[time-nuts] 5335a opt 40

[Lizeth Norman]

Who wants a scanned copy of the manual?
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Re: [time-nuts] 5335a opt 40

[Lizeth Norman]

Hosting manuals is a non starter. Past history says it's easy to have
an individual steal this sort of thing for fun and profit, or just
remove the credit.

This is free. As in air.

On Mon, Jan 18, 2016 at 7:24 AM, Attila Kinali <att...@kinali.ch> wrote:
> On Sun, 17 Jan 2016 15:02:43 -0500
> Lizeth Norman <normanliz...@gmail.com> wrote:
>
>> Who wants a scanned copy of the manual?
>
> I think the best would be to upload it to Didier's manual site:
> http://www.ko4bb.com/getsimple/index.php?id=manuals
>
> Attila Kinali
>
> --
> It is upon moral qualities that a society is ultimately founded. All
> the prosperity and technological sophistication in the world is of no
> use without that foundation.
>  -- Miss Matheson, The Diamond Age, Neil Stephenson
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Re: [time-nuts] New Member + Basic Questions

[Lizeth Norman]

Spend reasonable money. Learn, ask questions, rinse and repeat. It's
how a mountain of stuff followed me home. Wife is cool with it.

Electrical fires are a learning experience. Try not to repeat those.

On Sun, Jan 10, 2016 at 1:25 PM, Nathan Johnson  wrote:
> Hello All,
> I'm a ham radio operator, for just a few years, and electronics nut for many
> more. I have been reading the archives and trying to learn a bit. I am
> wanting
> to develop an accurate frequency standard for "lab" and radio use. I see
> that I
> have 3 basic options that are possible on my budget, a decent OCXO-based
> device,
> a rubidium standard, and a GPSDO. My current uses are to supply accurate
> timing
> to a signal generator(not yet purchased, HP 8640/8650-something) and a
> frequency
> counter(Fluke 1953), mostly used in aligning radios.
> In the near future I am hoping to expand that to a homebrew HF
> transceiver(probably clocking a DDS chip of some sort), and some higher
> frequency(possibly up to 10GHz) transverters.
> So what I have learned so far about each option:
> -OCXO is probably stable enough for what I am trying to do, but by itself
> provides no guarantee of absolute accuracy(I'm looking at the microwave
> operators "weapon of choice", the Isotemp 134-10), has an adjustment pin for
> a
> tuning voltage, but no idea what an appropriate value is for that voltage
> without access to a more accurate standard. I will probably build an OCXO
> device
> of some kind anyway as an interim measure while I earn for the money to
> obtain
> something better, and to validate a distribution amp within the lab etc.
> -Rubidium Standard seems like a very nice idea, but it's still not traceable
> in
> terms of absolute accuracy(although the adjustment range of the available
> standards appears to be several orders of magnitude better than I am likely
> to
> need). The available standards are being re-imported from China, with
> unknown
> hours or life remaining, and in some cases unknown condition. They appear to
> be
> power hogs. A $200 gamble.
> -GPSDOs have many options available, and are referenced to primary
> standards.
> Pretty sure this is where I want to go. I'm looking at Item# 231803015799 on
> the
> usual auction site, and this seems to be everything I need? I also looked at
> item# 111514491254, but there doesn't seem to be any documentation about
> what's
> inside.
> Am I missing key points here? Or am I headed on the right path? Appriciate
> any
> and all input.
> Nathan KK4REY
>
> Sent using CloudMagic Email
> [https://cloudmagic.com/k/d/mailapp?ct=pi=7.4.15=9.1=email_footer_2]
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Re: [time-nuts] NTBW50AA Problem

[Lizeth Norman]

Can you attach another gps reciever to the coax and confirm it's a
receiver issue?
Can you test coax with a load on one end and a antenna analzyer at the
other to ensure performance at some reasonable value (432 MHz)?
RG-59 (solid core) can do some odd stuff.
73 from el89va
n3ykf

On Fri, Jan 8, 2016 at 8:49 PM, Michael Bauer  wrote:
> My subj Nortel Trimble GPSTM had been working well for about two years.
> Changed QTH by about 20 miles, reconnected with same power supply, coax and
> antenna.  Cannot see any GPS satellites or 10 mHz output (9.8MHz on 8X Chip
> is present and front panel LEDs show the unit responding to software
> commands as before).
>
> Lady Heather and tboltmon both report ROM, RAM, OSC, POWER, EEPROM and
> ANTENNA OK thru RS-232 interface.  Replaced bullet antenna anyway - no
> change.  5VDC present at antenna and it draws about 33 mA.  Other local GPS
> devices (two vehicles and one EarthMate) achieve 3D fixes from ground level
> antennas.  Performed warm, cold and hard resets (erasing former GPS
> position), min elevation set at 15 degrees.  Survey starts, but doesn't
> proceed.  All eight satellite status lines show yellow and zero's across.
> Undisciplined, No GPS time, no Posn.  Start date is reported as 07 April
> 2019 week 2048.
>
> The unit performed flawlessly at previous QTH frequently showing good
> signals from 7-8 GPS satellites.  What happened?  Do I have a broken box
> that cannot be detected by software control/reporting programs?
>
> Thanks in advance for any ideas.
>
> 73,
>
> Mike - W7GW
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Re: [time-nuts] Anybody who can record last Loran-C transmissions ?

[Lizeth Norman]

Had I known a trip to EU would have been in order. Going for a ham
radio vacation anyway. 8R satellite.
The radio (B210) runs with either of the I7 laptops that are here.

As you point out, making sure that the bus speed and devices are
compatible is key.

The B210 is a "development board" so to speak for the AD 9361. Fun
stuff. Always wondered what the vector calculus would be useful for.



On Sat, Dec 19, 2015 at 11:05 PM, Bill Byrom <t...@radio.sent.com> wrote:
> The Tektronix RSA306 9 kHz - 6.2 GHz RF signal analyzer samples the IF
> at 112 MS/s (14 bit A/D), so it streams data over USB 3 at 224 MB/sec. A
> PC with an I7 (or even a good I5) and a modern solid state hard drive
> can keep up with this streaming data and store hundreds of GB of
> contiguous streaming samples. These can be read back with the SignalVu-
> PC application (base version is free, but option is required for
> playback) and analyzed as I/Q data (contiguous spectrograms over up to 1
> second, export to Matlab, etc.).
>
> Unfortunately, I'm in Texas so I can't receive these transmissions from
> Europe. ;)
> --
> Bill Byrom N5BB
>
> On Sat, Dec 19, 2015, at 05:10 PM, Lizeth Norman wrote:
>> That's what I said. 61.44MS/s. This thing is a fire hose.
>> Saturate a usb 3.1 without much problem.
>> Gotta love computing!
>>
>> On Sat, Dec 19, 2015 at 5:01 PM, Poul-Henning Kamp <p...@phk.freebsd.dk>
>> wrote:
>>> 
>>> In message <5675ac3c.8020...@aei.ca>, Graham writes:
>>>
>>>> Would you be able to record what you want via the online web SDR at the
>>>> Twente University?
>>>
>>> Not really.  That would only give a water-fall.
>>>
>>> What I think should be preserved is the actual raw, unadultered signal on 
>>> air.
>>>
>>>
>>> --
>>> Poul-Henning Kamp   | UNIX since Zilog Zeus 3.20
>>> p...@freebsd.org | TCP/IP since RFC 956
>>> FreeBSD committer   | BSD since 4.3-tahoe
>>> Never attribute to malice what can adequately be explained by incompetence.
>>> _
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Re: [time-nuts] Anybody who can record last Loran-C transmissions ?

[Lizeth Norman]

That's what I said. 61.44MS/s. This thing is a fire hose.
Saturate a usb 3.1 without much problem.
Gotta love computing!

On Sat, Dec 19, 2015 at 5:01 PM, Poul-Henning Kamp  wrote:
> 
> In message <5675ac3c.8020...@aei.ca>, Graham writes:
>
>>Would you be able to record what you want via the online web SDR at the
>>Twente University?
>
> Not really.  That would only give a water-fall.
>
> What I think should be preserved is the actual raw, unadultered signal on air.
>
>
> --
> Poul-Henning Kamp   | UNIX since Zilog Zeus 3.20
> p...@freebsd.org | TCP/IP since RFC 956
> FreeBSD committer   | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
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Re: [time-nuts] Anybody who can record last Loran-C transmissions ?

[Lizeth Norman]

Too bad my vacation takes me south of the border for satellite operations..
Bought an Ettus B210 to play with.
mix, filter and sample!

On Sat, Dec 19, 2015 at 7:30 AM, Poul-Henning Kamp  wrote:
> 
> In message <56753e8d.8090...@rubidium.dyndns.org>, Magnus Danielson writes:
>
>>Nice idea. An SDR with the HF mod would probably be the simplest way to
>>do it. As the Loran-C stations lay on top of each other, using a
>>multi-station Loran-C receiver in parallel would be nice. The 8000 chain
>>should suddenly be quite alone.
>
> Yes.  It will be interesting to see if that makes it usable.
>
>
> --
> Poul-Henning Kamp   | UNIX since Zilog Zeus 3.20
> p...@freebsd.org | TCP/IP since RFC 956
> FreeBSD committer   | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
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Re: [time-nuts] Celestial Navigation instruction being reinstated in the US Navy

[Lizeth Norman]

Nothing beats an E6-B on your wrist. Lots of people have them. Very
few of them know. Great way to have fun at a dinner party.
"Pardon me madam: That's an elegant slide rule you have!"

On Mon, Oct 26, 2015 at 9:23 PM, Graham / KE9H  wrote:
> Both the sextant and the slide rule will still function after an EMP event.
> Not much other electronic stuff will.
> --- Graham / KE9H
>
> ==
>
> On Mon, Oct 26, 2015 at 4:20 PM, paul swed  wrote:
>
>> Crazy bit of humor/timing in all of this I guess.
>>
>> Oddly at the last MIT flea I picked up a very nice astro-compass including
>> case and manual. Also a news clipping that the Navy was restarting training
>> on celestial navigation. Now I just need to add a mount to the car dash
>> board.
>> All prepared for the day the Glenda GPS fails.
>>
>> By the way if its celestial navigation, next will be slide rules. Pretty
>> hard to tamper with them. The only virus they get are cold.
>> Regards
>> Paul
>> WB8TSL
>> Sorry really going astray here.
>>
>> On Mon, Oct 26, 2015 at 12:52 PM, Scott McGrath 
>> wrote:
>>
>> > Or with the appropriate filters you can shoot the sun with a sextant like
>> > the old time Mariners did
>> > I still have a sextant and still use it along with a copy of Bowditch
>> >
>> > Content by Scott
>> > Typos by Siri
>> >
>> > > On Oct 26, 2015, at 9:13 AM, Jim Lux  wrote:
>> > >
>> > >> On 10/25/15 9:37 AM, jim s wrote:
>> > >>
>> > >> Somewhat time related.  The Navy realizes that GPS might not always
>> > >> work.  I don't imagine that aircraft in the US Air Force will be able
>> to
>> > >> do this very reliably, and the article doesn't mention that service.
>> I'm
>> > >> guessing that a lot of strategic Air Force aircraft have star trackers
>> > >> that will work some of the time w/o GPS (at night).
>> > >
>> > > There's an excellent set of CD-ROMs with about 50 papers on celestial
>> > nav and time keeping from the Institute of Navigation.
>> > >
>> > > https://www.ion.org/publications/upload/CelestialNavTOC.pdf
>> > >
>> > > Papers in there about all manner of star trackers and celestial nav,
>> > from prehistory through the Renaissance era, to modern computerized
>> > celestial nav boxes, etc.
>> > >
>> > > $50, as I recall.
>> > >
>> > > Celestial nav during the daytime isn't all that hard, if you have a
>> > suitable telescope.  With a 28x telescope on a theodolite, you can see
>> > Polaris, for instance.  The trick is in finding it first.
>> > >
>> > >
>> > >
>> > >>
>> >
>> http://www.latimes.com/nation/la-na-celestial-navigation-20151025-story.html
>> > >>
>> > >>
>> > >> Thanks
>> > >> Jim
>> > >> ___
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Re: [time-nuts] New Symmetricom 58532A antennas - Launch3

[Lizeth Norman]

Ordered 3. Price break on 5 is $20 apice versus 25$
Happy nuttery!

On Fri, Oct 2, 2015 at 9:01 AM, Steve  wrote:
> The Symmetricom data sheet mentions the Option AUB antenna mast. What is
> that? I don't find details of it. How does you mount the 58532A antenna if
> the Option AUB mast is not available?
>
> Steve, K8JQ
>
>
> On 10/1/2015 3:19 PM, 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
>> antennas.
>>
>> Symmetricom 58532A GPS Antenna -- Datasheet
>> http://www.microsemi.com/document-portal/doc_view/133381-58532a
>>
>> I acquired one of these antennas 2 weeks ago, they are brand new in box.
>> My 58532A antenna is currently connected to a Symmetricom/Datum TS2100 GPS
>> w/Heol N024 receiver upgrade.
>>
>> Check their web site and contact them (web page info), with number you
>> desire,
>> so they can determined shipping charges.
>>
>> Greg
>> w9gb
>> 
>> From: Launch3
>>
>> Hello
>>   You previously purchased or inquired about the Symmetricom 58532A GPS
>> Antennas, we are currently liquating all 750 of them.
>> They are all New in Box and the price is $25 each + Shipping
>>
>> Link to the part -  https://www.launch3telecom.com/symmetricom/58532a.html
>>   Launch3Telecom.com
>> Launch3Services.com
>> 27 Daniel Rd.
>> Fairfield, New Jersey 07004
>>
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[time-nuts] trade: Symmetricom two port L1 dist amp for L1 lightening arrestor

[Lizeth Norman]

Title says it all.
Post me direct, please.
Thanks,
Norm n3ykf
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Re: [time-nuts] Microsemi versus Spetracom

[Lizeth Norman]

Be aware that the early TS2100's have different (SV6) gps receivers
than the later (ACE III) ones. Both speak TSIP, but some of the
commands are different.

Mine went to the boneyard a few months ago.


On Wed, May 6, 2015 at 9:28 PM, Sean Gallagher s...@wetstonetech.com wrote:


 It's possible that the Heol Design Trimble III replacement cards (N014  
 N024) will correct the 1995 issue. They are sending my company a couple now 
 for us to test in a trusted time infrastructure which includes 2 TS2100's. 
 Unfortunately they were not able to get a straight answer from Trimble so 
 experimenting seems to be the only way to find out.


 Senr from my Verizon Wireless 4G LTE smartphone

  Original message 
 From: Andrew Cooper acoo...@keck.hawaii.edu
 Date: 05/06/2015  15:58  (GMT-05:00)
 To: time-nuts@febo.com
 Subject: [time-nuts] Microsemi versus Spetracom

 So, yes, our old TS2100's suffered the 1995 bug over the weekend like all of 
 the others in the world.  Kludged into working for the moment using 1PPS and 
 two units.

 I do need to buy a couple replacements, good time is critical around an 
 observatory, looking at a $16K purchase order.  We have quoted both the 
 SecureSync from SpectraCom and the S350 from Microsemi, both fully spec'd out 
 with IRIG and IEEE1588.

 I am not really a time expert, just an everyday electrical engineer.  Thrust 
 into the problem three days ago.  I have learned a bit reading through the 
 Time Nuts archive... Thanks!

 Anything I should be aware of with these units.  Any opinions on this 
 purchase?

 Thanks for your advice,
 Andrew

 Andrew Cooper
 Electrical Engineer
 W. M. Keck Observatory
 808-881-3862
 mailto:acoo...@keck.hawaii.edu

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Re: [time-nuts] Which First GPSDO to buy?

[Lizeth Norman]

I second the build it yourself comment. GPS receivers and steerable
oscillators are cheep on the bay. Steep learning curve, however, the
ideas carry over to many, many other things.

There are certainly more stable/accurate ways to do it. Spending money
is not always the best idea at first, at least if you're interested in
why. Later, when I understood more about the nuts and bolts, valuing a
particular buy is easier.

Do have fun. This stuff is a gas. Beware, if you're a pack rat, it's
an acquisitive hobby.

Norm n3ykf

On Sat, Dec 13, 2014 at 5:30 AM, Neil Schroeder gign...@gmail.com wrote:
 In a relative newcomer to this intense of a crowd :-).  But j also found
 that I'm not quite  instrumented (yet) to tackle the accuracy problem.  As
 such Im focusing where i can  on what I know (power, systems, the like)
 while I accumulate the other gear.

 As such I can say the thunderbolt and now the lte lite have been rock
 solid.

 On Friday, December 12, 2014, Anthony Roby ar...@antamy.com wrote:

 I'm in the same beginners' category as you.  I'd do more but have other
 projects on the go and have found I would need more equipment (GPIB
 interfaces, a spectrum analyzer etc) to get much further.  That said, I
 like the Lucent KS24361 and have a few bits and pieces on order to tap into
 J8 on the board of REF-1 and double the 5MHz for use in the lab.  I picked
 up a decent antenna on eBay, it's probably not in an ideal spot but that
 was a tradeoff between aesthetics on the house / access to pull a coax down
 to the basement / height of my ladder, and it seems to work fine.  Power
 supply was also auction-sourced for less than $20 and runs nicely.  I think
 eventually I'll make a panel and install the unit in my basement rack.

 I have no need for the time-nuts accuracy, but I have to say I've found
 this whole area fascinating and have learned a ton over the past couple of
 months toying around with this stuff and absorbing the expertise from the
 group here.

 Anthony

 -Original Message-
 From: time-nuts [mailto:time-nuts-boun...@febo.com javascript:;] On
 Behalf Of Hal Murray
 Sent: Friday, December 12, 2014 6:49 PM
 To: Discussion of precise time and frequency measurement
 Cc: hmur...@megapathdsl.net javascript:;
 Subject: Re: [time-nuts] Which First GPSDO to buy?



 kc0...@gmail.com javascript:; said:
  For a newcomer to this field, which GPSDO would be better to purchase
  as  a first-time acquisition: ...

 I'd suggest the Lucent KS24361.  Lots of people here have them so it will
 be easy to get advice.


 Aside from the GPSDO, you also need a power supply and antenna, and coax to
 get to the antenna.  It will work a lot better if the antenna is in a good
 location.  GPS is 1.5 GHz, so you have to pay attention to loss in the
 coax.


 --
 These are my opinions.  I hate spam.



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Re: [time-nuts] Anybody have experience with TimeMachines TM1000AGPS Time Server

[Lizeth Norman]

Rick,
NMEA 0138 is a standard language. Yes it does output the signal
strength and visible sats, although I don't remember which output
sentences give that data.
I haven't looked at the serial output, so I don't know which sentences
are supported. Probably good to look at the documentation  for the gps
chip.
Norm n3ykf


On Mon, Nov 10, 2014 at 12:54 AM, Rick Thomas rbtho...@pobox.com wrote:
 Hi Lizeth,

 I’ve noticed that it’s very quick to come to a preliminary lock — though the 
 lock is often exactly 1.000 sec off for 5-10 minutes.  Eventually that fixes 
 itself.

 Do you know if the NMEA output (once enabled, and once there is a listener to 
 record it) would tell which satellites are visible and at what signal 
 strength?

 Mine is also just for home use for the time being.  I’m planning to get 
 another one for use at the community radio station I volunteer at.

 They are cheap enough that, with a grant from e.g. the NSF, we could get a 
 bunch of them and scatter them all over the Internet.  With enough of them 
 and some open software for monitoring, we could map one-way (as opposed to 
 round-trip) times on various Internet routes — thus giving some hard data on 
 route asymmetry.  This might prove to be interesting or even useful in 
 diagnosing problems.

 Just a thought…

 Rick

 On Nov 9, 2014, at 2:07 PM, Lizeth Norman normanliz...@gmail.com wrote:

 Reading the manual, (page 8) the device can be set up to output NMEA
 over the serial port. There are a few different pieces of code to
 display that data.
 Have had mine two weeks. It got gps lock before I could point the
 browser at it's ip.
 Just syncing a bunch of cameras as well being the house time standard.

 On Sun, Nov 9, 2014 at 4:49 PM, Rick Thomas rbtho...@pobox.com wrote:

 Right.  I did the reset to factory defaults jumper thing and it came back 
 to life.  I’m using it now with the default setup.

 I got a reply from somebody named Doug at css-timemachines suggesting that 
 I use a different browser (I had been using Safari on my desktop Mac) so I 
 switched to Chrome (still on the Mac) and now it seems to be a bit more 
 friendly.

 In particular, it reports:

 Signal Strength: Satellite 1: 32 dB, Satellite 2: 31 dB, Satellite 3: 
 30 dB

 Can anybody tell if that’s good or bad?  I have the antenna taped up 
 against a window with a good view of the sky to the North-East: not too 
 many trees in the way of a clear view out over the ocean — but somewhat 
 occluded to the North-West: a low tree-covered ridge up to about 15 degrees 
 above the horizon — and the bulk of the house in the way to the South.  Is 
 there a better way?

 I’ll report here as I explore further over the next week.

 Rick

 On Nov 9, 2014, at 2:21 AM, David C. Partridge 
 david.partri...@perdrix.co.uk wrote:

 If you’re referring to this:

 I think he’s referring to section 4.3 Resetting to Factory Defaults

 You also have to reboot after a PW change ...

 Regards,
 David Partridge

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Re: [time-nuts] Anybody have experience with TimeMachines TM1000AGPS Time Server

[Lizeth Norman]

Reading the manual, (page 8) the device can be set up to output NMEA
over the serial port. There are a few different pieces of code to
display that data.
Have had mine two weeks. It got gps lock before I could point the
browser at it's ip.
Just syncing a bunch of cameras as well being the house time standard.

On Sun, Nov 9, 2014 at 4:49 PM, Rick Thomas rbtho...@pobox.com wrote:

 Right.  I did the reset to factory defaults jumper thing and it came back to 
 life.  I’m using it now with the default setup.

 I got a reply from somebody named Doug at css-timemachines suggesting that I 
 use a different browser (I had been using Safari on my desktop Mac) so I 
 switched to Chrome (still on the Mac) and now it seems to be a bit more 
 friendly.

 In particular, it reports:

  Signal Strength: Satellite 1: 32 dB, Satellite 2: 31 dB, Satellite 3: 30 
 dB

 Can anybody tell if that’s good or bad?  I have the antenna taped up against 
 a window with a good view of the sky to the North-East: not too many trees in 
 the way of a clear view out over the ocean — but somewhat occluded to the 
 North-West: a low tree-covered ridge up to about 15 degrees above the horizon 
 — and the bulk of the house in the way to the South.  Is there a better way?

 I’ll report here as I explore further over the next week.

 Rick

 On Nov 9, 2014, at 2:21 AM, David C. Partridge 
 david.partri...@perdrix.co.uk wrote:

 If you’re referring to this:

 I think he’s referring to section 4.3 Resetting to Factory Defaults

 You also have to reboot after a PW change ...

 Regards,
 David Partridge

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[time-nuts] wtb:Trimble svee6

[Lizeth Norman]

Title says it all. Need it for a Datum ts2100. The command set is different
between the svee6 and the ACEIII.
Norm n3ykf
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Re: [time-nuts] Datum ts2100 gps error code 41: New clone ace III

[Lizeth Norman]

Hal,
I may take you up on that. However, looking through the manual, it appears
that not all of that type/firmware support WRNO. Supposedly, based on my
digging, early ones did not, the later ones did.
Next step is to ensure that the number formatting output by the new clone
corresponds to the output of the sveesix. I'm curious, based on the fact
that the polled messages work (firmware and satellite id\signal strength)
and what I would assume as  broadcast or standard TSIP messages do not.
Norm n3ykf


On Sat, Jul 26, 2014 at 4:14 AM, Hal Murray hmur...@megapathdsl.net wrote:


 normanliz...@gmail.com said:
  Turns out that the original receiver was a svee6.

 Let me know if you want a real SVee6.  I've got 2 left.  :)

 ---

 I also have a pair of small boards that I don't have any info on.

 PCB says Trimble,  39818-00-C.  The 00 is written in by hand.
 There is a big chip on the bottom that says Trimble.  144 quad flatpack.
 It's got more stuff on the chip, but I can't read it.

 The top has 2 big chips.  One has a sticker: 39942-00
 I'm guessing a CPU and ROM.  The chip I'm calling
 a CPU has a MX logo.  44 pin PLCC.

 A can looks like a crystal/osc: 12.504

 The PCB is (close to) 3 1/4 x 1 7/8.

 Anybody recognize that?



 --
 These are my opinions.  I hate spam.



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Re: [time-nuts] Datum ts2100 gps error code 41: New clone ace III

[Lizeth Norman]

Jason,
The time on the front panel of the instrument, at power on, shows Jan 1,
2014.
As you say, the gps health menu choice functions sometimes like you state,
other times I get error 41. I do also get the firmware and satellite
information.
Neither the Tracking or Lock led's illuminate.
Norm


On Fri, Jul 25, 2014 at 11:06 AM, Jason Rabel ja...@extremeoverclocking.com
 wrote:

 The GPS Health menu choice never really did anything. It will always
 say Doing position fixes, error code: 1. However, the GPS Firmware and
 Signal Strength menus should report back proper information.

 Can you elaborate on it does not set the right time? Is it some random
 time, or is it off by some fixed general offset (like 1 hour)?

 Do the Tracking  Lock LEDs light up with the new receiver?



  Hi all!
  Have a Datum ts2100 that had a failed gps receiver. Found a replacement
 as
  a new clone. The ts2100 with the new receiver does not set the right
  time, however, it does know where it is, reports the gps firmware
 version
  and gives satellite information. Prior to this, the only message that I
  could get regarding the gps receiver was gps engine busy. The ts2100
  never illuminates the lock or tracking led's on the front panel.
  When checking the menu available from the front panel, in the timing
  section, at the gps health prompt, the ts2100 reports the error gps
  doing fixes error code 41
  A google search reveals absolutely nothing.
  Norm n3ykf

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Re: [time-nuts] Datum ts2100 gps error code 41: New clone ace III

[Lizeth Norman]

Jason,
If the device (gps) reports the firmware and satellites correctly (to the
ts 2100), I would assume so.
No other reasonable explanation exists.
Turns out that the original receiver was a svee6. Found the manual for the
gps and am comparing the default messages with the ace III.
Norm


On Fri, Jul 25, 2014 at 5:45 PM, Jason Rabel ja...@extremeoverclocking.com
wrote:

 Are you sure your GPS module has the correct settings of 9600 8-O-1 TSIP
 IN  TSIP OUT?



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[time-nuts] Datum ts2100 gps error code 41: New clone ace III

[Lizeth Norman]

Hi all!
Have a Datum ts2100 that had a failed gps receiver. Found a replacement as
a new clone. The ts2100 with the new receiver does not set the right
time, however, it does know where it is, reports the gps firmware version
and gives satellite information. Prior to this, the only message that I
could get regarding the gps receiver was gps engine busy. The ts2100
never illuminates the lock or tracking led's on the front panel.
When checking the menu available from the front panel, in the timing
section, at the gps health prompt, the ts2100 reports the error gps
doing fixes error code 41
A google search reveals absolutely nothing.
Norm n3ykf
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Re: [time-nuts] Wanted: Ace III gps receiver for Datum TS 2100

[Lizeth Norman]

Jason,
The antenna and gps lights were out on the front panel. I didn't play with
the gps at all. The various messages that can be displayed from the front
panel told me that gps engine busy.
I just sent a payment to the manufacturer of the replacement units. Too bad
you didn't get me an hour earlier.
Oh well.
Norm


On Fri, Jul 11, 2014 at 9:05 AM, Jason Rabel ja...@extremeoverclocking.com
wrote:

 What commands were you trying to send that you got gps engine busy???

 IIRC, some of the commands never got implemented. I'll fire one of mine
 up today and experiment with it to see what kind of output I get when
 it's not tracking anything and such.

 If the clone receiver is crazy expensive, contact me off-list, I might
 have an ACE-II or ACE-III receiver I can find for you.

 A while back I even tried an old SveeSix receiver and those work too in
 the TS2100.


  Sorry if I was muddy. The TS 2100 had an ace gps receiver installed.
 The
  antenna and tracking lights went out a week ago. Just got round to
 checking
  what was the matter. The symptom is that the gps engine always reports
 busy
  when checked via the front panel interface.
  One of the list members pointed me at a clone of the ACE II/III. It's a
 new
  (as opposed to surplus) product, using the Trimble Copernicus chipset.
 I
  sent them an email.
  Norm n3ykf

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[time-nuts] Wanted: Ace III gps receiver for Datum TS 2100

[Lizeth Norman]

Hi all!
My TS 2100 reports gps engine busy all the time. Looking for the Ace III
receiver to fix it.
Thanks,
Norm n3ykf
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Re: [time-nuts] Wanted: Ace III gps receiver for Datum TS 2100

[Lizeth Norman]

Sorry if I was muddy. The TS 2100 had an ace gps receiver installed. The
antenna and tracking lights went out a week ago. Just got round to checking
what was the matter. The symptom is that the gps engine always reports busy
when checked via the front panel interface.
One of the list members pointed me at a clone of the ACE II/III. It's a new
(as opposed to surplus) product, using the Trimble Copernicus chipset. I
sent them an email.
Norm n3ykf




On Fri, Jul 4, 2014 at 11:31 PM, Dale J. Robertson d...@nap-us.com wrote:

 It's unclear whether you already have an aceIII installed and believe it
 needs to be replaced, or, your 2100 does not yet have a GPS receiver and
 you want to do the conversion.
 A good link describing one variation of the 'always busy gps' problem is
 http://ko4bb.com/dokuwiki/doku.php?id=precision_timing:converting_datum_ts2100_to_gps
 .
 This procedure (changing the serial com speed/format to agree with what
 the 2100 expects) fixed my unit. It may fix yours.
 If you do not yet have an AceIII, I may have one but would have to do some
 serious scrounging to find it.

 Dale NV8U


 Sent from my iPad

 On Jul 4, 2014, at 11:07, Lizeth Norman normanliz...@gmail.com wrote:

  Hi all!
  My TS 2100 reports gps engine busy all the time. Looking for the Ace III
  receiver to fix it.
  Thanks,
  Norm n3ykf
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Re: [time-nuts] test after email address change and repost of PRS10 question.

[Lizeth Norman]

Just wanted to say that Gmail has been agonizing lately with their
improvements in that sort of stuff.
Hats off to John. He keeps the digital home fires lit.
Norm n3ykf


On Tue, Jan 28, 2014 at 9:30 AM, Chuck Harris cfhar...@erols.com wrote:

 Time-nuts isn't yahoo.  It is something that John Ackermann
 put together called febo.com.  Febo is one of John's cats.

 Most probably, the OP's email program is set to not display
 emails which appear to originate from his address...

 -Chuck Harris


 Chris Wilson wrote:



  My recent attempts at posting have been all been blocked for some
 reason so I am switching email address in the hope that that corrects it.


  Here is my last one, hoping that it is not a repeat for you guys.


  Hi,
I have just brought my PRS10 out of mothballs and am trying to
 get a good lock to my TBolt 1PPS.
The 1PPS OUT signal from my PRS10 has a very slow rise time, in
 the order of 70ns.  I would be grateful, if anyone here has one on
 their bench, to let me know what theirs is. I can't find any
 specification in the literature.
 Thanks and have a good day.
 Mike




 28/01/2014 11:37

 Hi Mike.

 Both messages (the earlier one from the orange.fr address and this one
 from the sfr.fr address) are showing. If you read the group using
 e-mail just CC the messages you post back to yourself and filter into
 the groups folder. Seems Yahoo changed things (again) recently.

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[time-nuts] Arduinos in time and near space

[Lizeth Norman]

Hi all,
Funny how this topic of the arduino time library comes around. Have been
following your conversations regarding the precise nature of arduino time
(gps time aware)
Is it possible to write (assuming the poor little creature would do it) a
piece of code, that given your lat/long, the time and a two line element
set for an orbiting object, such as the ISS, that would give you the
acquisition of signal time/loss of signal time and so forth?
Am interested in this as part of a balloon project. My part of the payload
would be a small 5w radio with a modem, driven by an arduino. Was thinking
APRS on the high frequency bands, as well as the digipeater on the ISS.
BTW: Had a look at the scheduler in the Arduino Time (official site)
download. Looks like it'd be pretty easy to set up.
Norm n3ykf
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Re: [time-nuts] Arduinos in time and near space

[Lizeth Norman]

Chris,
Thanks for the info on the launchpad. Believe it or not, the problem isn't
power drain, it's keeping the electronics (most importantly the batteries)
at operating temperature when the outside air temperature is -30F or lower.
A thought was to use electric socks or handwarmers and modulate the heat.
One of the last balloons got launched and had great telemetry received. The
team watched as it froze and failed. End of mission.
Norm


On Mon, Jan 20, 2014 at 1:31 AM, Chris Albertson
albertson.ch...@gmail.comwrote:

 On Sun, Jan 19, 2014 at 6:41 PM, Lizeth Norman normanliz...@gmail.com
 wrote:

 
  Is it possible to write (assuming the poor little creature would do it) a
  piece of code, that given your lat/long, the time and a two line element
  set for an orbiting object, such as the ISS, that would give you the
  acquisition of signal time/loss of signal time and so forth?


 The term Arduino now covers a very wis range of computers at are all
 programmed using the same easy to learn system.  You can use the uno whig
 is the standard 16Mhz AVR CPU or now you can swap in a due with is a much
 faster processor.

 But I doubt you would need a lot of CPU power as you are not re-computing
 this at a fast rate.  The Slow AVR chip executes 16 million instructions
 per second.  More than enough for what you want.

 But I think yout would be more concerned with power.  There are far better
 chips that are just as easy to use.   I'd look at TI's MSP430.   It is
 failly powerful and can power down to run in just micro amps (yes uA, not
 mA)  TI sells them on a development board just like the Arduino for $10
 shipped.  That is 1/3rd the price of an official made in Italy Arduno.  The
 MSP430 LauchPad from TI can be programmed with the sme software environment
 as Arduino. Another advantage is that in TI's board after you program
 the prototype the chip is socketed and you can pull it out and run the bare
 chip

 See photo in link below.  There are some jumpers you cn pull then the chip
 is electrically isolated from everything but power, you check it out that
 way than pull the chip from the socket if yu like.
 http://www.ti.com/ww/en/launchpad/launchpads-msp430-msp-exp430g2.html#tabs

 Use this to program the above MSP430.  If you know the Arduino then there
 is zero learning curve.
 http://www.energia.nu

 It will run a long time on AAA batteries.



 --


 Chris Albertson
 Redondo Beach, California
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Re: [time-nuts] Arduinos in time and near space

[Lizeth Norman]

Jim,
No need to point an antenna. Just know when the iss is visible. The arduino
will drive the modem, hence driving the radio.
Do follow you in regards to the matrix approach. Would have to take a
standard two line element set and do some number crunching. Shouldn't be
all that hard.
Norm n3ykf


On Sun, Jan 19, 2014 at 11:03 PM, Jim Lux jim...@earthlink.net wrote:

 On 1/19/14 6:41 PM, Lizeth Norman wrote:

 Hi all,
 Funny how this topic of the arduino time library comes around. Have been
 following your conversations regarding the precise nature of arduino time
 (gps time aware)
 Is it possible to write (assuming the poor little creature would do it) a
 piece of code, that given your lat/long, the time and a two line element
 set for an orbiting object, such as the ISS, that would give you the
 acquisition of signal time/loss of signal time and so forth?


 Of course, and it could easily generate real time look angle (az and el).

 You might want to go with something like a teensy3 rather than an Arduino:
 faster, lower power, a LOT more memory space, and cheaper.


 I don't know that anyone has ported a decent orbit propagator (like SGP4
 from celestrak.com, which is sort of the standard) to the Arduino
 environment.  I don't think it would be all that hard.

 Having done this kind of thing quite a few times now, I would recommend
 you work in XYZ  (either Earth Centered Fixed or Earth Centered Inertial)
 kind of coordinates and do things with matrix computations, rather than
 trying to do the trig solid geometry approach. (e.g. don't use what's in
 the ARRL books).

 ISS is at one XYZ coordinate, you're at another XYZ, so the vector from
 you to ISS is (ISS-You).  The Doppler can be computed from the difference
 in the two velocity vectors.  Look angles are computed by looking at your
 local vertical vector.

 If you need better than 1 degree pointing, you DO need to take into
 account that the earth is not spherical.



  Am interested in this as part of a balloon project. My part of the payload
 would be a small 5w radio with a modem, driven by an arduino. Was thinking
 APRS on the high frequency bands, as well as the digipeater on the ISS.
 BTW: Had a look at the scheduler in the Arduino Time (official site)
 download. Looks like it'd be pretty easy to set up.
 Norm n3ykf
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Re: [time-nuts] EZGPIB Question

[Lizeth Norman]

The programming of the ENET/100 has to be done with an older ver of Labview
(7.1 IIRC), something that has no later than win 2k as an operating system.
I had one of these and went through the setup of the ip address. Once it
worked, it was like a hardware controller. (using LV 8.0)


On Wed, Nov 20, 2013 at 11:32 AM, Dr. David Kirkby drkir...@gmail.comwrote:

 On 20 November 2013 02:35, paul swed paulsw...@gmail.com wrote:
  Don
  A couple of comments. I have the old ethernet 100 also. As I recall it
  would only work up until windows 98 or 2000..

 I don't think that is true

 http://www.ni.com/download/ni-488.2-3.1.2/4360/en/

 supports windows 8 and supports both GPIB-ENET/100
  GPIB-ENET/1000.


 Dave
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Re: [time-nuts] SDR Radio Opinion ?

[Lizeth Norman]

Gents,
These things are limited in usefulness by themselves. They need decent
filtering and preamps for any weak signal stuff.
If all you want to do receive the local channels, then these are for you!
Norm n3ykf

On Mon, Aug 5, 2013 at 5:21 PM, Don Latham d...@montana.com wrote:

 About $85 US. But a TV tuner type is about $24.

 J. Forster
  Has anyone played with this thing?
 
  http://microsat.com.pl/product_info.php?products_id=35
 
  If you add a laptop, is the thing a complete radio? It seems to be far
  too
  cheap to believe.
 
  -John
 
  ===
 
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 --
 “The power of accurate observation is commonly called cynicism by those
 who have not got it.”
 -George Bernard Shaw



 Dr. Don Latham AJ7LL
 Six Mile Systems LLC
 17850 Six Mile Road
 POB 134
 Huson, MT, 59846
 VOX 406-626-4304
 Skype: buffler2
 www.lightningforensics.com
 www.sixmilesystems.com


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Re: [time-nuts] 59503A GPIB clock windows/linux software.

[Lizeth Norman]

The 59309A can be updated via HPIB.
I did it two ways. The first was to use windows system time and then write
to the instrument. The other was to poll a M12+T and get the proper time.
Sadly, both are in Labview, and as such probably aren't much help.

On Sat, Jun 1, 2013 at 4:25 PM, Mark C. Stephens ma...@non-stop.com.auwrote:

 That's the One, a 53509A.

 It is a quarter width 2RU unit (a bit higher with its feet on)
 Has GPIB on rear.
 Set via buttons behind a small hinged flap on the front.
 My 59503A drifts a lot and I seem to remember it wasn't y2K compliant.

 I want to have some software send out a request for time over the HPIB to
 the 59503A.
 If the software reads and finds the 59503A is X amount out from NTP or
 even system time, write back the right time to the 58503A.

 Possible to do it with talk.exe and listen.exe from GPIB toolkit and a
 batch file?

 I'd bet there are some time-nuts with at least one of these GPIB clocks ;)


 -marki


 -Original Message-
 From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
 Behalf Of J. Forster
 Sent: Sunday, 2 June 2013 4:09 AM
 To: Discussion of precise time and frequency measurement
 Subject: Re: [time-nuts] 59503A GPIB clock windows/linux software.

 In the 5950x line there is a display unit. IMO, that would be a lot easier.

 YMMV.

 -John

 ==


  A Man has got to have his toys and I have a HP 59503A GPIB clock...
  Has anyone seen software to maybe sync the clock with an NTP server or
  something :) Windows, Linux, it's all good!
 
  -marki
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Re: [time-nuts] 59503A GPIB clock windows/linux software.

[Lizeth Norman]

Then that's what you'll need. Let me fish around and I'll see what I can
find. The original uses a mathscript node to get the system time.
If you have a M12+t and a serial port that LV recognizes, then the second
is for you.

Norm

On Sat, Jun 1, 2013 at 4:46 PM, Mark C. Stephens ma...@non-stop.com.auwrote:

 I have Labview 8 already installed?

 -Original Message-
 From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
 Behalf Of Lizeth Norman
 Sent: Sunday, 2 June 2013 6:30 AM
 To: Discussion of precise time and frequency measurement
 Subject: Re: [time-nuts] 59503A GPIB clock windows/linux software.

 The 59309A can be updated via HPIB.
 I did it two ways. The first was to use windows system time and then write
 to the instrument. The other was to poll a M12+T and get the proper time.
 Sadly, both are in Labview, and as such probably aren't much help.

 On Sat, Jun 1, 2013 at 4:25 PM, Mark C. Stephens ma...@non-stop.com.au
 wrote:

  That's the One, a 53509A.
 
  It is a quarter width 2RU unit (a bit higher with its feet on) Has
  GPIB on rear.
  Set via buttons behind a small hinged flap on the front.
  My 59503A drifts a lot and I seem to remember it wasn't y2K compliant.
 
  I want to have some software send out a request for time over the HPIB
  to the 59503A.
  If the software reads and finds the 59503A is X amount out from NTP or
  even system time, write back the right time to the 58503A.
 
  Possible to do it with talk.exe and listen.exe from GPIB toolkit and a
  batch file?
 
  I'd bet there are some time-nuts with at least one of these GPIB
  clocks ;)
 
 
  -marki
 
 
  -Original Message-
  From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]
  On Behalf Of J. Forster
  Sent: Sunday, 2 June 2013 4:09 AM
  To: Discussion of precise time and frequency measurement
  Subject: Re: [time-nuts] 59503A GPIB clock windows/linux software.
 
  In the 5950x line there is a display unit. IMO, that would be a lot
 easier.
 
  YMMV.
 
  -John
 
  ==
 
 
   A Man has got to have his toys and I have a HP 59503A GPIB clock...
   Has anyone seen software to maybe sync the clock with an NTP server
   or something :) Windows, Linux, it's all good!
  
   -marki
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Re: [time-nuts] OT - but of interest?

[Lizeth Norman]

Chris and the gang,
This is an ongoing project. See here:
http://amsat-uk.org/2012/12/24/kicksat-1-sprite-amateur-radio-frequencies/

First time the fellow floated the idea on the amsat-bb I thought he was
reaching. The idea has evidentially gained some traction. Makes sense as
one of the list members observed, once there are enough to mesh it
becomes a communications system, rather than a bunch of satellites and
ground stations.

Why not blast a bunch of small tranceivers into orbit? That's exactly what
the phonesats were simulating and are intended to be. Short term,
inexpensive proof of concept. Meant to deorbit.
Norm n3ykf



On Sun, Apr 28, 2013 at 11:22 AM, Chris Albertson albertson.ch...@gmail.com
 wrote:

 No one was talking about literally placing a cell phone in orbit.
 The idea was to design a tiny satellite with about the same cost, size
 and level of sophistication as a cell phone.  For example it would be
 silly to have an LCD screen and a microphone.The reason for this
 was not to save money.  The goal was a communications system that
 could not be shot down or jammed.  And also that could be launched on
 a few hours notice from a set of small mobile launchers.   I liked the
 idea of a self organized switching network

 But no one has seriously done any work on this and it will not get built.

 On Sat, Apr 27, 2013 at 10:09 PM, Daniel Schultz n8...@usa.net wrote:
  Jim Lux wrote:
 
 It's been challenging to find out information like Center of Mass
 position,
 where the other GPS receivers are, etc. (complicated in part because half
 of station is measured in inches/feet, and the other half in meters)
 
  This reminds me of a story I heard about while building the packet module
  power supply for the Russian module of the ISS. Apparently when the
 Russians
  copied the type-N connector blueprints from the west, they used an
 incorrect
  english to metric conversion factor, such that Russian-made type-N
 connectors
  will not mate correctly with US type-N connectors (unless you use
 force). I
  have not personally verified this story, just passing it along for your
  consideration.
 
  On the subject of cell phones in space, since the cost of placing
 anything in
  orbit is approximately equal to the value of an equivalent mass of pure
 gold,
  efforts to do extreme cost reduction at the expense of reliability seem
  misplaced. A $100K Cubesat costs about the same amount to place into
 orbit.
  Getting the cost of the satellite down to a thousand dollars makes little
  sense when it still costs $100K to put that satellite into orbit. If the
  satellite dies early from radiation exposure you wasted the money that
 you
  spent to launch it. And it is unnecessary to adapt terrestrial consumer
  products for satellites when there are other good options to obtain
 components
  engineered for the space environment at reasonable cost. AMSAT has
 decades of
  experience in this area.
 
  Cell phones are consumer devices, exquisitely engineered for mass
 production
  with reasonably high reliability (when used on Earth as intended) at
 minimum
  per unit cost. Consumer electronics is a highly specialized area of
  engineering, but so is space flight hardware. Using consumer electronic
  devices in a space flight environment is a misapplication of engineering
  principles and is destined to be a technological dead-end.
 
  Dan Schultz N8FGV
 
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 --

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 Redondo Beach, California
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Re: [time-nuts] OT - but of interest?

[Lizeth Norman]

Gentlemen,
One of the objects of the phone sat missions is to ensure deorbit for
exactly that reason. (As a matter of fact, it just happened today.) More
than a few of the new cubesats have deployable streamers to accelerate
reentry.

Why not a cloud of 100? Start small. Makes sense and sounds good.
73 de Norm n3ykf

On Sat, Apr 27, 2013 at 7:03 PM, J. Forster j...@quikus.com wrote:

 Putting 100,000 items in space is a non-starter. The existing space trash
 is already a big concern, and there have been seriuous proposals for
 missions to clean it up. An iPhone, travelling at orbital velocity, has a
 lot of kinetic energy!

 There was an uproar years ago when the Westford Needles experiment was
 launched, and those had a known mechanism to de-orbit the things.

 As to tossing one out the docking port, unstabilized objects will tumble.
 The chances of getting a useful picture of the area of interest are small.

 YMMV,

 -John

 ==




  On Sat, Apr 27, 2013 at 9:40 AM, Gregory Muir engineer...@mt.net
 wrote:
 
  I'm curious if they ever have any problem with earth-based commercial
  component
  outgassing clouding the camera optics.
 
  I went to a lecture on the idea of putting a cell phone like object in
  orbit.  The idea was that it should have a cost and size about like a
  phone.   This is very different from a pico-sat (a 4 inch cube)
  because the pico sat costs $100,000 or more and the phone is under
  $500   The idea is that $500 satellites you don't have to care about
  failures.  The plan was to place maybe 100,000 devices in orbit and as
  they fail just launch another 1,000 or so at a time.  The proposal was
  to launch them from a rocket carried under an aircraft.
 
  The goal was an un-jamable world wide data network.  The phones would
  self-organize into a mesh network.   But no one is going to do this.
  But still the question lives on:  What could you do with a iPhone in
  orbit?   One idea was diagnostics.  A big spacecraft like a space
  station of crew capsule headed to mars might toss a few outside so
  they could get photos of the exterior if they suspected a problem or
  if the phone is cheap just to get  snapshot.  But I'd bet a bunch
  they'd use a $100K pico sat for that.
  --
 
  Chris Albertson
  Redondo Beach, California
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Re: [time-nuts] OT: eBay Contact Congress

[Lizeth Norman]

Yup!
Grass roots spamming at it's best.


On Mon, Apr 22, 2013 at 9:13 AM, J. Forster j...@quikus.com wrote:

 Hi,

 I recieved a very odd communication, apparently from eBay, this morning.
 It is a request to contact Congress about sales taxes on internet sales.

 It APPEARS to be genuine, but I'm unconvinced.

 Has anybody else received this email, and is it for real?

 Puzzled,

 -John

 

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Re: [time-nuts] Releasing sources (was Re: Brooks Shera)

[Lizeth Norman]

All u guys that post code to push up your little ego and then don't help
when it sucks need to see a shrink.

Don't want emails, don't post. Keep your bad code in the folder were it
belongs.

There are enough who think they know.

And finally: The code in question is without question buggy.

BTW: I did build Brooks' project and had to send him two emails. One with a
question and the other a thank you.

Have a nice day
Norm n3ykf



On Sun, Mar 31, 2013 at 10:51 AM, Jim Lux jim...@earthlink.net wrote:

 On 3/30/13 2:58 PM, Lizeth Norman wrote:

 What a bunch of hooey. Another so called expert wasted hours of my time
 because he can't be bothered to either note that code is buggy or just
 can't be bothered..
 If you don't want to release it, then don't. If you do and it's a POS,
 Expect emails.



 Let's talk about that wasted hours..

 You had a need.  You had two alternatives:
 1) write the needed code yourself
 2) use something someone else has written.

 Presumably, you figured that #1 has large cost (if it were trivial, you
 wouldn't even start considering #2)..

 The value of satisfying the need is Value(#1)


 So you make a *speculative investment* in trying #2.  It pays off and you
 are ahead of the overall game by Cost(#1)-Cost(#2).  You've just got a
 substantial return on your small investment (you spent Cost(#2) and you got
 Value(#1) in return)  If it doesn't pay off and you've invested Cost(#2)
 without any return.

 This is not wasted.. this is a speculative investment that didn't pay
 off.

 A smart investor might look at the quality of documentation, or at the
 source code, or look for support groups.  Such things sometimes exist and
 make the probability of usefulness go up (In modern terms,the Software
 Reuse Readiness Level is higher).

 Sure, sometimes you invest blind, and find that the program doesn't work
 well, etc., but that's not wasted.  You've basically paid for information.


 Finally, what is a POS for you may not be a POS for other people.  A lot
 of freely released software was written to satisfy a tiny niche need, with
 NO intention that it be used for anything else.  If you want to use it as a
 starting point, fine, but don't come whining when it doesn't happen to do
 what YOU need.

  This is especially true of software written to provide an interface to a
 piece of test gear or equipment, for which the writer has exactly one
 instance.  All they care about is that they can get their counter, timer,
 antenna tuner, or whatever to work.  They have neither the time, money, nor
 inclination, to make the software work for ANY model of that piece of test
 equipment, nor to accommodate all the manufacturing variations.

 Or maybe someone wrote software to extract data from a published source
 for some need, and then the published source changes its format.  The
 extraction software is now broken, but it met the original need, it might
 provide a framework for a future user to modify.

 I don't have a problem with this.

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Re: [time-nuts] Releasing sources (was Re: Brooks Shera)

[Lizeth Norman]

On a positive note, the number of people that have demonstrated the
downright humility to help me has been staggering. Not only with the
basics, but the details as well.
All it takes has been a cogent email. No begging or offer of other.
Said taught me much about smt prototyping. All in one email.
I could go on.


On Sun, Mar 31, 2013 at 1:11 PM, Scott McGrath scmcgr...@gmail.com wrote:

 There are those of us who write code to solve a problem and post it so
 others can use it as is or as a starting point for their own code.

  Has nothing to do with ego boosting has more to do with paying it forward
 for all the snippets of code and diagrams we used in the past to jump start
 our own efforts

 At least in my case I don't have the time to support it other than for my
 own use if others find it useful that's a bonus. But it's free and it's
 value is determined by the user.

 My time has a value and I'm happy to support things when paid either in
 cash or in kind. But I don't work for free.

 If you want support buy commercial packages which include support or offer
 to pay for the things you need.


 Sent from my iPhone

 On Mar 31, 2013, at 11:32 AM, Lizeth Norman normanliz...@gmail.com
 wrote:

  All u guys that post code to push up your little ego and then don't help
  when it sucks need to see a shrink.
 
  Don't want emails, don't post. Keep your bad code in the folder were it
  belongs.
 
  There are enough who think they know.
 
  And finally: The code in question is without question buggy.
 
  BTW: I did build Brooks' project and had to send him two emails. One
 with a
  question and the other a thank you.
 
  Have a nice day
  Norm n3ykf
 
 
 
  On Sun, Mar 31, 2013 at 10:51 AM, Jim Lux jim...@earthlink.net wrote:
 
  On 3/30/13 2:58 PM, Lizeth Norman wrote:
 
  What a bunch of hooey. Another so called expert wasted hours of my time
  because he can't be bothered to either note that code is buggy or just
  can't be bothered..
  If you don't want to release it, then don't. If you do and it's a POS,
  Expect emails.
 
  Let's talk about that wasted hours..
 
  You had a need.  You had two alternatives:
  1) write the needed code yourself
  2) use something someone else has written.
 
  Presumably, you figured that #1 has large cost (if it were trivial, you
  wouldn't even start considering #2)..
 
  The value of satisfying the need is Value(#1)
 
 
  So you make a *speculative investment* in trying #2.  It pays off and
 you
  are ahead of the overall game by Cost(#1)-Cost(#2).  You've just got a
  substantial return on your small investment (you spent Cost(#2) and you
 got
  Value(#1) in return)  If it doesn't pay off and you've invested Cost(#2)
  without any return.
 
  This is not wasted.. this is a speculative investment that didn't pay
  off.
 
  A smart investor might look at the quality of documentation, or at the
  source code, or look for support groups.  Such things sometimes exist
 and
  make the probability of usefulness go up (In modern terms,the Software
  Reuse Readiness Level is higher).
 
  Sure, sometimes you invest blind, and find that the program doesn't work
  well, etc., but that's not wasted.  You've basically paid for
 information.
 
 
  Finally, what is a POS for you may not be a POS for other people.  A lot
  of freely released software was written to satisfy a tiny niche need,
 with
  NO intention that it be used for anything else.  If you want to use it
 as a
  starting point, fine, but don't come whining when it doesn't happen to
 do
  what YOU need.
 
  This is especially true of software written to provide an interface to a
  piece of test gear or equipment, for which the writer has exactly one
  instance.  All they care about is that they can get their counter,
 timer,
  antenna tuner, or whatever to work.  They have neither the time, money,
 nor
  inclination, to make the software work for ANY model of that piece of
 test
  equipment, nor to accommodate all the manufacturing variations.
 
  Or maybe someone wrote software to extract data from a published source
  for some need, and then the published source changes its format.  The
  extraction software is now broken, but it met the original need, it
 might
  provide a framework for a future user to modify.
 
  I don't have a problem with this.
 
  __**_
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Re: [time-nuts] Releasing sources (was Re: Brooks Shera)

[Lizeth Norman]

What a bunch of hooey. Another so called expert wasted hours of my time
because he can't be bothered to either note that code is buggy or just
can't be bothered..
If you don't want to release it, then don't. If you do and it's a POS,
Expect emails.


On Thu, Mar 28, 2013 at 2:16 PM, NeonJohn j...@neon-john.com wrote:



 On 03/25/2013 09:36 AM, Jim Lux wrote:

  One reason is that if one DOES release source, one will wind up
  supporting it, because generally, we all nice people and helpful, and
  it's hard to tell someone no when they send an email asking how to get
  it to compile on Version N+3 when you used version N, etc.  This can be
  a real distraction from whatever else you are doing.

 Boy, you can say that again.  And open source hardware is even worse.  A
 couple of years ago I put up an open source induction heater on my site.
  Everything included - schematics, board layouts, CAD files, theory of
 operation, how to wind the transformer - in short, everything I could
 think of.  There's even a kit available from Fluxeon.com.

 Yet I probably spend an hour a day responding to emails about that
 project.  Approximately 100% of the questions are either answered on my
 site or by a little googling.  It's getting to be enough of a burden
 that I'm considering taking the page down.

 I'm a dedicated supporter of Open Source but this experience has
 tempered my enthusiasm a bit.

  And then there's the folks who argue with you about your implementation
  or coding style.

 Or electrical design style.  I think that the people who want to argue
 design, especially what if I did this? type arguments are more
 tiresome than the software know-it-alls.

 People need to really think and do their Google homework before hitting
 the email button on a project site.

 John


 --
 John DeArmond
 Tellico Plains, Occupied TN
 http://www.fluxeon.com  -- THE source for induction heaters
 http://www.neon-john.com-- email from here
 http://www.johndearmond.com -- Best damned Blog on the net
 PGP key: wwwkeys.pgp.net: BCB68D77
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Re: [time-nuts] Hello and new Project

[Lizeth Norman]

Martin,
You're left with telnet and rs-232. The docs available on the net seem
to indicate it's more trouble to build the cable than to do the
programming.
Norm n3ykf

On Fri, Feb 22, 2013 at 7:17 AM, Martin A Flynn mafl...@theflynn.org wrote:
 This is the low-budget version without the front panel display (TS2100L)


 On 2/21/2013 11:03 PM, Lizeth Norman wrote:

 Use the buttons on the front panel to drill down into the setup menu
 and find the dhcp setting.
 Have fun

 On Thu, Feb 21, 2013 at 10:05 PM, Martin A Flynn mafl...@theflynn.org
 wrote:

 Hi folks,
 I picked up a used TS-2100L for use at a local technology museum. Unit
 powers up, locks, and syncs. (all three front panel LED are green)

 Using wire shark I can see traffic to the device on 192.168.56.99,
 however I
 can't connect to the management page.

 Any suggestions on how to proceed?

 Martin Flynn
 __


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Re: [time-nuts] Hello and new Project

[Lizeth Norman]

Martin,
I don't think that I've ever seen a procedure in the man to reset it.
Do you have the protocol set properly for the various ports? Did you
try pinging at different speeds on startup? The docs suggest you
should get and ascii ? as a prompt.

Can you:
log into the router and find out what ip address this device occupies?
Then ping that ip or open it with a browser?

Norm n3ykf



On Fri, Feb 22, 2013 at 9:10 PM, Martin A Flynn mafl...@theflynn.org wrote:
 Scott,
 Can you point me at the appropriate documentation so I can default the unit?

 Martin

 On 2/22/2013 1:06 PM, Scott McGrath wrote:

 Recommend doing a reset to default and configure as directed there are a
 lot of configurable options which can control access to this box


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Re: [time-nuts] Hello and new Project

[Lizeth Norman]

Use the buttons on the front panel to drill down into the setup menu
and find the dhcp setting.
Have fun

On Thu, Feb 21, 2013 at 10:05 PM, Martin A Flynn mafl...@theflynn.org wrote:
 Hi folks,
 I picked up a used TS-2100L for use at a local technology museum. Unit
 powers up, locks, and syncs. (all three front panel LED are green)

 Using wire shark I can see traffic to the device on 192.168.56.99, however I
 can't connect to the management page.

 Any suggestions on how to proceed?

 Martin Flynn
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Re: [time-nuts] GPS at 60,000 feet

[Lizeth Norman]

What are those folks flying GPS on CubeSats using?

I do believe they roll their own. Did ask Tom Clark K3IO at the
Orlando AMSAT convention this year about the exact topic you gentlemen
are discussing. His comment was that there was only the Scud Rule to
deal with.
Norm n3ykf
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[time-nuts] suggestions for free samples from AD

[Lizeth Norman]

Hi all!
Title says it all. I have to place an order and need to fill up the
sample bag limit.
Suggestions??
73 es HNY de Norm n3ykf

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Re: [time-nuts] suggestions for free samples from AD

[Lizeth Norman]

Bob,
May have a little pull because I want to purchase two dev boards. It's
a few hundred, so they may be persuaded to actually chat with me.
Hence the idea of looking for a few cool parts
Norm

On Sat, Jan 5, 2013 at 3:48 PM, Bob Camp li...@rtty.us wrote:
 Hi

 If you happen to know your local Analog sales guy, he can be a big help in 
 situations like this.

 Bob

 On Jan 5, 2013, at 2:28 PM, Lizeth Norman normanliz...@gmail.com wrote:

 Hi all!
 Title says it all. I have to place an order and need to fill up the
 sample bag limit.
 Suggestions??
 73 es HNY de Norm n3ykf

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Re: [time-nuts] suggestions for free samples from AD

[Lizeth Norman]

Bob,
Tricks like these I need to know about! One I need as a rx unit. The
other is just for testing and verification. Would save a few bux.
Norm

On Sat, Jan 5, 2013 at 4:36 PM, Bob Camp li...@rtty.us wrote:
 Hi

 These days there's a trick where you can borrow things like dev boards. As 
 long as you don't trash them, there's no charge. Often they seem to forget 
 you have them….

 Bob

 On Jan 5, 2013, at 4:29 PM, Lizeth Norman normanliz...@gmail.com wrote:

 Bob,
 May have a little pull because I want to purchase two dev boards. It's
 a few hundred, so they may be persuaded to actually chat with me.
 Hence the idea of looking for a few cool parts
 Norm

 On Sat, Jan 5, 2013 at 3:48 PM, Bob Camp li...@rtty.us wrote:
 Hi

 If you happen to know your local Analog sales guy, he can be a big help in 
 situations like this.

 Bob

 On Jan 5, 2013, at 2:28 PM, Lizeth Norman normanliz...@gmail.com wrote:

 Hi all!
 Title says it all. I have to place an order and need to fill up the
 sample bag limit.
 Suggestions??
 73 es HNY de Norm n3ykf

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Re: [time-nuts] suggestions for free samples from AD

[Lizeth Norman]

David,
I figured since I'd have to pay for dev boards. (around 400 US plus
ship) I might as well as pick up a few freebies! Have a few parts in
mind. Never know what the list might suggest. There is an upper limit
of course!
Never too many toys.
73 de Norm n3ykf

On Sat, Jan 5, 2013 at 5:02 PM, David McGaw n1...@alum.dartmouth.org wrote:
 What do you mean fill up the sample bag limit?  You can request as few
 items as you want.

 David N1HAC



 On 1/5/13 4:54 PM, Lizeth Norman wrote:

 Bob,
 Tricks like these I need to know about! One I need as a rx unit. The
 other is just for testing and verification. Would save a few bux.
 Norm

 On Sat, Jan 5, 2013 at 4:36 PM, Bob Camp li...@rtty.us wrote:

 Hi

 These days there's a trick where you can borrow things like dev boards.
 As long as you don't trash them, there's no charge. Often they seem to
 forget you have them….

 Bob

 On Jan 5, 2013, at 4:29 PM, Lizeth Norman normanliz...@gmail.com wrote:

 Bob,
 May have a little pull because I want to purchase two dev boards. It's
 a few hundred, so they may be persuaded to actually chat with me.
 Hence the idea of looking for a few cool parts
 Norm

 On Sat, Jan 5, 2013 at 3:48 PM, Bob Camp li...@rtty.us wrote:

 Hi

 If you happen to know your local Analog sales guy, he can be a big help
 in situations like this.

 Bob

 On Jan 5, 2013, at 2:28 PM, Lizeth Norman normanliz...@gmail.com
 wrote:

 Hi all!
 Title says it all. I have to place an order and need to fill up the
 sample bag limit.
 Suggestions??
 73 es HNY de Norm n3ykf

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Re: [time-nuts] YIG oscillators

[Lizeth Norman]

Daniel,
Another place to go is KE5FX's site. He's got lots of good info on the
stellex ones as well as controlling them with the rf synthesizer that
can be had on that conspicuous auction place.

I've actually purchased several of these with the thought of using
them to drive the LO port of a dbm so that I can rx at 5.84GHz (as
well as some other freq's)

So did you take the plunge? Buy any toys??
Norm n3ykf

On Fri, Jan 4, 2013 at 9:30 AM, Alan Melia alan.me...@btinternet.com wrote:
 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
 time-nuts@febo.com
 Sent: Friday, January 04, 2013 2:19 PM
 Subject: [time-nuts] YIG oscillators





 Hi, maybe this topic is a bit boundary for this list, but i´ll just ask
 for general directions

 I´ve discovered these wonderfull bits of hardware called YIG (Yttrium
 iron garnet) Oscillators (and filters!) in Ebay. If someone doesn´t know
 what i´m talking about, they are very broadband tunnable oscillators and
 filters. Now, the questions:

 1) Does someone has some good references about them?

 2) Can I get them new from somewere in decent prices or just collect the
 trash from ebay? (as most of our Rubudium, OCXOs, Thunderbolts, etc)

 Thank you for any help...

 Daniel

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Re: [time-nuts] YIG oscillators

[Lizeth Norman]

Double balanced mixer!  Sorry for the silly overuse of abbreviations..
Norm

On Fri, Jan 4, 2013 at 2:10 PM, gary li...@lazygranch.com wrote:
 dbm?



 On 1/4/2013 9:45 AM, Lizeth Norman wrote:


 I've actually purchased several of these with the thought of using
 them to drive the LO port of a dbm so that I can rx at 5.84GHz (as
 well as some other freq's)


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Re: [time-nuts] YIG oscillators

[Lizeth Norman]

Ed,
The files in the zip are of great usefulness!! Thank you very much!
Norm

On Fri, Jan 4, 2013 at 2:50 PM, Bill Powell bill...@bellsouth.net wrote:
 Likely double balanced mixer...


 On Jan 4, 2013, at 2:10 PM, gary li...@lazygranch.com wrote:

 dbm?


 On 1/4/2013 9:45 AM, Lizeth Norman wrote:

 I've actually purchased several of these with the thought of using
 them to drive the LO port of a dbm so that I can rx at 5.84GHz (as
 well as some other freq's)

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Re: [time-nuts] YIG oscillators

[Lizeth Norman]

It's actually for an amateur space downlink, Not quite C band but close!
Various mixers are available on the bay from cheep to the not so cheap.
Thanks for the tip regarding the Norsat LNBF. ! I'll let my fingers do
the walking.
Norm

On Fri, Jan 4, 2013 at 3:12 PM,  li...@lazygranch.com wrote:
 If you need that mixer for a LNBF, I believe that is close to the 
 international C-band. Google around for a Norsat that ends in I. They use 
 it in India.

 -Original Message-
 From: Lizeth Norman normanliz...@gmail.com
 Sender: time-nuts-boun...@febo.com
 Date: Fri, 4 Jan 2013 14:12:55
 To: Discussion of precise time and frequency measurementtime-nuts@febo.com
 Reply-To: Discussion of precise time and frequency measurement
 time-nuts@febo.com
 Subject: Re: [time-nuts] YIG oscillators

 Double balanced mixer!  Sorry for the silly overuse of abbreviations..
 Norm

 On Fri, Jan 4, 2013 at 2:10 PM, gary li...@lazygranch.com wrote:
 dbm?



 On 1/4/2013 9:45 AM, Lizeth Norman wrote:


 I've actually purchased several of these with the thought of using
 them to drive the LO port of a dbm so that I can rx at 5.84GHz (as
 well as some other freq's)


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Re: [time-nuts] New to Time Synching hardware - needing some advice

[Lizeth Norman]

Why not a gpsdo in holdover??

On Thu, Dec 27, 2012 at 12:52 PM, Roy B saska...@hotmail.com wrote:

 Hello

 I am new to time synching hardware but have done Linux NTP so I have a little 
 experience in that but I need some advice for a different project.

 I have a PC running Linux that I would like to have on a stable time with 
 roughly 10 millisecond accuracy however this machine is located in a place 
 where it cant get network, GPS, or radio signals.

 Is there something like an Atomic Clock that I could set to the correct time 
 over radio/gps/network and then take this box to the PC?

 Anything that I have looked at just assumes that you have a continuous 
 outside connection from somewhere.
 Roy

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Re: [time-nuts] Brooks Shera

[Lizeth Norman]

He worked at LANL. Might be other stuff in there...

On Fri, Dec 21, 2012 at 9:15 AM, paul swed paulsw...@gmail.com wrote:
 Bert
 A thought has crossed my mind here.
 His wife can not access his computer.
 If its windows XP or earlier the password is recoverable. I use a boot cd
 that exposes all. Its been helpful.
 Is there a way to reach out and offer help aside from snail mail?
 Would she be open to that help?
 Regards
 Paul

 On Wed, Dec 19, 2012 at 4:03 PM, ewkeh...@aol.com wrote:

 Some how time nuts combined two lines  it is
 Karen Stoll46 Crazy Rabbit  Rd  Santa Fee,  NM   87508


 In a message dated 12/19/2012 3:55:33 P.M. Eastern Standard Time,
 ewkeh...@aol.com writes:


 Brooks Shera has been a major contributor with his GPSDO.   Before Tbolts
 where affordable his QST article for the first time opened  the  door for
 many
 amateurs to precision frequency at an affordable  price. Over the  years I
 build many units. For a year I have tried to  buy his latest version  4.02.
 I
 did not get a response, so last week  I wrote a hardcopy  letter.
 Yesterday I got an answer from his wife  Karen Stoll. She  is not able to
 access his emails.
 Brooks is in  a Memory Care  Unit in a local senior residence, suffering
 from  dementia.
 I think it is appropriate  that those of us that appreciate  his
 contribution take the time to write a  personal note to his wife,  I am
 sure it will
 help her in these difficult times  and maybe seeing  the letters will help
 him
 to.
 Bert  Kehren
 Karen   Stoll46 Crazy Rabbit Rd.
 Santa Fe, NM   87508
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[time-nuts] FS: HP 48gx with cable books and docs

[Lizeth Norman]

Hi all!
My 48gx is up for sale. Included are the following items
db-9 to calculator cable
soft case with writing on it in marker.
user's guide
calculus on the hp 48gx
calculus and precalculus on the 48gx
An easy course in programming the 48gx
The definitive user's guide to the 48g/gx

230 shipped conus. Or make me an offer.
73 de Norm n3ykf

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Re: [time-nuts] FS: HP 48gx with cable books and docs

[Lizeth Norman]

Tom,
Already got yelled at by jra!
Norm
no feelings hurt. I am truly sorry!

On Fri, Dec 14, 2012 at 1:35 PM, Tom Van Baak (lab) t...@leapsecond.com wrote:
 Norm,

 No cross-posting on this list, please. Your email has nothing to do with 
 time/frequency.

 /tvb (iPhone4)

 On Dec 14, 2012, at 10:25 AM, Lizeth Norman normanliz...@gmail.com wrote:

 Hi all!
 My 48gx is up for sale. Included are the following items
 db-9 to calculator cable
 soft case with writing on it in marker.
 user's guide
 calculus on the hp 48gx
 calculus and precalculus on the 48gx
 An easy course in programming the 48gx
 The definitive user's guide to the 48g/gx

 230 shipped conus. Or make me an offer.
 73 de Norm n3ykf

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[time-nuts] For sale: time nuttiness good bits

[Lizeth Norman]

Hi all!
Following pieces excess to my needs:

National Insturments gpib-enet 50$ plus shipping
- serial 35$
Package for gpsdo
Moto m12+t
Built Shera controller. detail pics on request. Working.
10811a-6011
mmcx to n adapter
hp gps splitter 2 port
Non linear systems meter for efc voltage
gps patch antenna
$210 plus shipping.

Norm n3ykf

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Re: [time-nuts] For sale: time nuttiness good bits

[Lizeth Norman]

The gpib-enet has been spoken for.
I'll take offers on the gpsdo kit or parts of it.

On Thu, Dec 13, 2012 at 7:35 PM, Lizeth Norman normanliz...@gmail.com wrote:
 Hi all!
 Following pieces excess to my needs:

 National Insturments gpib-enet 50$ plus shipping
 - serial 35$
 Package for gpsdo
 Moto m12+t
 Built Shera controller. detail pics on request. Working.
 10811a-6011
 mmcx to n adapter
 hp gps splitter 2 port
 Non linear systems meter for efc voltage
 gps patch antenna
 $210 plus shipping.

 Norm n3ykf

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[time-nuts] Help support the microwave addiction.

[Lizeth Norman]

Hi all!

Having finally moved and having been able to sort the stuff, there's
some goodies for sale:
Do have a few more items that would be of interest to the time and
frequency folks, but here's the first two.

I have two Shera based gpsdo kits available. One board is built,
tested and working.  The other is a complete kit of all parts and the
A+A engineering pc board.

Included in each kit:
1 HP 10811a-60111
1 sma unknown 5v active patch gps L1 antenna
1 HP 58535a gps active splitter
1 Motorola M12+T gps receiver

The built kit gets an HP rack mount enclosure with a LCD display of
the efc voltage. Feel free to use the boards inside, but as you will
see, it was my first attempt at a partial kit where YOU the builder
must buy to spec and then integrate according to a plan. Looks like
hell. Works ok, though..

Would like to trade for equipment. Particularly microwave attenuators,
mixers, preamps. Will trade + cash for a signal generator good to 18
GHz.

Kit one (built board with enclosure and power supply. Ask for photos.)
$250
Kit two
$210

All reasonable offers considered.

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Re: [time-nuts] Help support the microwave addiction.

[Lizeth Norman]

Pictures at:
http://www.flickr.com/photos/n3ykf/

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Re: [time-nuts] GPSDO Alternatives

[Lizeth Norman]

Bob et al:
Have been following this thread with interest.
Re the input capture versus interrupt, I do believe (at least the 2560
does this) that you can do both. It's been a while since I looked. a
look at the hardware manual. Was interested in this feature to do
hardware timing.
Norm

On Thu, Dec 6, 2012 at 6:25 PM, Bob Camp li...@rtty.us wrote:
 Hi

 That would be an input capture rather than an interrupt.

 Bob

 On Dec 6, 2012, at 6:16 PM, Hal Murray hmur...@megapathdsl.net wrote:


 albertson.ch...@gmail.com said:
 You'd have to seriously divide down the output from the 10MHz OCXO if you
 were going to use it as an interrupt.  Maybe to divide by 10,000? and even
 at the higher clock rate you'd still have poor resolution.

 I image each interrupt handler would sample some internal counter and the
 background task would look at the delta between the two and adjust the DAC
 to drive the OCXO to close the difference.   The resolution would be
 (maybe?) a handful of clock cycles.   Given enough time, say a 1000 second
 period it might wrk well enough.  I can't know without doing a more detailed
 design

 Do some of the counter/timer modules have an option to run the counter off an
 internal clock and copy the value into another register on an external 
 signal?

 That avoids any interrupt latency.




 --
 These are my opinions.  I hate spam.




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[time-nuts] FS/FT HP 5335A

[Lizeth Norman]

Wanted: microwave counter. Must go to at least 18 GHz.

For trade: HP 5335a. Working. HPIB, Enhanced HPIB triggering options,
etc..  Depending on unit cash can be part of the trade. Pics and other
docs, drop me a note.

73 de Norm n3ykf

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Re: [time-nuts] FS/FT HP 5335A

[Lizeth Norman]

Didier,
What are you asking? Trade+ cash?
73 de Norm

On Sat, Nov 24, 2012 at 3:50 PM,  shali...@gmail.com wrote:
 I have a working EIP 371 that is surplus to my needs. It has the interesting 
 source locking feature (described on my web site)

 Didier KO4BB

 Sent from my Droid Razr 4G LTE wireless tracker.



 -Original Message-
 From: Lizeth Norman normanliz...@gmail.com
 To: time-nuts@febo.com
 Sent: Sat, 24 Nov 2012 11:44 AM
 Subject: [time-nuts] FS/FT HP 5335A

 Wanted: microwave counter. Must go to at least 18 GHz.

 For trade: HP 5335a. Working. HPIB, Enhanced HPIB triggering options,
 etc..  Depending on unit cash can be part of the trade. Pics and other
 docs, drop me a note.

 73 de Norm n3ykf

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