[time-nuts] Advice on sighting a roof mounted gps area please

Hi All, I am building a house extension and part of the works involves adding a new hip roof made of corrugated iron. I was thinking I would pass a 50mm pvc pipe through the roof with a tee and then mount two conical gps timing antennas on top of it. I am in a low point and don't have

Re: [time-nuts] HP5370 extender cards?

On 14/08/2014 06:43, Mark Sims wrote: Well, after doing my TM500 extender cables, I was thinking of doing an extender board for the HP5370 boards. It would take two 36 pin extender cards to extend a card out of the card cage (the count chain board has a different connector spacing than the

Re: [time-nuts] question about Thunderbolt geo acuracy

On 11/05/2012 00:44, b...@lysator.liu.se wrote: Hi Tim, The answer is NO. Even though decent accuracy can be had with long averaging. It was discussed a few years ago on this list. -- Björn Hi all, Hope this isn't too chat roomy, however, I have need of a survey precise geolocation type

[time-nuts] question about Thunderbolt geo acuracy

Hi all, Hope this isn't too chat roomy, however, I have need of a survey precise geolocation type gps. I was wondering if the precise timing abilities extend to its precision in position output? I have a thunderbolt and one of those conical white aerials from china and would like to know if

Re: [time-nuts] 5370B airflow

On 21/08/2011 6:42 PM, Heinzmann, Stefan (ALC NetworX GmbH) wrote: I obtained a 5370B with the bad socket syndrome and restored it to working order. I was wondering about the side panels, though. One of the side panels is perforated for airflow, the other isn't. My version of common sense

[time-nuts] Happy New Year from Melbourne UTC+10

First New Year at home ( 20 week old baby ) fortunately the neighbours have let off a few fireworks. Tim ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the

[time-nuts] Anyone have a comparison of the Z3805A and a Tbolt?

Hi All, Have been thinking of getting a GPSODO and I'm looking for advice on what to choose. I haven't been able to find an ADEV comparison between these two units and am curious to know how their differences manifest themselves. Apart from the 12 satelites vs 8 what practical advantages

Re: [time-nuts] HP 5061A on auction 290458191620

On 27/07/2010 11:16 PM, paul swed wrote: it is funny. But maybe those options did turn it into a network analyzer. Powers up untested $1300 AU. Well thats a great gamble for those with spare cash. On Tue, Jul 27, 2010 at 9:03 AM, Javier Herrerojherr...@hvsistemas.eswrote: I've enjoyed the

Re: [time-nuts] This group will appreciate this

On 24/07/2010 1:47 PM, Jim Palfreyman wrote: I picked up an old black bakelite phone in an antique shop and have it nicely on display on a table. I have wired it through to my workshop where it is connected to the old Australian speaking clock (sync'ed to the GPS of course). So when you pick

[time-nuts] So was it one of us who bought the Ausie 5061a?

Just wondering if a fellow time-nut in Australia or Melbourne was the successful bidder for the 5061A Ce that went on e*ay here in Australia? I wouldn't like to pay for shipping stateside! If it is one of us what are you going to do with it? I was going to place a bid - but I have to buy a

[time-nuts] Chances of 5061 and 5062 still having life in them?

Hi Guys, In Australia some Ce units have hit the surplus market. looks like they are from the 70s - that's 40 years old now. What does the group think the probability of the tubes having any Ce left in them and still working? Is it worth it now when one can use gps clocks to lock say an

Re: [time-nuts] HP 5370B ROM images - success

Mike S wrote: Just a quick report. The 5370B ROM image seems to work just fine in a 5370A. At least one GPIB sequence which would cause the original firmware to hang now seems to work fine. I put up a page describing how to change to the newer firmware, based mostly upon an earlier post by

Re: [time-nuts] hp10811 OCXO shipping jolt/drop survival?

Bruce Griffiths wrote: swingbyte wrote: HI all , I had a 5370 A shipped to me that suffered enough of a drop/roll to break a handle and bend the chassis such that the bottom panel had to be modified to get it back on. When I connected the timebase output to the start input the frequency

Re: [time-nuts] hp10811 OCXO shipping jolt/drop survival?

Bruce Griffiths wrote: swingbyte wrote: Bruce Griffiths wrote: swingbyte wrote: HI all , I had a 5370 A shipped to me that suffered enough of a drop/roll to break a handle and bend the chassis such that the bottom panel had to be modified to get it back on. When I connected

Re: [time-nuts] 5370A

Joseph Gray wrote: I just got a 5370A locally and am going through the performance checks. Things are not as they should be. Is there someone who knows this unit intimately who would be willing to help me off list? Joe Gray KA5ZEC ___ time-nuts

[time-nuts] hp10811 OCXO shipping jolt/drop survival?

HI all , I had a 5370 A shipped to me that suffered enough of a drop/roll to break a handle and bend the chassis such that the bottom panel had to be modified to get it back on. When I connected the timebase output to the start input the frequency display is 10.000xx with the last two

Re: [time-nuts] Any Time nuts in AU?

Joseph Gray wrote: Does time run backwards down there? :-) Joe Gray KA5ZEC On Wed, Oct 7, 2009 at 2:53 AM, Ray Hudson hudson...@yahoo.com.au wrote: Just a test to see if I can send to the mailing list and to find out how many time nuts are in the land down under Thanks Ray. Send instant

[time-nuts] Advice on 5370A vs 5370B differences please

Hi all, I have looked through the archives and found that the 5370B has a better front end and dacs and consolidated the ram and mpu onto one card. However, can someone tell me how much better? these changes make the 5370B? What effect upon measurements does the new front end have over that

Re: [time-nuts] Advice on 5370A vs 5370B differences please

Poul-Henning Kamp wrote: In message 72c46d68028c463ebdb775ee14fb9...@laptop, Roy Phillips writes: Tim I have recently acquired a 5370B and find your comments of interest. So in addition, what was the intention of designing the mother-board to have no less than three additional (and in my

Re: [time-nuts] Advice on 5370A vs 5370B differences please

Magnus Danielson wrote: swingbyte wrote: Poul-Henning Kamp wrote: In message 72c46d68028c463ebdb775ee14fb9...@laptop, Roy Phillips writes: Tim I have recently acquired a 5370B and find your comments of interest. So in addition, what was the intention of designing the mother-board to have

Re: [time-nuts] Big bang theory

Jim Palfreyman wrote: To quote wikipedia: David Saltzberg, a professor of physicshttp://en.wikipedia.org/wiki/Physicsand astronomy http://en.wikipedia.org/wiki/Astronomy at the University of California, Los Angeleshttp://en.wikipedia.org/wiki/University_of_California,_Los_Angeles, checks

Re: [time-nuts] good book on the history of calendars?

christopher hoover skrev: We have the wonderful Dava Sobel book on longitude and Harrison. I'm hoping to find something equally as excellent and accessible on calendars. Can anyone recommend a good book on the development of calendars, ideally from Caesar on? Another book

[time-nuts] ebay for the voltage nuts check item 140286890504

Hi guys, After the discussion here regarding voltage standards I thought I might point you to this ebay auction for two 3456 DMMs, which, as mentioned earlier, are great long term 6.5 digits. Unfortunately I can't bid on these as no international shipping - But I'd rather someone here get

[time-nuts] Home built cesium clocks???

G'day fellow time-nuts. I was just going through some old projects and found my old home-made mass spectrometer. This was a project based on a design from either Scientific American or The Amateur Scientist back in the '60s. I was wondering if anyone here had heard of a similar project for a

Re: [time-nuts] Finally acquired a 5370B

Jim Palfreyman wrote: Hi all, Well getting a second hand 5370B will be no big deal for those of you in the US, but in Australia getting one of these units is very expensive due to rare local availability and cost of postage from the US. I was recently quoted US$350 - more than the unit

Re: [time-nuts] Thunderbolt

Will you be announcing to the group how to order these when they are ready? Rather than add to the flood of requests Thanks Tim ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] means of calibrating/verifying Ru with GPS

Bruce Griffiths wrote: swingbyte wrote: Hi everybody, I mentioned some time ago that I had an Ru 10MHz source and I would like to calibrate it. I have an hp 5335 counter and a Jupiter GPS with 10kHz output. I was wondering if I could use the Ru 10MHz as and external clock

[time-nuts] means of calibrating/verifying Ru with GPS

Hi everybody, I mentioned some time ago that I had an Ru 10MHz source and I would like to calibrate it. I have an hp 5335 counter and a Jupiter GPS with 10kHz output. I was wondering if I could use the Ru 10MHz as and external clock for the 5335 and then measure the frequency of the 10kHz gps

[time-nuts] New Time-nut and his FRK

Thanks for all the suggestions I have a lot to think about - still learning. I bought the FRK for several reasons including wanting a stable calibrated frequency standard - to check my ocxos against. I work in distributed simulation (human-in-the-loop and faster than real-time) and when

[time-nuts] New Time nut FRK-H repair questions

Hi, I've been reading this group for some time now and have recently purchased an Efratom FRK-H unit. Now I need to make it work! I have powered it up and after warmup it draws [EMAIL PROTECTED] I have a 10MHz output sinewave and a lamp voltage of 8.14V. The xtal ctrl voltage is 12.2V and

Re: [time-nuts] New Time nut FRK-H repair questions --- IT Works!!

Thanks for the help - the manual is great. I have trimmed the xtal so the control voltage is around 8.5V. The lock output is working - drops from 1.5V to 0.03 volts when locked. I only have an old HP5340A with OCXO option as my frequency meter. It reads 10.00MHz as the output from the

Re: [time-nuts] OT email problem, this is the only contact I have still working

Phil Staton wrote: Hi Tim (swingbyte) The continuous sends continue even with computer off and ADSL unplugged. I've mailed ISP to see if they can sort it out. I'm getting continuous mail delivery failed: returning message to sender Sorry about all this. Phil

[time-nuts] Where to get Winchester connections for Efratom FRK?

Hi all, Now that I have my FRK working I have to find a connection for it. I believe it is a winchester 20p and I have not been able to find one in Australia yet. Is it worth while looking or should I just replace it with something else or even solder leads to it! As an aside, what resolution

Re: [time-nuts] Digital Scopes - suggestions

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hal Murray wrote: ); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I'm looking for a digital scope. Is there some obvious model(s) that I should keep an eye out for? I don't need one, so I'm