Re: [time-nuts] FS -hp- 5370 "Time Nuts Processor" board + +

[Dan Rae]

Board is spoken for, thanks,
Dan
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Re: [time-nuts] TrueTime XL-AK Issues

[paul swed]

Dick
Thats great progress. Certainly its worth digging a bit deeper see whats up
on the antenna.
The way they sense the antenna is usually a single transistor sensing the
current and pulling a line high or low.
The micro senses that and reacts. It usually really easy to figure the
scheme out.
Regards
Paul
WB8TSL

On Fri, May 25, 2018 at 5:19 PM, Richard Solomon  wrote:

> The second unit locked up and showed 4 satellites at the time I looked.
>
> Next step is to replace the battery and see if it saves the setup.
>
>
> In particular, I will be interested in seeing if it stores the date OK.
>
>
> I found in the first unit what looked like a bad solder joint, but after
>
> fixing that it still shows an "Open" Antenna. Unless I have a major
>
> brain bleep, it will be relegated to Organ Donor status.
>
>
> But, one out of two ain't bad !!
>
>
> 73, Dick, W1KSZ
>
>
> Sent from Outlook
> 
> From: Richard Solomon
> Sent: Thursday, May 24, 2018 3:46:16 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] TrueTime XL-AK Issues
>
>
> Well, I think one unit has had it. It says the Antenna is open. If I
>
> connect the coax to the second unit, it says the Antenna is OK.
>
>
> A look at the board reveals nothing amiss, but I'll put it aside
>
> and look closer later. If nothing else it becomes an Organ Donor.
>
>
> The second unit is doing a sky survey now. I'll give it a few more
>
> hours to see what develops.
>
>
> Thanks, Dick, W1KSZ
>
>
> Sent from Outlook
> 
> From: time-nuts  on behalf of paul swed <
> paulsw...@gmail.com>
> Sent: Wednesday, May 23, 2018 6:39:05 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] TrueTime XL-AK Issues
>
> Great to hear let us know how it turns out.
> Regards
>
> On Wed, May 23, 2018 at 4:58 PM, Richard Solomon 
> wrote:
>
> > In further button pushing, I found the Date was 1998 !! So, I manually
> > reset the Date
> >
> > and Time and it's now doing a Satellite search.
> >
> >
> > The previous measurements must have been some artifact of Holdover.
> >
> >
> > One is now merrily searching, I'll let it run for a while.
> >
> >
> > And, I think you are correct, the Battery must surely be dead by now.
> I'll
> >
> > look into replacing it.
> >
> >
> > Thanks for replying,
> >
> >
> > 73, Dick, W1KSZ
> >
> >
> > Sent from Outlook
> > 
> > From: time-nuts  on behalf of paul swed <
> > paulsw...@gmail.com>
> > Sent: Wednesday, May 23, 2018 12:56:46 PM
> > To: Discussion of precise time and frequency measurement
> > Subject: Re: [time-nuts] TrueTime XL-AK Issues
> >
> > Wow
> > They actually came up. A site survey can take some 20 hours.
> > There should be some LED indicator that says the status is locking.
> > Let them run a day or two.
> > If there is a LI battery to retain information that may be long gone.
> > Replacing that would give you a fatser start.
> > Had to do this on some Odetics receivers.
> > Good luck
> > Paul.
> >
> > On Wed, May 23, 2018 at 3:26 PM, Bob kb8tq  wrote:
> >
> > > Hi
> > >
> > > My guess would be that they are not in a mode that allows them to lock.
> > > Some
> > > GPSDO’s require a “start” command. Others hold off locking until a site
> > > survey
> > > is complete ( or they have verified the last survey is correct ).
> > >
> > > Bob
> > >
> > > > On May 23, 2018, at 1:31 PM, Richard Solomon 
> > wrote:
> > > >
> > > > I have had two of these sitting on the shelf for years. Today I
> decided
> > > to see if they work.
> > > >
> > > > It's a slow week !!
> > > >
> > > >
> > > > I hooked them up to my external GPS Antenna through my Symmetricon
> > > Splitter and
> > > >
> > > > looked at the 10 MHz output on my HP 5334B (reference input derived
> > from
> > > a Trimble
> > > >
> > > > T-Bolt).
> > > >
> > > >
> > > > They both show a number of Satellites, but one reads 4.7 Hz low while
> > > the other reads
> > > >
> > > > 1.3 Hz low. I expected better.
> > > >
> > > >
> > > > Any thoughts on what would cause such a large deviation from 10 Mhz ?
> > > >
> > > >
> > > > Thanks for any replies,
> > > >
> > > >
> > > > 73, Dick, W1KSZ
> > > >
> > > >
> > > > Sent from Outlook
> > > > ___
> > > > 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 instructions there.
> > >
> > > ___
> > > 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 instructions there.
> > >
> 

[time-nuts] FS -hp- 5370 "Time Nuts Processor" board + +

[Dan Rae]

Bought some time around 2013 and not used if this is any use to anyone 
please contact me direct.   No reasonable offer refused.  I also have a 
5370B to go with it but that will have to be picked up in Santa Monica 
CA.  $100 with an A parts unit and a few spare boards rescued from the 
gold scrap dealers.


Dan



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Re: [time-nuts] TrueTime XL-AK Issues

[Richard Solomon]

The second unit locked up and showed 4 satellites at the time I looked.

Next step is to replace the battery and see if it saves the setup.


In particular, I will be interested in seeing if it stores the date OK.


I found in the first unit what looked like a bad solder joint, but after

fixing that it still shows an "Open" Antenna. Unless I have a major

brain bleep, it will be relegated to Organ Donor status.


But, one out of two ain't bad !!


73, Dick, W1KSZ


Sent from Outlook

From: Richard Solomon
Sent: Thursday, May 24, 2018 3:46:16 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] TrueTime XL-AK Issues


Well, I think one unit has had it. It says the Antenna is open. If I

connect the coax to the second unit, it says the Antenna is OK.


A look at the board reveals nothing amiss, but I'll put it aside

and look closer later. If nothing else it becomes an Organ Donor.


The second unit is doing a sky survey now. I'll give it a few more

hours to see what develops.


Thanks, Dick, W1KSZ


Sent from Outlook

From: time-nuts  on behalf of paul swed 

Sent: Wednesday, May 23, 2018 6:39:05 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] TrueTime XL-AK Issues

Great to hear let us know how it turns out.
Regards

On Wed, May 23, 2018 at 4:58 PM, Richard Solomon  wrote:

> In further button pushing, I found the Date was 1998 !! So, I manually
> reset the Date
>
> and Time and it's now doing a Satellite search.
>
>
> The previous measurements must have been some artifact of Holdover.
>
>
> One is now merrily searching, I'll let it run for a while.
>
>
> And, I think you are correct, the Battery must surely be dead by now. I'll
>
> look into replacing it.
>
>
> Thanks for replying,
>
>
> 73, Dick, W1KSZ
>
>
> Sent from Outlook
> 
> From: time-nuts  on behalf of paul swed <
> paulsw...@gmail.com>
> Sent: Wednesday, May 23, 2018 12:56:46 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] TrueTime XL-AK Issues
>
> Wow
> They actually came up. A site survey can take some 20 hours.
> There should be some LED indicator that says the status is locking.
> Let them run a day or two.
> If there is a LI battery to retain information that may be long gone.
> Replacing that would give you a fatser start.
> Had to do this on some Odetics receivers.
> Good luck
> Paul.
>
> On Wed, May 23, 2018 at 3:26 PM, Bob kb8tq  wrote:
>
> > Hi
> >
> > My guess would be that they are not in a mode that allows them to lock.
> > Some
> > GPSDO’s require a “start” command. Others hold off locking until a site
> > survey
> > is complete ( or they have verified the last survey is correct ).
> >
> > Bob
> >
> > > On May 23, 2018, at 1:31 PM, Richard Solomon 
> wrote:
> > >
> > > I have had two of these sitting on the shelf for years. Today I decided
> > to see if they work.
> > >
> > > It's a slow week !!
> > >
> > >
> > > I hooked them up to my external GPS Antenna through my Symmetricon
> > Splitter and
> > >
> > > looked at the 10 MHz output on my HP 5334B (reference input derived
> from
> > a Trimble
> > >
> > > T-Bolt).
> > >
> > >
> > > They both show a number of Satellites, but one reads 4.7 Hz low while
> > the other reads
> > >
> > > 1.3 Hz low. I expected better.
> > >
> > >
> > > Any thoughts on what would cause such a large deviation from 10 Mhz ?
> > >
> > >
> > > Thanks for any replies,
> > >
> > >
> > > 73, Dick, W1KSZ
> > >
> > >
> > > Sent from Outlook
> > > ___
> > > 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 instructions there.
> >
> > ___
> > 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 instructions there.
> >
> ___
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> mailman/listinfo/time-nuts
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>
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Re: [time-nuts] 5950 Crystal impedance meter manual

[Bernd Neubig]

Hi
Regarding the manuals,
I must look in my paper archive. I remember to have two manuals of two types of 
those "old test sets". I have even one of the test sets  in my "museum".
It will take a while to dig, as I am going to travel for 10 days.

I will come back after that.

Regards
Bernd

-Ursprüngliche Nachricht-
Von: time-nuts [mailto:time-nuts-boun...@febo.com] Im Auftrag von 
tim...@timeok.it
Gesendet: Freitag, 25. Mai 2018 18:53
An: time-nuts@febo.com
Betreff: [time-nuts] 5950 Crystal impedance meter manual


Hi all,
   Thank you all for the precious answers and the links you sent me.
   I'm studying them very carefully.
   I still continue to look for the manual of the 5950 because I like to keep 
the manuals of all the measuring instruments I have in my laboratory.
   Thanks again
   Luciano
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[time-nuts] 5950 Crystal impedance meter manual

[tim...@timeok.it]

Hi all,
   Thank you all for the precious answers and the links you sent me.
   I'm studying them very carefully.
   I still continue to look for the manual of the 5950 because I like to keep 
the manuals of all the measuring instruments I have in my laboratory.
   Thanks again
   Luciano
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Re: [time-nuts] Terminators on empty outputs/connectors

[Graham / KE9H]

As usual, the answer is "it depends."

If the output is a single isolated output, then terminating load not
required, but no harm providing.

If the output is a multiple output, from a single driver, through a
resistive or transformer splitter, then the level stability on all ports
and the port to port isolation is dependent on the proper termination of
all ports.
So, if multiple 10 MHz or 1 pps outputs, terminations highly recommended.

--- Graham

==

On Fri, May 25, 2018 at 10:21 AM, Dana Whitlow 
wrote:

> I recommend putting terminators on unused ports, on general principles.
> But I don't
> think it would ordinarily be necessary to use big-bucks terms, unless the
> distro amp is
> really cheaply made.
>
> If you have access to a VNA, it would be interesting to measure the complex
> transmission
> coefficient from input to one of the output ports while experimenting with
> variations of
> the number and locations of terminations for the other output ports.  If
> you find that none
> of such manipulations have any visible effect, then you can probably skip
> using terms
> on unused ports.  I should mention that any such measurements should best
> be performed
> at roughly the intended operating RF power level.
>
> And for extra credit, report your findings to this discussion group.
>
> Dana
>
>
> On Thu, May 24, 2018 at 3:41 AM, Clay Autery  wrote:
>
> > Putting in a hardware order...
> >
> > Question:  Is it recommended to put terminators on all unused GPS Distro
> > amp ports?  Output ports on GPSDO and NTP servers (10MHz and PPS).
> >
> > Thanks!
> >
> > --
> > __
> > Clay Autery
> > MONTAC Enterprises
> > (318) 518-1389
> >
> > ___
> > time-nuts mailing list -- time-nuts@febo.com
> > To unsubscribe, go to https://www.febo.com/cgi-bin/m
> > ailman/listinfo/time-nuts
> > and follow the instructions there.
> >
> ___
> 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 instructions there.
>
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Re: [time-nuts] Terminators on empty outputs/connectors

[Dana Whitlow]

I recommend putting terminators on unused ports, on general principles.
But I don't
think it would ordinarily be necessary to use big-bucks terms, unless the
distro amp is
really cheaply made.

If you have access to a VNA, it would be interesting to measure the complex
transmission
coefficient from input to one of the output ports while experimenting with
variations of
the number and locations of terminations for the other output ports.  If
you find that none
of such manipulations have any visible effect, then you can probably skip
using terms
on unused ports.  I should mention that any such measurements should best
be performed
at roughly the intended operating RF power level.

And for extra credit, report your findings to this discussion group.

Dana


On Thu, May 24, 2018 at 3:41 AM, Clay Autery  wrote:

> Putting in a hardware order...
>
> Question:  Is it recommended to put terminators on all unused GPS Distro
> amp ports?  Output ports on GPSDO and NTP servers (10MHz and PPS).
>
> Thanks!
>
> --
> __
> Clay Autery
> MONTAC Enterprises
> (318) 518-1389
>
> ___
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/m
> ailman/listinfo/time-nuts
> and follow the instructions there.
>
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Re: [time-nuts] GNS-500A Rubidium

[Clint Jay]

It has, in one of the pictures, a damaged label that says FRK so yes, I
would think that too.

It does look rather sad but could be a fun project perhaps.

On Fri, 25 May 2018 3:27 pm Bob kb8tq,  wrote:

> HI
>
> Unless I’m missing something, that’s an *old* Efratom. I would not count on
> it working without some significant effort. The price is right though.
>
> Bob
>
> > On May 25, 2018, at 10:21 AM, Clint Jay  wrote:
> >
> > Just spotted on eBay, a rather sorry looking GNS-500A Rubidium standard,
> > it's not expensive and is up for best offer, May or may not be of use to
> > someone?
> > ___
> > 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 instructions there.
>
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>
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Re: [time-nuts] GNS-500A Rubidium

[Bob kb8tq]

HI

Unless I’m missing something, that’s an *old* Efratom. I would not count on
it working without some significant effort. The price is right though. 

Bob

> On May 25, 2018, at 10:21 AM, Clint Jay  wrote:
> 
> Just spotted on eBay, a rather sorry looking GNS-500A Rubidium standard,
> it's not expensive and is up for best offer, May or may not be of use to
> someone?
> ___
> time-nuts mailing list -- time-nuts@febo.com
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[time-nuts] GNS-500A Rubidium

[Clint Jay]

Just spotted on eBay, a rather sorry looking GNS-500A Rubidium standard,
it's not expensive and is up for best offer, May or may not be of use to
someone?
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[time-nuts] Terminators on empty outputs/connectors

[Clay Autery]

Putting in a hardware order...

Question:  Is it recommended to put terminators on all unused GPS Distro 
amp ports?  Output ports on GPSDO and NTP servers (10MHz and PPS).


Thanks!

--
__
Clay Autery
MONTAC Enterprises
(318) 518-1389

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