Re: [time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[Jim Harman]

If I had to guess from the photos, I would try the resistors on standoffs
next to the 20K pot at the bottom of the photo OSC_02. I assume the pot is
the frequency adjustment.

On Thu, Oct 25, 2018 at 8:38 PM paul swed  wrote:

> Hello to the group.
> Ulf looks like a lot of people are trying to help.
> Earlier in the thread it was mentioned that there often is a tuning cap of
> some fixed value.
> I have actually slightly adjusted those to fix as an example a HP 10811.
> Typically its a single cap.
> But it can't hurt to try changing it if you can figure out the cap.
> Regards
> Paul
> WB8TSL
>
> On Thu, Oct 25, 2018 at 7:14 PM Bob kb8tq  wrote:
>
> > Hi
> >
> > One fairly real possibility - it can’t be repaired. The  tuning range of
> a
> > BVA based oscillator is pretty
> > small. It may be that the crystal has simply aged further than it can be
> > tuned.
> >
> > Assuming the device is still operating properly, there are a lot of uses
> > for a working “1Hz off” 5 MHz
> > OCXO …..
> >
> > Bob
> >
> > > On Oct 25, 2018, at 3:38 PM, Mark Goldberg 
> > wrote:
> > >
> > > I agree they likely won't provide a schematic and will want it back for
> > > repair. If it is a proprietary design for someone, they may not even
> > repair
> > > it for you and certainly won't give you any info. I was at least able
> to
> > > get a little info from Wenzel about a similar oscillator I was looking
> at
> > > and they gave me hints about what the one I had was not, basically not
> > > telling me info but keeping me from heading down the wrong path. If you
> > ask
> > > nicely via email and are understanding about their situation with
> > > proprietary products, maybe they will be of some help.
> > >
> > > I have reverse engineered a couple of oscillators. You don't have to
> > > reverse engineer the whole thing, just the frequency adjustment
> section.
> > I
> > > don't know anything about this oscillator but you can determine what
> the
> > > available adjustment is, a pot or a trimmer cap. If it is a pot, is
> there
> > > another resistor that sets the course adjustment? If it is a trimmer
> cap,
> > > there is usually a parallel cap that sets the course adjustment.
> Possibly
> > > those could be replaced with different values to get the adjustment
> range
> > > back. Worth a try.
> > >
> > > If you can look at the circuit around the crystal, you likely can
> > determine
> > > what the oscillator topology is.
> > >
> > > Can you tell if the oven is working? Typically it will draw more
> current
> > on
> > > startup and then reduce the current draw after a while when it gets to
> > > temperature. I've found broken heater wires before.
> > >
> > > Regards,
> > >
> > > Mark
> > >
> > >
> > > On Thu, Oct 25, 2018 at 11:26 AM paul swed 
> wrote:
> > >
> > >> Ulf
> > >> I have no details. But perhaps off list we could reverse engineer it.
> > >> Simply a suggestion. Especially since you have it open.
> > >> Regards
> > >> Paul
> > >> WB8TSL
> > >>
> > >> On Thu, Oct 25, 2018 at 2:15 PM Bob kb8tq  wrote:
> > >>
> > >>> Hi
> > >>>
> > >>> Even with an “account”, most oscillator companies will not supply
> > >> internal
> > >>> details on their product. That’s in part
> > >>> to protect their IP. It also reflects the complexity of tracing back
> to
> > >>> exactly what doc’s apply to an older unit. The
> > >>> normal drill is for you to send it back and they take a look at it.
> > They
> > >>> then quote a repair charge and you either
> > >>> go ahead with it or have them send it back.
> > >>>
> > >>> Bob
> > >>>
> >  On Oct 25, 2018, at 1:56 PM, Ulf Kylenfall via time-nuts <
> > >>> time-nuts@lists.febo.com> wrote:
> > 
> > 
> >  Many monts ago I approached the list regarding an Oscilloquartz
> > >>> 8600-3(945.860.011.03 s/n 422) 5 MHz Ovenized Crystal Oscillator. It
> > had
> > >>> aged and was 1 Hz off and couldnot be braught back to 5.000.000 MHz.
> >  Since I did not have "an account" with Oscilloquartz or what they
> are
> > >>> calledtoday, I was not able to get any help from them.
> >  There was one answer off the list from someone who could possibly
> > >>> helpbut that person either forgot or did not have any relevant
> > >>> informationto share.
> >  A box with the dismantled unit has been laying on my shelf for
> months
> > >>> and I am therefore asking again. If there is no information about
> > >> thisunit
> > >>> available I will scrap it. I do not know of any other forumto ask.
> >  Best Regards
> > 
> >  Ulf KylenfallSM6GXV
> > 
> >  ___
> >  time-nuts mailing list -- time-nuts@lists.febo.com
> >  To unsubscribe, go to
> > >>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> >  and follow the instructions there.
> > >>>
> > >>>
> > >>> ___
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> > >>> To unsubscribe, go to
> > >>> 

Re: [time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[paul swed]

Hello to the group.
Ulf looks like a lot of people are trying to help.
Earlier in the thread it was mentioned that there often is a tuning cap of
some fixed value.
I have actually slightly adjusted those to fix as an example a HP 10811.
Typically its a single cap.
But it can't hurt to try changing it if you can figure out the cap.
Regards
Paul
WB8TSL

On Thu, Oct 25, 2018 at 7:14 PM Bob kb8tq  wrote:

> Hi
>
> One fairly real possibility - it can’t be repaired. The  tuning range of a
> BVA based oscillator is pretty
> small. It may be that the crystal has simply aged further than it can be
> tuned.
>
> Assuming the device is still operating properly, there are a lot of uses
> for a working “1Hz off” 5 MHz
> OCXO …..
>
> Bob
>
> > On Oct 25, 2018, at 3:38 PM, Mark Goldberg 
> wrote:
> >
> > I agree they likely won't provide a schematic and will want it back for
> > repair. If it is a proprietary design for someone, they may not even
> repair
> > it for you and certainly won't give you any info. I was at least able to
> > get a little info from Wenzel about a similar oscillator I was looking at
> > and they gave me hints about what the one I had was not, basically not
> > telling me info but keeping me from heading down the wrong path. If you
> ask
> > nicely via email and are understanding about their situation with
> > proprietary products, maybe they will be of some help.
> >
> > I have reverse engineered a couple of oscillators. You don't have to
> > reverse engineer the whole thing, just the frequency adjustment section.
> I
> > don't know anything about this oscillator but you can determine what the
> > available adjustment is, a pot or a trimmer cap. If it is a pot, is there
> > another resistor that sets the course adjustment? If it is a trimmer cap,
> > there is usually a parallel cap that sets the course adjustment. Possibly
> > those could be replaced with different values to get the adjustment range
> > back. Worth a try.
> >
> > If you can look at the circuit around the crystal, you likely can
> determine
> > what the oscillator topology is.
> >
> > Can you tell if the oven is working? Typically it will draw more current
> on
> > startup and then reduce the current draw after a while when it gets to
> > temperature. I've found broken heater wires before.
> >
> > Regards,
> >
> > Mark
> >
> >
> > On Thu, Oct 25, 2018 at 11:26 AM paul swed  wrote:
> >
> >> Ulf
> >> I have no details. But perhaps off list we could reverse engineer it.
> >> Simply a suggestion. Especially since you have it open.
> >> Regards
> >> Paul
> >> WB8TSL
> >>
> >> On Thu, Oct 25, 2018 at 2:15 PM Bob kb8tq  wrote:
> >>
> >>> Hi
> >>>
> >>> Even with an “account”, most oscillator companies will not supply
> >> internal
> >>> details on their product. That’s in part
> >>> to protect their IP. It also reflects the complexity of tracing back to
> >>> exactly what doc’s apply to an older unit. The
> >>> normal drill is for you to send it back and they take a look at it.
> They
> >>> then quote a repair charge and you either
> >>> go ahead with it or have them send it back.
> >>>
> >>> Bob
> >>>
>  On Oct 25, 2018, at 1:56 PM, Ulf Kylenfall via time-nuts <
> >>> time-nuts@lists.febo.com> wrote:
> 
> 
>  Many monts ago I approached the list regarding an Oscilloquartz
> >>> 8600-3(945.860.011.03 s/n 422) 5 MHz Ovenized Crystal Oscillator. It
> had
> >>> aged and was 1 Hz off and couldnot be braught back to 5.000.000 MHz.
>  Since I did not have "an account" with Oscilloquartz or what they are
> >>> calledtoday, I was not able to get any help from them.
>  There was one answer off the list from someone who could possibly
> >>> helpbut that person either forgot or did not have any relevant
> >>> informationto share.
>  A box with the dismantled unit has been laying on my shelf for months
> >>> and I am therefore asking again. If there is no information about
> >> thisunit
> >>> available I will scrap it. I do not know of any other forumto ask.
>  Best Regards
> 
>  Ulf KylenfallSM6GXV
> 
>  ___
>  time-nuts mailing list -- time-nuts@lists.febo.com
>  To unsubscribe, go to
> >>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
>  and follow the instructions there.
> >>>
> >>>
> >>> ___
> >>> time-nuts mailing list -- time-nuts@lists.febo.com
> >>> To unsubscribe, go to
> >>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> >>> and follow the instructions there.
> >>>
> >> ___
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> >> To unsubscribe, go to
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> >> and follow the instructions there.
> >>
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> > To unsubscribe, go to
> 

Re: [time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[Bob kb8tq]

Hi

One fairly real possibility - it can’t be repaired. The  tuning range of a BVA 
based oscillator is pretty 
small. It may be that the crystal has simply aged further than it can be tuned. 

Assuming the device is still operating properly, there are a lot of uses for a 
working “1Hz off” 5 MHz
OCXO …..

Bob

> On Oct 25, 2018, at 3:38 PM, Mark Goldberg  wrote:
> 
> I agree they likely won't provide a schematic and will want it back for
> repair. If it is a proprietary design for someone, they may not even repair
> it for you and certainly won't give you any info. I was at least able to
> get a little info from Wenzel about a similar oscillator I was looking at
> and they gave me hints about what the one I had was not, basically not
> telling me info but keeping me from heading down the wrong path. If you ask
> nicely via email and are understanding about their situation with
> proprietary products, maybe they will be of some help.
> 
> I have reverse engineered a couple of oscillators. You don't have to
> reverse engineer the whole thing, just the frequency adjustment section. I
> don't know anything about this oscillator but you can determine what the
> available adjustment is, a pot or a trimmer cap. If it is a pot, is there
> another resistor that sets the course adjustment? If it is a trimmer cap,
> there is usually a parallel cap that sets the course adjustment. Possibly
> those could be replaced with different values to get the adjustment range
> back. Worth a try.
> 
> If you can look at the circuit around the crystal, you likely can determine
> what the oscillator topology is.
> 
> Can you tell if the oven is working? Typically it will draw more current on
> startup and then reduce the current draw after a while when it gets to
> temperature. I've found broken heater wires before.
> 
> Regards,
> 
> Mark
> 
> 
> On Thu, Oct 25, 2018 at 11:26 AM paul swed  wrote:
> 
>> Ulf
>> I have no details. But perhaps off list we could reverse engineer it.
>> Simply a suggestion. Especially since you have it open.
>> Regards
>> Paul
>> WB8TSL
>> 
>> On Thu, Oct 25, 2018 at 2:15 PM Bob kb8tq  wrote:
>> 
>>> Hi
>>> 
>>> Even with an “account”, most oscillator companies will not supply
>> internal
>>> details on their product. That’s in part
>>> to protect their IP. It also reflects the complexity of tracing back to
>>> exactly what doc’s apply to an older unit. The
>>> normal drill is for you to send it back and they take a look at it. They
>>> then quote a repair charge and you either
>>> go ahead with it or have them send it back.
>>> 
>>> Bob
>>> 
 On Oct 25, 2018, at 1:56 PM, Ulf Kylenfall via time-nuts <
>>> time-nuts@lists.febo.com> wrote:
 
 
 Many monts ago I approached the list regarding an Oscilloquartz
>>> 8600-3(945.860.011.03 s/n 422) 5 MHz Ovenized Crystal Oscillator. It had
>>> aged and was 1 Hz off and couldnot be braught back to 5.000.000 MHz.
 Since I did not have "an account" with Oscilloquartz or what they are
>>> calledtoday, I was not able to get any help from them.
 There was one answer off the list from someone who could possibly
>>> helpbut that person either forgot or did not have any relevant
>>> informationto share.
 A box with the dismantled unit has been laying on my shelf for months
>>> and I am therefore asking again. If there is no information about
>> thisunit
>>> available I will scrap it. I do not know of any other forumto ask.
 Best Regards
 
 Ulf KylenfallSM6GXV
 
 ___
 time-nuts mailing list -- time-nuts@lists.febo.com
 To unsubscribe, go to
>>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
 and follow the instructions there.
>>> 
>>> 
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>>> 
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>> and follow the instructions there.
>> 
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Re: [time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[Mark Goldberg]

I agree they likely won't provide a schematic and will want it back for
repair. If it is a proprietary design for someone, they may not even repair
it for you and certainly won't give you any info. I was at least able to
get a little info from Wenzel about a similar oscillator I was looking at
and they gave me hints about what the one I had was not, basically not
telling me info but keeping me from heading down the wrong path. If you ask
nicely via email and are understanding about their situation with
proprietary products, maybe they will be of some help.

I have reverse engineered a couple of oscillators. You don't have to
reverse engineer the whole thing, just the frequency adjustment section. I
don't know anything about this oscillator but you can determine what the
available adjustment is, a pot or a trimmer cap. If it is a pot, is there
another resistor that sets the course adjustment? If it is a trimmer cap,
there is usually a parallel cap that sets the course adjustment. Possibly
those could be replaced with different values to get the adjustment range
back. Worth a try.

If you can look at the circuit around the crystal, you likely can determine
what the oscillator topology is.

Can you tell if the oven is working? Typically it will draw more current on
startup and then reduce the current draw after a while when it gets to
temperature. I've found broken heater wires before.

Regards,

Mark


On Thu, Oct 25, 2018 at 11:26 AM paul swed  wrote:

> Ulf
> I have no details. But perhaps off list we could reverse engineer it.
> Simply a suggestion. Especially since you have it open.
> Regards
> Paul
> WB8TSL
>
> On Thu, Oct 25, 2018 at 2:15 PM Bob kb8tq  wrote:
>
> > Hi
> >
> > Even with an “account”, most oscillator companies will not supply
> internal
> > details on their product. That’s in part
> > to protect their IP. It also reflects the complexity of tracing back to
> > exactly what doc’s apply to an older unit. The
> > normal drill is for you to send it back and they take a look at it. They
> > then quote a repair charge and you either
> > go ahead with it or have them send it back.
> >
> > Bob
> >
> > > On Oct 25, 2018, at 1:56 PM, Ulf Kylenfall via time-nuts <
> > time-nuts@lists.febo.com> wrote:
> > >
> > >
> > > Many monts ago I approached the list regarding an Oscilloquartz
> > 8600-3(945.860.011.03 s/n 422) 5 MHz Ovenized Crystal Oscillator. It had
> > aged and was 1 Hz off and couldnot be braught back to 5.000.000 MHz.
> > > Since I did not have "an account" with Oscilloquartz or what they are
> > calledtoday, I was not able to get any help from them.
> > > There was one answer off the list from someone who could possibly
> > helpbut that person either forgot or did not have any relevant
> > informationto share.
> > > A box with the dismantled unit has been laying on my shelf for months
> > and I am therefore asking again. If there is no information about
> thisunit
> > available I will scrap it. I do not know of any other forumto ask.
> > > Best Regards
> > >
> > > Ulf KylenfallSM6GXV
> > >
> > > ___
> > > time-nuts mailing list -- time-nuts@lists.febo.com
> > > To unsubscribe, go to
> > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > > and follow the instructions there.
> >
> >
> > ___
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> > To unsubscribe, go to
> > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > and follow the instructions there.
> >
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Re: [time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[ed breya]

It seems rather drastic to scrap a basically working unit for lack of 
info. If you can't find anything, then there's a wide range of 
possibilities - you've got nothing to loose then, so try tweaking the 
circuit design a little. It should be  evident where the coarse tuning 
and oscillator circuitry is. If the oven is operational and gets hot, 
then assume its temperature is about right, or measure and compare to 
any markings inside - many OC crystals I've seen have the turnover 
marked right on them, or on the assembly. Then figure out just the 
coarse tuning section circuit, and you'll be able to see how to move the 
frequency a hair either way, usually by changing the value of a fixed 
capacitor (but can sometimes be done by changing an inductor) in the 
oscillator.


Good luck.
Ed

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Re: [time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[rfnuts]

Hi Ulf,

I will be happy to help you with the repair.
I do have a B5400, which is a predecessor of the BVA series.
I had it completely dismanteled some years ago. It has a significantly
different design though.
Nevertheless, I'm into OCXO stuff, and I might be able to help, probably
only by having it physically in front of me.

Worst case, you can still decide to scrap it, but in that case I would
be happy to take the parts. The dewar, for example, would be great for
someone who hase a BVA with broken dewar, or alike.

Adrian

DL4GBO

Am 25.10.2018 um 19:56 schrieb Ulf Kylenfall via time-nuts:
>  
> Many monts ago I approached the list regarding an Oscilloquartz 
> 8600-3(945.860.011.03 s/n 422) 5 MHz Ovenized Crystal Oscillator. It had aged 
> and was 1 Hz off and couldnot be braught back to 5.000.000 MHz.
> Since I did not have "an account" with Oscilloquartz or what they are 
> calledtoday, I was not able to get any help from them.
> There was one answer off the list from someone who could possibly helpbut 
> that person either forgot or did not have any relevant informationto share.
> A box with the dismantled unit has been laying on my shelf for months and I 
> am therefore asking again. If there is no information about thisunit 
> available I will scrap it. I do not know of any other forumto ask.
> Best Regards
> 
> Ulf KylenfallSM6GXV
> 
> ___
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> To unsubscribe, go to 
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> and follow the instructions there.
> 

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Re: [time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[Adrian Godwin]

Those are excellent images. Just needs a shot of the track side of the
larger board.

On Thu, Oct 25, 2018 at 8:38 PM Azelio Boriani 
wrote:

> Images of the 8600 can be found here:
> 
> A paper on the 8607 BVA with the oven schematic is here:
> 
> Maybe it is similar to the 8600's oven.
> On Thu, Oct 25, 2018 at 8:26 PM paul swed  wrote:
> >
> > Ulf
> > I have no details. But perhaps off list we could reverse engineer it.
> > Simply a suggestion. Especially since you have it open.
> > Regards
> > Paul
> > WB8TSL
> >
> > On Thu, Oct 25, 2018 at 2:15 PM Bob kb8tq  wrote:
> >
> > > Hi
> > >
> > > Even with an “account”, most oscillator companies will not supply
> internal
> > > details on their product. That’s in part
> > > to protect their IP. It also reflects the complexity of tracing back to
> > > exactly what doc’s apply to an older unit. The
> > > normal drill is for you to send it back and they take a look at it.
> They
> > > then quote a repair charge and you either
> > > go ahead with it or have them send it back.
> > >
> > > Bob
> > >
> > > > On Oct 25, 2018, at 1:56 PM, Ulf Kylenfall via time-nuts <
> > > time-nuts@lists.febo.com> wrote:
> > > >
> > > >
> > > > Many monts ago I approached the list regarding an Oscilloquartz
> > > 8600-3(945.860.011.03 s/n 422) 5 MHz Ovenized Crystal Oscillator. It
> had
> > > aged and was 1 Hz off and couldnot be braught back to 5.000.000 MHz.
> > > > Since I did not have "an account" with Oscilloquartz or what they are
> > > calledtoday, I was not able to get any help from them.
> > > > There was one answer off the list from someone who could possibly
> > > helpbut that person either forgot or did not have any relevant
> > > informationto share.
> > > > A box with the dismantled unit has been laying on my shelf for months
> > > and I am therefore asking again. If there is no information about
> thisunit
> > > available I will scrap it. I do not know of any other forumto ask.
> > > > Best Regards
> > > >
> > > > Ulf KylenfallSM6GXV
> > > >
> > > > ___
> > > > time-nuts mailing list -- time-nuts@lists.febo.com
> > > > To unsubscribe, go to
> > > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > > > and follow the instructions there.
> > >
> > >
> > > ___
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> > > To unsubscribe, go to
> > > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > > and follow the instructions there.
> > >
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> > and follow the instructions there.
>
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Re: [time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[paul swed]

Ulf
I have no details. But perhaps off list we could reverse engineer it.
Simply a suggestion. Especially since you have it open.
Regards
Paul
WB8TSL

On Thu, Oct 25, 2018 at 2:15 PM Bob kb8tq  wrote:

> Hi
>
> Even with an “account”, most oscillator companies will not supply internal
> details on their product. That’s in part
> to protect their IP. It also reflects the complexity of tracing back to
> exactly what doc’s apply to an older unit. The
> normal drill is for you to send it back and they take a look at it. They
> then quote a repair charge and you either
> go ahead with it or have them send it back.
>
> Bob
>
> > On Oct 25, 2018, at 1:56 PM, Ulf Kylenfall via time-nuts <
> time-nuts@lists.febo.com> wrote:
> >
> >
> > Many monts ago I approached the list regarding an Oscilloquartz
> 8600-3(945.860.011.03 s/n 422) 5 MHz Ovenized Crystal Oscillator. It had
> aged and was 1 Hz off and couldnot be braught back to 5.000.000 MHz.
> > Since I did not have "an account" with Oscilloquartz or what they are
> calledtoday, I was not able to get any help from them.
> > There was one answer off the list from someone who could possibly
> helpbut that person either forgot or did not have any relevant
> informationto share.
> > A box with the dismantled unit has been laying on my shelf for months
> and I am therefore asking again. If there is no information about thisunit
> available I will scrap it. I do not know of any other forumto ask.
> > Best Regards
> >
> > Ulf KylenfallSM6GXV
> >
> > ___
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>
>
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Re: [time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[Bob kb8tq]

Hi

Even with an “account”, most oscillator companies will not supply internal 
details on their product. That’s in part
to protect their IP. It also reflects the complexity of tracing back to exactly 
what doc’s apply to an older unit. The 
normal drill is for you to send it back and they take a look at it. They then 
quote a repair charge and you either 
go ahead with it or have them send it back. 

Bob

> On Oct 25, 2018, at 1:56 PM, Ulf Kylenfall via time-nuts 
>  wrote:
> 
> 
> Many monts ago I approached the list regarding an Oscilloquartz 
> 8600-3(945.860.011.03 s/n 422) 5 MHz Ovenized Crystal Oscillator. It had aged 
> and was 1 Hz off and couldnot be braught back to 5.000.000 MHz.
> Since I did not have "an account" with Oscilloquartz or what they are 
> calledtoday, I was not able to get any help from them.
> There was one answer off the list from someone who could possibly helpbut 
> that person either forgot or did not have any relevant informationto share.
> A box with the dismantled unit has been laying on my shelf for months and I 
> am therefore asking again. If there is no information about thisunit 
> available I will scrap it. I do not know of any other forumto ask.
> Best Regards
> 
> Ulf KylenfallSM6GXV
> 
> ___
> time-nuts mailing list -- time-nuts@lists.febo.com
> To unsubscribe, go to 
> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> and follow the instructions there.


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[time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)

[Ulf Kylenfall via time-nuts]

 
Many monts ago I approached the list regarding an Oscilloquartz 
8600-3(945.860.011.03 s/n 422) 5 MHz Ovenized Crystal Oscillator. It had aged 
and was 1 Hz off and couldnot be braught back to 5.000.000 MHz.
Since I did not have "an account" with Oscilloquartz or what they are 
calledtoday, I was not able to get any help from them.
There was one answer off the list from someone who could possibly helpbut that 
person either forgot or did not have any relevant informationto share.
A box with the dismantled unit has been laying on my shelf for months and I am 
therefore asking again. If there is no information about thisunit available I 
will scrap it. I do not know of any other forumto ask.
Best Regards

Ulf KylenfallSM6GXV

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