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Re: [time-nuts] RFX GPSDO - Anybody played with one of these?

S
SAIDJACK@aol.com
Tue, Oct 2, 2012 7:34 PM

Hi Paul,

yes, it's a promotional tool, we did not put it on the website yet. We did
put the GPSOCXO/GPSTCXO page on there though, and the GPSTCXO is used on
that  eval kit. Even though it is "only" a very high-end TCXO, it's
performance is  quite good, especially when encased in a small plastic bag etc to keep
airflow  away from it.

TVB has done some measurements on this board, and I think he may have a
page with the results on his website somewhere.

Here is the GPSTCXO eval board photo, the user manual is too big to be
posted to this list, let me know if you want me to send it off-list to  you.

The eval board has a 10MHz LVCMOS output on the BNC connector, supports a
USB connection for power, NMEA, SCPI, and 1PPS interface, and has a solder
point  for the LVCMOS 1PPS output. It also has a connector for optional
exernal 4V to  8V power supplies, and comes with an antenna, a USB cable, a CD
with software an  manuals, and a quick-start instruction sheet.

Hope that helps,
Said

In a message dated 10/2/2012 12:24:29 Pacific Daylight Time,
paulswedb@gmail.com writes:

Said
I was looking and did not see the eval kit on the  sight???
Thanks
Paul
WB8TSL

On Tue, Oct 2, 2012 at 12:29 PM,  Bob Camp lists@rtty.us wrote:

Hi

The rated  temperature stability of the OCXO is not "super good". You will
see  more frequency shift on it than say the TBolt OCXO, far more than a
DOCXO.

That's not at all saying it's a bad part. For Time Nut  duty, I would try

to

keep it in a fairly benign ambient  situation.

Bob

-----Original  Message-----
From: time-nuts-bounces@febo.com  [mailto:time-nuts-bounces@febo.com] On
Behalf Of Jim Lux
Sent:  Tuesday, October 02, 2012 9:04 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] RFX GPSDO - Anybody played with one of  these?

On 10/2/12 5:08 AM, Azelio Boriani wrote:

Yes, I agree.

On Tue, Oct 2, 2012 at 1:29 PM, Bob  Camp lists@rtty.us wrote:

Hi

The OCXO probably isn't going to do very well with  the outdoor

temperature

swings.

Bob

Why not..  granted it's easier with large mass and large insulation, but
ultimately, it's all about the closed loop gain of the temperature
control loop.  With small mass, the time lag effects will be small,  at
least.


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Hi Paul, yes, it's a promotional tool, we did not put it on the website yet. We did put the GPSOCXO/GPSTCXO page on there though, and the GPSTCXO is used on that eval kit. Even though it is "only" a very high-end TCXO, it's performance is quite good, especially when encased in a small plastic bag etc to keep airflow away from it. TVB has done some measurements on this board, and I think he may have a page with the results on his website somewhere. Here is the GPSTCXO eval board photo, the user manual is too big to be posted to this list, let me know if you want me to send it off-list to you. The eval board has a 10MHz LVCMOS output on the BNC connector, supports a USB connection for power, NMEA, SCPI, and 1PPS interface, and has a solder point for the LVCMOS 1PPS output. It also has a connector for optional exernal 4V to 8V power supplies, and comes with an antenna, a USB cable, a CD with software an manuals, and a quick-start instruction sheet. Hope that helps, Said In a message dated 10/2/2012 12:24:29 Pacific Daylight Time, paulswedb@gmail.com writes: Said I was looking and did not see the eval kit on the sight??? Thanks Paul WB8TSL On Tue, Oct 2, 2012 at 12:29 PM, Bob Camp <lists@rtty.us> wrote: > Hi > > The rated temperature stability of the OCXO is not "super good". You will > see more frequency shift on it than say the TBolt OCXO, far more than a > DOCXO. > > That's not at all saying it's a bad part. For Time Nut duty, I would try to > keep it in a fairly benign ambient situation. > > Bob > > -----Original Message----- > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On > Behalf Of Jim Lux > Sent: Tuesday, October 02, 2012 9:04 AM > To: time-nuts@febo.com > Subject: Re: [time-nuts] RFX GPSDO - Anybody played with one of these? > > On 10/2/12 5:08 AM, Azelio Boriani wrote: > > Yes, I agree. > > > > On Tue, Oct 2, 2012 at 1:29 PM, Bob Camp <lists@rtty.us> wrote: > > > >> Hi > >> > >> The OCXO probably isn't going to do very well with the outdoor > temperature > >> swings. > >> > >> Bob > >> > > Why not.. granted it's easier with large mass and large insulation, but > ultimately, it's all about the closed loop gain of the temperature > control loop. With small mass, the time lag effects will be small, at > least. > > > > > _______________________________________________ > 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 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.
PS
paul swed
Tue, Oct 2, 2012 9:20 PM

Said
I have to say I was looking through the list of modules that are available.
I guess a couple of things really jump out.
The low power consumption and what you get in terms of behaviors. It is
pretty amazing actually. Though I have my power sucking Tbolt and 3801.
But I could easily see for a Amateur radio operator just getting into time
nuttery that these might be a nice way to go. I guess that would open an
interesting debate. Getting the used RBs at Hamfest of questionable quality
for $200 or far less. Or something modern and simply works.
Regards
Paul.

On Tue, Oct 2, 2012 at 3:34 PM, SAIDJACK@aol.com wrote:

Hi Paul,

yes, it's a promotional tool, we did not put it on the website yet. We did
put the GPSOCXO/GPSTCXO page on there though, and the GPSTCXO is used on
that  eval kit. Even though it is "only" a very high-end TCXO, it's
performance is  quite good, especially when encased in a small plastic bag
etc to keep
airflow  away from it.

TVB has done some measurements on this board, and I think he may have a
page with the results on his website somewhere.

Here is the GPSTCXO eval board photo, the user manual is too big to be
posted to this list, let me know if you want me to send it off-list to
you.

The eval board has a 10MHz LVCMOS output on the BNC connector, supports a
USB connection for power, NMEA, SCPI, and 1PPS interface, and has a solder
point  for the LVCMOS 1PPS output. It also has a connector for optional
exernal 4V to  8V power supplies, and comes with an antenna, a USB cable,
a CD
with software an  manuals, and a quick-start instruction sheet.

Hope that helps,
Said

In a message dated 10/2/2012 12:24:29 Pacific Daylight Time,
paulswedb@gmail.com writes:

Said
I was looking and did not see the eval kit on the  sight???
Thanks
Paul
WB8TSL

On Tue, Oct 2, 2012 at 12:29 PM,  Bob Camp lists@rtty.us wrote:

Hi

The rated  temperature stability of the OCXO is not "super good". You

will

see  more frequency shift on it than say the TBolt OCXO, far more than a
DOCXO.

That's not at all saying it's a bad part. For Time Nut  duty, I would try

to

keep it in a fairly benign ambient  situation.

Bob

-----Original  Message-----
From: time-nuts-bounces@febo.com  [mailto:time-nuts-bounces@febo.com] On
Behalf Of Jim Lux
Sent:  Tuesday, October 02, 2012 9:04 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] RFX GPSDO - Anybody played with one of  these?

On 10/2/12 5:08 AM, Azelio Boriani wrote:

Yes, I agree.

On Tue, Oct 2, 2012 at 1:29 PM, Bob  Camp lists@rtty.us wrote:

Hi

The OCXO probably isn't going to do very well with  the outdoor

temperature

swings.

Bob

Why not..  granted it's easier with large mass and large insulation, but
ultimately, it's all about the closed loop gain of the temperature
control loop.  With small mass, the time lag effects will be small,  at
least.


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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To unsubscribe, go to
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and follow the  instructions there.


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To unsubscribe, go to
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and follow the instructions there.

Said I have to say I was looking through the list of modules that are available. I guess a couple of things really jump out. The low power consumption and what you get in terms of behaviors. It is pretty amazing actually. Though I have my power sucking Tbolt and 3801. But I could easily see for a Amateur radio operator just getting into time nuttery that these might be a nice way to go. I guess that would open an interesting debate. Getting the used RBs at Hamfest of questionable quality for $200 or far less. Or something modern and simply works. Regards Paul. On Tue, Oct 2, 2012 at 3:34 PM, <SAIDJACK@aol.com> wrote: > Hi Paul, > > yes, it's a promotional tool, we did not put it on the website yet. We did > put the GPSOCXO/GPSTCXO page on there though, and the GPSTCXO is used on > that eval kit. Even though it is "only" a very high-end TCXO, it's > performance is quite good, especially when encased in a small plastic bag > etc to keep > airflow away from it. > > TVB has done some measurements on this board, and I think he may have a > page with the results on his website somewhere. > > Here is the GPSTCXO eval board photo, the user manual is too big to be > posted to this list, let me know if you want me to send it off-list to > you. > > The eval board has a 10MHz LVCMOS output on the BNC connector, supports a > USB connection for power, NMEA, SCPI, and 1PPS interface, and has a solder > point for the LVCMOS 1PPS output. It also has a connector for optional > exernal 4V to 8V power supplies, and comes with an antenna, a USB cable, > a CD > with software an manuals, and a quick-start instruction sheet. > > Hope that helps, > Said > > > In a message dated 10/2/2012 12:24:29 Pacific Daylight Time, > paulswedb@gmail.com writes: > > Said > I was looking and did not see the eval kit on the sight??? > Thanks > Paul > WB8TSL > > On Tue, Oct 2, 2012 at 12:29 PM, Bob Camp <lists@rtty.us> wrote: > > > Hi > > > > The rated temperature stability of the OCXO is not "super good". You > will > > see more frequency shift on it than say the TBolt OCXO, far more than a > > DOCXO. > > > > That's not at all saying it's a bad part. For Time Nut duty, I would try > to > > keep it in a fairly benign ambient situation. > > > > Bob > > > > -----Original Message----- > > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On > > Behalf Of Jim Lux > > Sent: Tuesday, October 02, 2012 9:04 AM > > To: time-nuts@febo.com > > Subject: Re: [time-nuts] RFX GPSDO - Anybody played with one of these? > > > > On 10/2/12 5:08 AM, Azelio Boriani wrote: > > > Yes, I agree. > > > > > > On Tue, Oct 2, 2012 at 1:29 PM, Bob Camp <lists@rtty.us> wrote: > > > > > >> Hi > > >> > > >> The OCXO probably isn't going to do very well with the outdoor > > temperature > > >> swings. > > >> > > >> Bob > > >> > > > > Why not.. granted it's easier with large mass and large insulation, but > > ultimately, it's all about the closed loop gain of the temperature > > control loop. With small mass, the time lag effects will be small, at > > least. > > > > > > > > > > _______________________________________________ > > 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 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. >
BD
Bill Dailey
Tue, Oct 2, 2012 11:07 PM

I went with something modern that haut works (fury). But bitten by time buttery and now trying to discipline a very good OCXO with a fury board.  Quite challenging actually.  Having to balance  noise etc.

Sent from mobile

On Oct 2, 2012, at 4:20 PM, paul swed paulswedb@gmail.com wrote:

Said
I have to say I was looking through the list of modules that are available.
I guess a couple of things really jump out.
The low power consumption and what you get in terms of behaviors. It is
pretty amazing actually. Though I have my power sucking Tbolt and 3801.
But I could easily see for a Amateur radio operator just getting into time
nuttery that these might be a nice way to go. I guess that would open an
interesting debate. Getting the used RBs at Hamfest of questionable quality
for $200 or far less. Or something modern and simply works.
Regards
Paul.

On Tue, Oct 2, 2012 at 3:34 PM, SAIDJACK@aol.com wrote:

Hi Paul,

yes, it's a promotional tool, we did not put it on the website yet. We did
put the GPSOCXO/GPSTCXO page on there though, and the GPSTCXO is used on
that  eval kit. Even though it is "only" a very high-end TCXO, it's
performance is  quite good, especially when encased in a small plastic bag
etc to keep
airflow  away from it.

TVB has done some measurements on this board, and I think he may have a
page with the results on his website somewhere.

Here is the GPSTCXO eval board photo, the user manual is too big to be
posted to this list, let me know if you want me to send it off-list to
you.

The eval board has a 10MHz LVCMOS output on the BNC connector, supports a
USB connection for power, NMEA, SCPI, and 1PPS interface, and has a solder
point  for the LVCMOS 1PPS output. It also has a connector for optional
exernal 4V to  8V power supplies, and comes with an antenna, a USB cable,
a CD
with software an  manuals, and a quick-start instruction sheet.

Hope that helps,
Said

In a message dated 10/2/2012 12:24:29 Pacific Daylight Time,
paulswedb@gmail.com writes:

Said
I was looking and did not see the eval kit on the  sight???
Thanks
Paul
WB8TSL

On Tue, Oct 2, 2012 at 12:29 PM,  Bob Camp lists@rtty.us wrote:

Hi

The rated  temperature stability of the OCXO is not "super good". You

will

see  more frequency shift on it than say the TBolt OCXO, far more than a
DOCXO.

That's not at all saying it's a bad part. For Time Nut  duty, I would try

to

keep it in a fairly benign ambient  situation.

Bob

-----Original  Message-----
From: time-nuts-bounces@febo.com  [mailto:time-nuts-bounces@febo.com] On
Behalf Of Jim Lux
Sent:  Tuesday, October 02, 2012 9:04 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] RFX GPSDO - Anybody played with one of  these?

On 10/2/12 5:08 AM, Azelio Boriani wrote:

Yes, I agree.

On Tue, Oct 2, 2012 at 1:29 PM, Bob  Camp lists@rtty.us wrote:

Hi

The OCXO probably isn't going to do very well with  the outdoor

temperature

swings.

Bob

Why not..  granted it's easier with large mass and large insulation, but
ultimately, it's all about the closed loop gain of the temperature
control loop.  With small mass, the time lag effects will be small,  at
least.


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
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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
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To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

I went with something modern that haut works (fury). But bitten by time buttery and now trying to discipline a very good OCXO with a fury board. Quite challenging actually. Having to balance noise etc. Sent from mobile On Oct 2, 2012, at 4:20 PM, paul swed <paulswedb@gmail.com> wrote: > Said > I have to say I was looking through the list of modules that are available. > I guess a couple of things really jump out. > The low power consumption and what you get in terms of behaviors. It is > pretty amazing actually. Though I have my power sucking Tbolt and 3801. > But I could easily see for a Amateur radio operator just getting into time > nuttery that these might be a nice way to go. I guess that would open an > interesting debate. Getting the used RBs at Hamfest of questionable quality > for $200 or far less. Or something modern and simply works. > Regards > Paul. > > On Tue, Oct 2, 2012 at 3:34 PM, <SAIDJACK@aol.com> wrote: > >> Hi Paul, >> >> yes, it's a promotional tool, we did not put it on the website yet. We did >> put the GPSOCXO/GPSTCXO page on there though, and the GPSTCXO is used on >> that eval kit. Even though it is "only" a very high-end TCXO, it's >> performance is quite good, especially when encased in a small plastic bag >> etc to keep >> airflow away from it. >> >> TVB has done some measurements on this board, and I think he may have a >> page with the results on his website somewhere. >> >> Here is the GPSTCXO eval board photo, the user manual is too big to be >> posted to this list, let me know if you want me to send it off-list to >> you. >> >> The eval board has a 10MHz LVCMOS output on the BNC connector, supports a >> USB connection for power, NMEA, SCPI, and 1PPS interface, and has a solder >> point for the LVCMOS 1PPS output. It also has a connector for optional >> exernal 4V to 8V power supplies, and comes with an antenna, a USB cable, >> a CD >> with software an manuals, and a quick-start instruction sheet. >> >> Hope that helps, >> Said >> >> >> In a message dated 10/2/2012 12:24:29 Pacific Daylight Time, >> paulswedb@gmail.com writes: >> >> Said >> I was looking and did not see the eval kit on the sight??? >> Thanks >> Paul >> WB8TSL >> >> On Tue, Oct 2, 2012 at 12:29 PM, Bob Camp <lists@rtty.us> wrote: >> >>> Hi >>> >>> The rated temperature stability of the OCXO is not "super good". You >> will >>> see more frequency shift on it than say the TBolt OCXO, far more than a >>> DOCXO. >>> >>> That's not at all saying it's a bad part. For Time Nut duty, I would try >> to >>> keep it in a fairly benign ambient situation. >>> >>> Bob >>> >>> -----Original Message----- >>> From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On >>> Behalf Of Jim Lux >>> Sent: Tuesday, October 02, 2012 9:04 AM >>> To: time-nuts@febo.com >>> Subject: Re: [time-nuts] RFX GPSDO - Anybody played with one of these? >>> >>> On 10/2/12 5:08 AM, Azelio Boriani wrote: >>>> Yes, I agree. >>>> >>>> On Tue, Oct 2, 2012 at 1:29 PM, Bob Camp <lists@rtty.us> wrote: >>>> >>>>> Hi >>>>> >>>>> The OCXO probably isn't going to do very well with the outdoor >>> temperature >>>>> swings. >>>>> >>>>> Bob >>>>> >>> >>> Why not.. granted it's easier with large mass and large insulation, but >>> ultimately, it's all about the closed loop gain of the temperature >>> control loop. With small mass, the time lag effects will be small, at >>> least. >>> >>> >>> >>> >>> _______________________________________________ >>> 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 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 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.