I have used it for time sequence
analysis. It is not loaded by default. You may have to check the dropdown
menus to load it in (at least that was what I needed to do, but I am mean
and running an old Op-system :-)) )
Cheers de Alan G3NYK
- Original
Hi Bill
About 100 millenia of accumulated experience with probably the last 2 or
three actually farming very successfully where you need to know about
seasons. The Celts were a very civilised people (but their history was
written by their conquorers!) and great traders even in those days. Flints
Hi Magnus, I am sure I have at least one astro planetarium program somewhere
(it doesnt get much use here) that will allow you to set the clock to 5000BC
not GPS disciplined though :-)) I will have to check the detail. One was
written by a good friend now deceased.
Alan G3NYK
Hi all, I am running an AMD Duron 700MHz running W98SE when run the program
opens a DOS window but crashes the video monitor until the program is
stopped with the escape key. So some of the problems may be with the monitor
parameters which may not support the high res that a lot will be running
I am sure it is NOT a good idea to hand heavy cable like RG-8 from the
N-type connector. What will hapen is that the cable will walk out of the
connector and the centre pin will withdraw from the socket. This happens
whilst the outer jacket stretches so there is no indiction there is a
physical
Hi Hal, No, not as far as I know, and it is only intended to happen for a
short (stub mast) distancce. The method I would use is to cable cleat two or
three pieces of cord (use two or three cleats in series over 2 or 3 inches
of jacket) on the jacket/sheath before dropping the cable down the tube.
Helmut maybe you are not seeing it but it is the 2nd line attached below.
Alan G3NYK
- Original Message -
From: helmut.im...@t-online.de
To: time-nuts@febo.com
Sent: Saturday, March 07, 2009 4:31 PM
Subject: [time-nuts] delete
Please delete me from the email distribution list.
Thanks!
Hi Rob you might be able to get the official line from Peter Whibberly at
Teddington.
Alan G3NYK
- Original Message -
From: Rob Kimberley r...@timing-consultants.com
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Tuesday, March 17, 2009 7:58 PM
I wonder what the FDA (Frequency Determining Association ??) has to say
about that :-))
Alan G3NYK
- Original Message -
From: Magnus Danielson mag...@rubidium.dyndns.org
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Friday, April 17, 2009 11:15 AM
What radioactive decay ?? There are isotopes of most of these naturally
occuring alkaline elements but most are very stable.you dont want the
gas in your Rb lamp transmuting away !!
There may even be nutritional benefits in snake oil :-))
Alan G3NYK
- Original Message -
From: Dave
Or find the right prommer Peter :-)) Rom read correctly and image returned
to David with the right checksum.
Alan G3NYK
- Original Message -
From: Peter Vince pvi...@theiet.org
To: bro...@pacific.net; Discussion of precise time and frequency
measurement time-nuts@febo.com
Sent:
Hi I wonder if anyone still has a datasheet/catalogue of Cathodeon products.
This firm made crystals and oscillators and filters in the 1980 and 90s in
Cambridge, England. (It is only 50 miles up the raod but I have not been
able to find anyone who still has any knowledge of the products.)
The
of Philips. I understand that nothing has survived of the old Pye
Group, so it may be difficult to obtain any new data.
Roy
- Original Message -
From: Alan Melia alan.me...@btinternet.com
To: time-nuts@febo.com
Sent: Sunday, May 24, 2009 8:12 PM
Subject: [time-nuts] Cathodeon TCXOs
' of storage space
by my employer - everything is on the internet); I'll check up on it
tonight.
Paul G8GJA
-Original Message-
From: Alan Melia [mailto:alan.me...@btinternet.com]
Sent: 24 May 2009 20:12
To: time-nuts@febo.com
Subject: [time-nuts] Cathodeon TCXOs??
Hi I wonder
I have seen it talked about (around the LF fraternity, but generally they
are stable enough there and just need calibation) a lot but not accomplished
yet.
How about injection locking the on board oscmaybe gating the feedback
with the referencenote I havent tried this? Another technique I
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