Re: [time-nuts] interesting HP divider and clock on ebay

[Jeremy Nichols]

The inside looks very much like the inside of the 113. Different layout but
similar components and, it appears, also a 1 KHz motor.

J.


On Wed, Aug 9, 2017 at 8:22 PM paul swed  wrote:

> Thanks Tom I am familiar with the unit and this looks really nice. But
> won't be in my rack.
> Regards
> Paul
> WB8TSL
>
> On Wed, Aug 9, 2017 at 8:32 PM, Tom Van Baak  wrote:
>
> > > Boy I have to say the front looks great. Good pixs to look at.
> > > Price not exciting at all. But maybe someone has a spare kilo-buck.
> >
> > Paul,
> >
> > More info on the hp 115:
> >
> > http://hpmemoryproject.org/wb_pages/wall_b_page_01.htm
> >
> > /tvb
> > ___
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> > mailman/listinfo/time-nuts
> > and follow the instructions there.
> >
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Re: [time-nuts] interesting HP divider and clock on ebay

[paul swed]

Thanks Tom I am familiar with the unit and this looks really nice. But
won't be in my rack.
Regards
Paul
WB8TSL

On Wed, Aug 9, 2017 at 8:32 PM, Tom Van Baak  wrote:

> > Boy I have to say the front looks great. Good pixs to look at.
> > Price not exciting at all. But maybe someone has a spare kilo-buck.
>
> Paul,
>
> More info on the hp 115:
>
> http://hpmemoryproject.org/wb_pages/wall_b_page_01.htm
>
> /tvb
> ___
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> mailman/listinfo/time-nuts
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>
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Re: [time-nuts] interesting HP divider and clock on ebay

[Tom Van Baak]

> If the 115 has no motor (and I'm not questioning you, Bill) what moves the
> "digital" numbers? It looks like a clock drive, and the 1968 HP catalog
> makes reference to an "additional drum," which also sounds like a motor
> drive.
> 
> Jeremy

The 115 does have a motor; the digital readout works like an odometer.
Here's four of many photos of a 115BR and 115CR:

exterior:
http://www.dvq.com/oldcomp/hp/large/hp_115br_1.JPG
http://www.dvq.com/oldcomp/hp/large/hp115cr_1.JPG

interior:
http://www.dvq.com/oldcomp/hp/large/hp_115br_2.JPG
http://www.dvq.com/oldcomp/hp/large/hp_115br_5.JPG
http://www.dvq.com/oldcomp/hp/large/hp115cr_4.JPG

The last photo (hp115cr_4.JPG) is particularly nice.

Note also the NNN.NNN millisecond advance/retard feature. This is done with an 
analog phase resolver and digital turn counter.

/tvb
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Re: [time-nuts] interesting HP divider and clock on ebay

[Jeremy Nichols]

If the 115 has no motor (and I'm not questioning you, Bill) what moves the
"digital" numbers? It looks like a clock drive, and the 1968 HP catalog
makes reference to an "additional drum," which also sounds like a motor
drive.

Jeremy


On Wed, Aug 9, 2017 at 7:11 PM Bill Hawkins  wrote:

> You don't have to use the long link. Just search eBay for item
> #232426132876.
>
> It's pricey because it is from one of those resellers of surplus
> laboratory equipment. Who was that outfit in Texas?
>
> The front picture reveals that the desiccant is saturated (indicator is
> pink). Rear view shows blackened silver BNC connectors. These suggest
> that the instrument hasn't been reconditioned to merit that price. OTOH
> it could be R@@RE.
>
> Owned a 113B a few years ago. The 1 KC stepping motor does scream. Doubt
> that there's a motor in the 115.
>
> Would be interested in a repairable unit to measure my declining years -
> not for resale.
>
> Bill Hawkins
>
>
> -Original Message-
> From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Jeremy
> Nichols
> Sent: Wednesday, August 09, 2017 8:12 PM
>
> Definitely spendy. Is the 115 as noisy as the 113 (similar but w/analog
> clock)? Wonder what *les douanes* would charge to get that back into
> USA?
> Could you claim an exemption because it was Made in USA?
>
> Jeremy
>
>
> On Wed, Aug 9, 2017 at 5:32 PM Tom Van Baak  wrote:
>
> > > Boy I have to say the front looks great. Good pixs to look at.
> > > Price not exciting at all. But maybe someone has a spare kilo-buck.
> >
> > Paul,
> >
> > More info on the hp 115:
> >
> > http://hpmemoryproject.org/wb_pages/wall_b_page_01.htm
> >
> > /tvb
> > ___
>
> ___
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>
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Re: [time-nuts] interesting HP divider and clock on ebay

[Bill Hawkins]

You don't have to use the long link. Just search eBay for item
#232426132876.

It's pricey because it is from one of those resellers of surplus
laboratory equipment. Who was that outfit in Texas?

The front picture reveals that the desiccant is saturated (indicator is
pink). Rear view shows blackened silver BNC connectors. These suggest
that the instrument hasn't been reconditioned to merit that price. OTOH
it could be R@@RE.

Owned a 113B a few years ago. The 1 KC stepping motor does scream. Doubt
that there's a motor in the 115.

Would be interested in a repairable unit to measure my declining years -
not for resale.

Bill Hawkins


-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Jeremy
Nichols
Sent: Wednesday, August 09, 2017 8:12 PM

Definitely spendy. Is the 115 as noisy as the 113 (similar but w/analog
clock)? Wonder what *les douanes* would charge to get that back into
USA?
Could you claim an exemption because it was Made in USA?

Jeremy


On Wed, Aug 9, 2017 at 5:32 PM Tom Van Baak  wrote:

> > Boy I have to say the front looks great. Good pixs to look at.
> > Price not exciting at all. But maybe someone has a spare kilo-buck.
>
> Paul,
>
> More info on the hp 115:
>
> http://hpmemoryproject.org/wb_pages/wall_b_page_01.htm
>
> /tvb
> ___

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Re: [time-nuts] interesting HP divider and clock on ebay

[Jeremy Nichols]

Definitely spendy. Is the 115 as noisy as the 113 (similar but w/analog
clock)? Wonder what *les douanes* would charge to get that back into USA?
Could you claim an exemption because it was Made in USA?

Jeremy


On Wed, Aug 9, 2017 at 5:32 PM Tom Van Baak  wrote:

> > Boy I have to say the front looks great. Good pixs to look at.
> > Price not exciting at all. But maybe someone has a spare kilo-buck.
>
> Paul,
>
> More info on the hp 115:
>
> http://hpmemoryproject.org/wb_pages/wall_b_page_01.htm
>
> /tvb
> ___
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> 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] interesting HP divider and clock on ebay

[Tom Van Baak]

> Boy I have to say the front looks great. Good pixs to look at.
> Price not exciting at all. But maybe someone has a spare kilo-buck.

Paul,

More info on the hp 115:

http://hpmemoryproject.org/wb_pages/wall_b_page_01.htm

/tvb
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Re: [time-nuts] interesting HP divider and clock on ebay

[paul swed]

Boy I have to say the front looks great. Good pixs to look at.
Price not exciting at all. But maybe someone has a spare kilo-buck.
Regards
Paul
WB8TSL


On Wed, Aug 9, 2017 at 2:41 PM, walter shawlee 2 
wrote:

> Has nothing to do with us, but there's a very clean, minty  looking hp
> 115AR
> for sale on ebay with buy-it-now for ~US$1419.  seems like something Time
> Nuts
> aficionados would fancy.  Note, the rear silver BNCs are oxidized, and no
> special line/power cord..
>
> see this item:
> http://www.ebay.com/itm/HEWLETT-PACKARD-115AR-FREQUENCY-
> DIVIDER-DIGITAL-CLOCK-/232426132876?hash=item361dad558c:g:mU4AAOSwqW9ZX-zc
>
> all the best,
> walter
>
> --
> Walter Shawlee 2, President
> Sphere Research Corporation
> 3394 Sunnyside Rd.,  West Kelowna,  BC
> V1Z 2V4  CANADA  Phone: (250) 769-1834
> walt...@sphere.bc.ca
> WS2: We're all in one boat, no matter how it looks to you.
> Love is all you need. (John Lennon)
> But, that doesn't mean other things don't come in handy. (WS2)
>
> ___
> 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] Vectron Labs 100MHz OCXO datasheet?

[Neil]

Thanks everyone for the swift and comprehensive response, the specific 
device was purchased by a friend who is building a copy of my 100MHz 
OCXO PLL using an HMC1031 and he wanted to check the voltage/frequency 
and power specs.


I had tried their Twitter and the Contact Us on the Vectron website, 
but didn't get anything back so far.


I'll pass on the info to my friend.

Neil

On Wed, 9 Aug 2017 08:07:28 -0700, jimlux wrote:

On 8/8/17 11:04 PM, Neil Smith G4DBN wrote:
Does anyone have any technical info on a Vectron Laboratories 100MHz 
OCXO, model 724Y3067 (part number A61583-1) please? Can’t find a 
datasheet on the current Vectron Inc website and my Google-fu is weak 
today.

Neil
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and follow the instructions there.


that doesn't resemble a standard vectron part number

You might look at the CO-724

https://www.vectron.com/products/ocxo/co724725.htm

I don't know if Y indicates the temperature range... probably a 
custom.


FOr others in that series, the next two digits indicate the frequency
stability - 58 -> 5E-8, 28 -> 2E-8, 17->1E-7

30 -> 3E-10?

If you're looking at the one in the various online ads, the pinout is
pretty different - this is almost certainly a custom.

You could always send an email to Vectron



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Re: [time-nuts] HP5065A +20V supply and C-field mods

[Bob kb8tq]

Hi

Sounds like a lot of fun getting everything to zero out :)

One thing to watch for is hysteresis. The tempco may not be quite the same
going hot to cold as going cold to hot.

Bob


> On Aug 9, 2017, at 2:34 PM, cdel...@juno.com wrote:
> 
> HP5065A +20V supply and C-field circuit mods
> 
> I'm doing some more work on the 5065A and thought I'd share the results
> of a 
> modification (one of several that will be done on this unit).
> I measured the +20V P/S temperature coefficient and got -13.5ppm per
> degree C. 
> This equates well with the 1N938 10ppm/C and the voltage set resistor TCs
> 
> of plus/minus 10ppm/C. However the TC varies if the C-field pot is
> changed.
> The original circuit has 11.9ma thru the reference diode series resistor
> (925 Ohm)for a diode current of 6.8ma and a C-field pot circuit current
> of 
> 5.1ma at midrange on the pot. (zero TC on the diode is specified as
> 7.5ma)
> The diode current ranges from 5.3 to 7.8ma depending on the C-field pots
> position. 
> Since I am replacing the C-field circuit, the C-field pot circuit has
> been 
> removed. The 925 Ohm resistor was replaced with a 1ppm/C 1K resistor and
> a 
> 1K precision pot. This allows the Reference diode current to be adjusted 
> to compensate for all the elements in the circuit. (The TC of the diode
> changes depending on the diode current)
> After adjusting the diode current and temperature over many iterations 
> and monitoring the +20 Volt output I was able to find a diode current to 
> bring the +20 Volt output coefficient to below 1ppm per degree C!
> (-.6ppm/C)
> So that part of the mod is done.
> Next I will be installing a new C-field current source that has a TC of
> 2ppm 
> per degree C.
> Then I'll do some long term plots against the Maser to see if the long 
> term stability has improved at all.
> 
> More to come!
> Cheers,
> 
> Corby
> 
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[time-nuts] interesting HP divider and clock on ebay

[walter shawlee 2]

Has nothing to do with us, but there's a very clean, minty  looking hp 115AR
for sale on ebay with buy-it-now for ~US$1419.  seems like something Time Nuts
aficionados would fancy.  Note, the rear silver BNCs are oxidized, and no 
special line/power cord..


see this item:
http://www.ebay.com/itm/HEWLETT-PACKARD-115AR-FREQUENCY-DIVIDER-DIGITAL-CLOCK-/232426132876?hash=item361dad558c:g:mU4AAOSwqW9ZX-zc

all the best,
walter

--
Walter Shawlee 2, President
Sphere Research Corporation
3394 Sunnyside Rd.,  West Kelowna,  BC
V1Z 2V4  CANADA  Phone: (250) 769-1834
walt...@sphere.bc.ca
WS2: We're all in one boat, no matter how it looks to you.
Love is all you need. (John Lennon)
But, that doesn't mean other things don't come in handy. (WS2)

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[time-nuts] HP5065A +20V supply and C-field mods

[cdelect]

HP5065A +20V supply and C-field circuit mods

I'm doing some more work on the 5065A and thought I'd share the results
of a 
modification (one of several that will be done on this unit).
I measured the +20V P/S temperature coefficient and got -13.5ppm per
degree C. 
This equates well with the 1N938 10ppm/C and the voltage set resistor TCs

of plus/minus 10ppm/C. However the TC varies if the C-field pot is
changed.
The original circuit has 11.9ma thru the reference diode series resistor
(925 Ohm)for a diode current of 6.8ma and a C-field pot circuit current
of 
5.1ma at midrange on the pot. (zero TC on the diode is specified as
7.5ma)
The diode current ranges from 5.3 to 7.8ma depending on the C-field pots
position. 
Since I am replacing the C-field circuit, the C-field pot circuit has
been 
removed. The 925 Ohm resistor was replaced with a 1ppm/C 1K resistor and
a 
1K precision pot. This allows the Reference diode current to be adjusted 
to compensate for all the elements in the circuit. (The TC of the diode
changes depending on the diode current)
After adjusting the diode current and temperature over many iterations 
and monitoring the +20 Volt output I was able to find a diode current to 
bring the +20 Volt output coefficient to below 1ppm per degree C!
(-.6ppm/C)
So that part of the mod is done.
Next I will be installing a new C-field current source that has a TC of
2ppm 
per degree C.
Then I'll do some long term plots against the Maser to see if the long 
term stability has improved at all.

More to come!
Cheers,

Corby

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Re: [time-nuts] Vectron Labs 100MHz OCXO datasheet?

[Bob kb8tq]

Hi

Actually it *is* a standard Vectron part number. Once an OEM placed an order, 
the specific part was issued
a 4 digit “code”. That plus the base model number made up the part number from 
there on. On could debate
endlessly if it was to make reordering easier (fewer digits to make mistakes 
on) or to obscure the actual spec.
One advantage of the 4 digit approach would be if the customer decided they  
wanted some non-standard 
(weird lead lengths…) spec on their part.  

Bob

> On Aug 9, 2017, at 11:07 AM, jimlux  wrote:
> 
> On 8/8/17 11:04 PM, Neil Smith G4DBN wrote:
>> Does anyone have any technical info on a Vectron Laboratories 100MHz OCXO, 
>> model 724Y3067 (part number A61583-1) please? Can’t find a datasheet on the 
>> current Vectron Inc website and my Google-fu is weak today.
>> Neil
>> ___
>> 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.
>> 
> that doesn't resemble a standard vectron part number
> 
> You might look at the CO-724
> 
> https://www.vectron.com/products/ocxo/co724725.htm
> 
> I don't know if Y indicates the temperature range... probably a custom.
> 
> FOr others in that series, the next two digits indicate the frequency 
> stability - 58 -> 5E-8, 28 -> 2E-8, 17->1E-7
> 
> 30 -> 3E-10?
> 
> If you're looking at the one in the various online ads, the pinout is pretty 
> different - this is almost certainly a custom.
> 
> You could always send an email to Vectron
> 
> 
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Re: [time-nuts] Vectron Labs 100MHz OCXO datasheet?

[jimlux]

On 8/8/17 11:04 PM, Neil Smith G4DBN wrote:

Does anyone have any technical info on a Vectron Laboratories 100MHz OCXO, 
model 724Y3067 (part number A61583-1) please? Can’t find a datasheet on the 
current Vectron Inc website and my Google-fu is weak today.
Neil
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that doesn't resemble a standard vectron part number

You might look at the CO-724

https://www.vectron.com/products/ocxo/co724725.htm

I don't know if Y indicates the temperature range... probably a custom.

FOr others in that series, the next two digits indicate the frequency 
stability - 58 -> 5E-8, 28 -> 2E-8, 17->1E-7


30 -> 3E-10?

If you're looking at the one in the various online ads, the pinout is 
pretty different - this is almost certainly a custom.


You could always send an email to Vectron


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Re: [time-nuts] Vectron Labs 100MHz OCXO datasheet?

[Dave M]

Neil Smith G4DBN wrote:

Does anyone have any technical info on a Vectron Laboratories 100MHz
OCXO, model 724Y3067 (part number A61583-1) please? Can’t find a
datasheet on the current Vectron Inc website and my Google-fu is weak
today. Neil




The 724Y is a model in Vectron's CO-724 series.  I've sent a copy of the 
datasheet directly to Neil


Cheers,
Dave M 


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[time-nuts] Vectron Labs 100MHz OCXO datasheet?

[Neil Smith G4DBN]

Does anyone have any technical info on a Vectron Laboratories 100MHz OCXO, 
model 724Y3067 (part number A61583-1) please? Can’t find a datasheet on the 
current Vectron Inc website and my Google-fu is weak today.
Neil
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Re: [time-nuts] SOPHOS discussion of GPS jamming and eLoran

[jim stephens]

On 8/9/2017 12:15 AM, Martin Burnicki wrote:

Dave B via time-nuts wrote:

Or...

http://bit.ly/2hGKTgXThat goes to:-

There are 2 problems I see with this kind of link:

1.) A user doesn't see where the link takes him before he has clicked on
the link, so he can easily be taken to a "bad" web site.

Bitly has a feature to preview the link destination.
For example, for http://bit.ly/2hGKTgX add a plus character 
http://bit.ly/2hGKTgX+


You get this information with the + version of the link:

Cyberattacks on GPS leave ships sailing in dangerous waters – Naked Security
https://nakedsecurity.sophos.com/2017/08/07/cyberattacks-on-gps-leave-ships-sailing-in-dangerous-waters

bitly.com/2hGKTgX


Info copied from Bit.ly web site FAQ.

 There were some "preview shortened link" sites, but you'd have to 
trust one of those to use that approach.


When I have a link like this I wish to expand, I use linux command line 
/ curses browser lynx.  No way to infect anything with it, and view all 
the indirections as they pop up.


I agree, I seldom bother with the current malware / security 
environment, better to do that than risk it.  And I always tell anyone 
who asks me for advise as you do, skip it, unless you really know what 
you are doing, or you will get pawned.


thanks
Jim
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Re: [time-nuts] SOPHOS discussion of GPS jamming and eLoran

[Martin Burnicki]

Dave B via time-nuts wrote:
> Or...
> 
> http://bit.ly/2hGKTgXThat goes to:-

There are 2 problems I see with this kind of link:

1.) A user doesn't see where the link takes him before he has clicked on
the link, so he can easily be taken to a "bad" web site.

2.) These short links eventually expire after some time, so if you find
an email with the short link later in the ML archive then the short link
may not work anymore, even though the original link may still be valid.

Martin

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