Re: [time-nuts] Low CostTemperature sensor

Even cheaper... Diiode as a cheap sensor ? https://www.arrow.com/en/research-and-events/articles/using-a-simple-diode-as-a-ballpark-temperature-sensor On Tue, Jan 17, 2017 at 4:16 PM, Bill Hawkins wrote: > Perrier, > > Google finds a Siemens NI1000 sensor that follows the

Re: [time-nuts] Seiko watch "leap second enabled"

The watch is fine. Ive intentionally set it to be off time to have it automatically recover with essentially leap second precision. On 21 Jul 2016 3:25 p.m., "Mike Cook" wrote: > While I was googling for reports of other misbehaving GPS chips, I > discovered the existence

Re: [time-nuts] Timelab Query (likely noob error)

mailto:time-nuts-boun...@febo.com] On Behalf Of Jason > Ball > > Sent: Friday, October 23, 2015 10:38 PM > > To: Discussion of precise time and frequency measurement > > Subject: [time-nuts] Timelab Query (likely noob error) > > > > Hi all, > > > > I'm afr

Re: [time-nuts] New Symmetricom 58532A antennas - Launch3

Thank you ;) On Fri, Oct 2, 2015 at 5:19 AM, Gregory Beat wrote: > I received this e-mail earlier today (below) from Launch3. > Launch3 has been selling surplus/overstock cellular/telecom equipment. > They currently have a LARGE supply (~750) of surplus Symmetricom 58532A >

[time-nuts] HP 5372A available in Sydney, Australia

Since its a relevant piece of kit I've included the mail from ARNSW here. Two units are available if anybody is interested. Cheers. HP 5372A and Wave Technologies DTS2070 digital time system. Amateur Radio NSW as for sale two HP 5372A time and interval analysers. Both are working with good

Re: [time-nuts] Has my TBolt gone south ?

Or if your in Australia, a cockatoo. I've had to rerun my coax twice over the past 12 months  On Thu, Aug 13, 2015 at 9:18 AM, William Beam wb...@gci.net wrote: A nearby thunderstorm could have taken out the preamp in the antenna. 73 Bill Beam NL7F - Original Message - From:

Re: [time-nuts] Lab upgrade

The fault was found by somebody with a heck of a lot more experience than yours truly. Turns out the 5v regulator had shorted out, a protection diode did it's thing and popped the fuse protecting the rest of the system. J. On 29 Jul 2015 2:49 am, Robert LaJeunesse lajeune...@mail.com wrote:

Re: [time-nuts] Picked up the Austral 2200A tonight

A lack of precision in that last email from me it seems. I was planning on using a DDS and re-purposed multiplier board to provide the 1.5Ghz LO, but as the time server needs to use the 10MHz signal to compensate for phase shift this won't necessarily work out as you have indicated.The

[time-nuts] Picked up the Austral 2200A tonight

Just picked it up, it has an internal rubidium which piqued my interest as worst case I could cannibalize the unit. It's also been sitting on a shelf for 10 years so the oscillator should hopefully have some life left in it. What does surprise me is the firmware is dated 25th August 1998, I was

Re: [time-nuts] Lab upgrade

Ok - not so bad. One of the 250v 5Amp inside the case blew on the 10v line. Now to work out why... J. On Sun, Jul 26, 2015 at 1:05 PM, Jason Ball ja...@ball.net wrote: Recently I've been on the hunt for test gear so facilitate moving up into the microwave bands (ham radio), accurate

[time-nuts] Austron 2010B useful in Australia/Sydney at all ?

I can pick one up in excellent condition for a reasonably low price... but only if it could be useful. J. -- -- Teach your kids Science, or somebody else will :/ ja...@ball.net vk2...@google.com vk2f...@google.com callsign: vk2vjb ___ time-nuts

Re: [time-nuts] Lab upgrade

Thanks for that Bob. From the circuit diagram the path to ground appears to be on either the 3v the 5v lines that are fed via this fuse. When I disconnect the power supply from the rest of the system the fuse doesn't blow which suggests the fault is in the logic board, of course it could simply

Re: [time-nuts] Austron 2010B useful in Australia/Sydney at all ?

I've decided to pick up this unit as it is in really nice condition and inexpensive. I'll see if I can pickup the e-loran signals on my ham kit over that weekend to see if there is any point, failing that another member of time buts may be interested. J On Mon, Jul 27, 2015 at 9:27 AM, Jason

[time-nuts] Lab upgrade

Recently I've been on the hunt for test gear so facilitate moving up into the microwave bands (ham radio), accurate timing being one of the basics to be sorted. As part of this I've recently acquired a HP 5335A with OCXO and HP5350B microwave frequency counter, both picked up today. I've setup

[time-nuts] Austron 2200A

While I may be counting chickens, I'm likely to take delivery of an Austron 2200A in the next week. Somewhat predictably the antenna isn't included and I've seen the extensive thread from this mailing list circa 2007 where the thread seemed to peter out at the end. Worst case I could probably

Re: [time-nuts] 10MHz Square to Sine Wave Conversion

A would have thought a simple band pass filter would do the job by tuning out the harmonics. On Fri, Jul 17, 2015 at 3:49 AM, skipp Isaham via time-nuts time-nuts@febo.com wrote: re: 10MHz Square to Sine Wave Conversion The GPSDO I recently acquired outputs a 10 MHz square wave. I'd like to

Re: [time-nuts] New wrist watch

I did much the same thing, but settled on the Seiko astron due to the lack of LF time sync in Sydney. GPS for the win and satisfying the closet horologist in me. J On 7 Jul 2015 3:22 pm, D W watsondani...@gmail.com wrote: With my new found interest in time nuttiness I thought I should upgrade

Re: [time-nuts] Time in a cave

If you don't require an accurate external sync (GPS), one options is to use solarflare 10GB NIC's with the high resolution clock on board, using this clock to govern the PC clock.Running PTP through this can yield +-250ns synchronisation between the nodes due to the hardware implementation for

[time-nuts] Hi all

I should drop an email rather than just lurking on this extremely interesting list. I'm in the process of building my first GPSDO, so I have lots to learn and am enjoying the education. This list has been a real eye opener for me. I'm a licensed amateur radio operator looking to move up into

Re: [time-nuts] Oscilloquartz 3210 Cesium Standard

Replacing the caps could have increased voltages and exposed a fault that caused the caps to fail... As always step 1 - check voltages/regulators. Remove bridging components (diodes, power resistors) if necessary to stop the smoke and trace the circuit as any number of components could have

Re: [time-nuts] Poor Mans TIC (Using Beaglebone onboard PRU)

This is interesting. Im in the process of building my first GPSDO, it would be interesting to use the PRU to monitor and validate that device, obviously to the limit of the PRU's accuracy. I have several BBB's sitting here waiting for a project. On Sat, Sep 6, 2014 at 7:14 AM, paul swed

Re: [time-nuts] Ublox neo-7M GPS

I have a dozen ublox max-7's on hand and should have suitable PCB's for the analysis in a couple of days. Unfortunately I don't have the analyser, the test kit is currently limited to a HP5834A recently calibrated to Rb and a 100MHz DSO so probably not what your looking for. Let me know if I