PS
paul swed
Wed, Dec 3, 2014 11:04 PM
Have successfully tapped into the clean 10 MHz of the the Lucent and using
a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
don't see anything down to at least 65 db. Thats the best detail the HP
8568B will allow.
To get the signal out of the Lucent I sliced the 15 Mhz trace and injected
the 10 Mhz into the SMA output connector.
I am sure there are many other amplifiers and methods that could be used
but this ones working well and can drive some real coax lengths.
Now the really hard part. Mounting it and the power supply into a rack
panel.
Regards
Paul
WB8TSL
Have successfully tapped into the clean 10 MHz of the the Lucent and using
a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
don't see anything down to at least 65 db. Thats the best detail the HP
8568B will allow.
To get the signal out of the Lucent I sliced the 15 Mhz trace and injected
the 10 Mhz into the SMA output connector.
I am sure there are many other amplifiers and methods that could be used
but this ones working well and can drive some real coax lengths.
Now the really hard part. Mounting it and the power supply into a rack
panel.
Regards
Paul
WB8TSL
GH
Gerhard Hoffmann
Thu, Dec 4, 2014 12:33 AM
Am 04.12.2014 um 00:04 schrieb paul swed:
Have successfully tapped into the clean 10 MHz of the the Lucent and using
a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
don't see anything down to at least 65 db. Thats the best detail the HP
8568B will allow.
Congrats!
Can't help to ask some questions:
The MTI-260, is that a CMOS level or a sine output version on 5 MHz?
Where I'm right now, I have the Lucent pair, one of them dismantled,
but no power supply & no scope, that has to wait until the weekend.
I'd like to make a small board that directly takes the 5 MHz from the
Osc, buffers it, doubles it with the NIST FET doubler and provides 4 SMA
+12dBm outputs at 10 MHz via 4*AD8009 or LMH6702.
There is enough free space on the front plate.
I'd like to hear that the osc delivers a sine, since that makes
doubling easier.
BTW I have another 10 MHz MTI-260 and did measure phase noise with
an E5052B. That was not so funny. Probably it's orientiented towards
long term stability at the cost of noise with absolutely minimum crystal
dissipation. I'd like to repeat the measurement under better controlled
environmental conditions b4 I tell numbers.
But it seems that Morion rulez, noise-wise.
regards, Gerhard
Am 04.12.2014 um 00:04 schrieb paul swed:
> Have successfully tapped into the clean 10 MHz of the the Lucent and using
> a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
> spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
> don't see anything down to at least 65 db. Thats the best detail the HP
> 8568B will allow.
Congrats!
Can't help to ask some questions:
The MTI-260, is that a CMOS level or a sine output version on 5 MHz?
Where I'm right now, I have the Lucent pair, one of them dismantled,
but no power supply & no scope, that has to wait until the weekend.
I'd like to make a small board that directly takes the 5 MHz from the
Osc, buffers it, doubles it with the NIST FET doubler and provides 4 SMA
+12dBm outputs at 10 MHz via 4*AD8009 or LMH6702.
There is enough free space on the front plate.
I'd like to hear that the osc delivers a sine, since that makes
doubling easier.
BTW I have another 10 MHz MTI-260 and did measure phase noise with
an E5052B. That was not so funny. Probably it's orientiented towards
long term stability at the cost of noise with absolutely minimum crystal
dissipation. I'd like to repeat the measurement under better controlled
environmental conditions b4 I tell numbers.
But it seems that Morion rulez, noise-wise.
regards, Gerhard
DR
Doug Ronald
Thu, Dec 4, 2014 12:36 AM
I may have missed this info in a previous post, but I am interested in tapping off the 5 MHz signal. I have my REF-1 apart, but don't have it powered. I will buffer the signal, and suspect the 5 MHz is available right around Q205, but it might be up around Q204 or Q203. Could someone advise me as to exactly where to pick off a nice 5 MHz sine wave?
Thanks,
-Doug R.
-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of paul swed
Sent: Wednesday, December 03, 2014 3:05 PM
To: Time-nuts
Subject: [time-nuts] Lucent KS-24361 10 Mhz out success.
Have successfully tapped into the clean 10 MHz of the the Lucent and using a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I don't see anything down to at least 65 db. Thats the best detail the HP 8568B will allow.
To get the signal out of the Lucent I sliced the 15 Mhz trace and injected the 10 Mhz into the SMA output connector.
I am sure there are many other amplifiers and methods that could be used but this ones working well and can drive some real coax lengths.
Now the really hard part. Mounting it and the power supply into a rack panel.
Regards
Paul
WB8TSL
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.
I may have missed this info in a previous post, but I am interested in tapping off the 5 MHz signal. I have my REF-1 apart, but don't have it powered. I will buffer the signal, and suspect the 5 MHz is available right around Q205, but it might be up around Q204 or Q203. Could someone advise me as to exactly where to pick off a nice 5 MHz sine wave?
Thanks,
-Doug R.
-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of paul swed
Sent: Wednesday, December 03, 2014 3:05 PM
To: Time-nuts
Subject: [time-nuts] Lucent KS-24361 10 Mhz out success.
Have successfully tapped into the clean 10 MHz of the the Lucent and using a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I don't see anything down to at least 65 db. Thats the best detail the HP 8568B will allow.
To get the signal out of the Lucent I sliced the 15 Mhz trace and injected the 10 Mhz into the SMA output connector.
I am sure there are many other amplifiers and methods that could be used but this ones working well and can drive some real coax lengths.
Now the really hard part. Mounting it and the power supply into a rack panel.
Regards
Paul
WB8TSL
_______________________________________________
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.
BC
Bob Camp
Thu, Dec 4, 2014 12:40 AM
Hi
Be careful when you do this.
A signal with harmonics 20 db down and sub-harmonics 30 db down will make a fine reference input for a counter / signal generator / spectrum analyzer.
A signal with a 1 second ADEV of 5x10^-10 will look absolutely perfect on any spectrum analyzer ever made. It will not be a good a reference for an instrument as a source at 5x10^-12.
Close in phase noise / ADEV is what you need to set up to check. A relative test is fine ( divide 10 by 2 and compare to 5), but that’s what you need to check
Bob
On Dec 3, 2014, at 6:04 PM, paul swed paulswedb@gmail.com wrote:
Have successfully tapped into the clean 10 MHz of the the Lucent and using
a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
don't see anything down to at least 65 db. Thats the best detail the HP
8568B will allow.
To get the signal out of the Lucent I sliced the 15 Mhz trace and injected
the 10 Mhz into the SMA output connector.
I am sure there are many other amplifiers and methods that could be used
but this ones working well and can drive some real coax lengths.
Now the really hard part. Mounting it and the power supply into a rack
panel.
Regards
Paul
WB8TSL
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.
Hi
Be careful when you do this.
A signal with harmonics 20 db down and sub-harmonics 30 db down will make a fine reference input for a counter / signal generator / spectrum analyzer.
A signal with a 1 second ADEV of 5x10^-10 will look absolutely perfect on any spectrum analyzer ever made. It will not be a good a reference for an instrument as a source at 5x10^-12.
Close in phase noise / ADEV is what you need to set up to check. A relative test is fine ( divide 10 by 2 and compare to 5), but that’s what you need to check
Bob
> On Dec 3, 2014, at 6:04 PM, paul swed <paulswedb@gmail.com> wrote:
>
> Have successfully tapped into the clean 10 MHz of the the Lucent and using
> a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
> spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
> don't see anything down to at least 65 db. Thats the best detail the HP
> 8568B will allow.
>
> To get the signal out of the Lucent I sliced the 15 Mhz trace and injected
> the 10 Mhz into the SMA output connector.
>
> I am sure there are many other amplifiers and methods that could be used
> but this ones working well and can drive some real coax lengths.
>
> Now the really hard part. Mounting it and the power supply into a rack
> panel.
> Regards
> Paul
> WB8TSL
> _______________________________________________
> 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.
AR
Anthony Roby
Thu, Dec 4, 2014 1:24 AM
Paul - could you elaborate on where you made the connections? A few photos perhaps?
Nice work,
Anthony
-----Original Message-----
On Dec 3, 2014, at 6:04 PM, paul swed paulswedb@gmail.com wrote:
Have successfully tapped into the clean 10 MHz of the the Lucent and
using a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave
out. Any spurs are down at least 43 db. Close in at 4Khz total span or
500 Hz/div I don't see anything down to at least 65 db. Thats the best
detail the HP 8568B will allow.
To get the signal out of the Lucent I sliced the 15 Mhz trace and
injected the 10 Mhz into the SMA output connector.
I am sure there are many other amplifiers and methods that could be
used but this ones working well and can drive some real coax lengths.
Now the really hard part. Mounting it and the power supply into a rack
panel.
Regards
Paul
WB8TSL
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.
Paul - could you elaborate on where you made the connections? A few photos perhaps?
Nice work,
Anthony
-----Original Message-----
> On Dec 3, 2014, at 6:04 PM, paul swed <paulswedb@gmail.com> wrote:
>
> Have successfully tapped into the clean 10 MHz of the the Lucent and
> using a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave
> out. Any spurs are down at least 43 db. Close in at 4Khz total span or
> 500 Hz/div I don't see anything down to at least 65 db. Thats the best
> detail the HP 8568B will allow.
>
> To get the signal out of the Lucent I sliced the 15 Mhz trace and
> injected the 10 Mhz into the SMA output connector.
>
> I am sure there are many other amplifiers and methods that could be
> used but this ones working well and can drive some real coax lengths.
>
> Now the really hard part. Mounting it and the power supply into a rack
> panel.
> Regards
> Paul
> WB8TSL
> _______________________________________________
> 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
Thu, Dec 4, 2014 1:37 AM
Bob
I agree with your comments.
For the test gear on the bench this will be very fine.
Regards
Paul
WB8TSL
On Wed, Dec 3, 2014 at 7:40 PM, Bob Camp kb8tq@n1k.org wrote:
Hi
Be careful when you do this.
A signal with harmonics 20 db down and sub-harmonics 30 db down will make
a fine reference input for a counter / signal generator / spectrum analyzer.
A signal with a 1 second ADEV of 5x10^-10 will look absolutely perfect on
any spectrum analyzer ever made. It will not be a good a reference for an
instrument as a source at 5x10^-12.
Close in phase noise / ADEV is what you need to set up to check. A
relative test is fine ( divide 10 by 2 and compare to 5), but that’s what
you need to check
Bob
On Dec 3, 2014, at 6:04 PM, paul swed paulswedb@gmail.com wrote:
Have successfully tapped into the clean 10 MHz of the the Lucent and
a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div
don't see anything down to at least 65 db. Thats the best detail the HP
8568B will allow.
To get the signal out of the Lucent I sliced the 15 Mhz trace and
the 10 Mhz into the SMA output connector.
I am sure there are many other amplifiers and methods that could be used
but this ones working well and can drive some real coax lengths.
Now the really hard part. Mounting it and the power supply into a rack
panel.
Regards
Paul
WB8TSL
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
and follow the instructions there.
Bob
I agree with your comments.
For the test gear on the bench this will be very fine.
Regards
Paul
WB8TSL
On Wed, Dec 3, 2014 at 7:40 PM, Bob Camp <kb8tq@n1k.org> wrote:
> Hi
>
> Be careful when you do this.
>
> A signal with harmonics 20 db down and sub-harmonics 30 db down will make
> a fine reference input for a counter / signal generator / spectrum analyzer.
>
> A signal with a 1 second ADEV of 5x10^-10 will look absolutely perfect on
> any spectrum analyzer ever made. It will not be a good a reference for an
> instrument as a source at 5x10^-12.
>
> Close in phase noise / ADEV is what you need to set up to check. A
> relative test is fine ( divide 10 by 2 and compare to 5), but that’s what
> you need to check
>
> Bob
>
> > On Dec 3, 2014, at 6:04 PM, paul swed <paulswedb@gmail.com> wrote:
> >
> > Have successfully tapped into the clean 10 MHz of the the Lucent and
> using
> > a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
> > spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div
> I
> > don't see anything down to at least 65 db. Thats the best detail the HP
> > 8568B will allow.
> >
> > To get the signal out of the Lucent I sliced the 15 Mhz trace and
> injected
> > the 10 Mhz into the SMA output connector.
> >
> > I am sure there are many other amplifiers and methods that could be used
> > but this ones working well and can drive some real coax lengths.
> >
> > Now the really hard part. Mounting it and the power supply into a rack
> > panel.
> > Regards
> > Paul
> > WB8TSL
> > _______________________________________________
> > 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
Thu, Dec 4, 2014 1:40 AM
On the output of the crystal oscillator you will want to buffer it and then
do whatever you like. Its a sine wave and as I recall of fair level several
volts. I did see a bit of distortion on the sine wave. It can be obtained
at J8 the unpopulated jack.
Now back to putting it in its case.
Regards
Paul
WB8TSL
On Wed, Dec 3, 2014 at 7:33 PM, Gerhard Hoffmann dk4xp@arcor.de wrote:
Am 04.12.2014 um 00:04 schrieb paul swed:
Have successfully tapped into the clean 10 MHz of the the Lucent and using
a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
don't see anything down to at least 65 db. Thats the best detail the HP
8568B will allow.
Congrats!
Can't help to ask some questions:
The MTI-260, is that a CMOS level or a sine output version on 5 MHz?
Where I'm right now, I have the Lucent pair, one of them dismantled,
but no power supply & no scope, that has to wait until the weekend.
I'd like to make a small board that directly takes the 5 MHz from the
Osc, buffers it, doubles it with the NIST FET doubler and provides 4 SMA
+12dBm outputs at 10 MHz via 4*AD8009 or LMH6702.
There is enough free space on the front plate.
I'd like to hear that the osc delivers a sine, since that makes
doubling easier.
BTW I have another 10 MHz MTI-260 and did measure phase noise with
an E5052B. That was not so funny. Probably it's orientiented towards
long term stability at the cost of noise with absolutely minimum crystal
dissipation. I'd like to repeat the measurement under better controlled
environmental conditions b4 I tell numbers.
But it seems that Morion rulez, noise-wise.
regards, Gerhard
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.
On the output of the crystal oscillator you will want to buffer it and then
do whatever you like. Its a sine wave and as I recall of fair level several
volts. I did see a bit of distortion on the sine wave. It can be obtained
at J8 the unpopulated jack.
Now back to putting it in its case.
Regards
Paul
WB8TSL
On Wed, Dec 3, 2014 at 7:33 PM, Gerhard Hoffmann <dk4xp@arcor.de> wrote:
> Am 04.12.2014 um 00:04 schrieb paul swed:
>
>> Have successfully tapped into the clean 10 MHz of the the Lucent and using
>> a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
>> spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
>> don't see anything down to at least 65 db. Thats the best detail the HP
>> 8568B will allow.
>>
>
> Congrats!
>
>
> Can't help to ask some questions:
> The MTI-260, is that a CMOS level or a sine output version on 5 MHz?
> Where I'm right now, I have the Lucent pair, one of them dismantled,
> but no power supply & no scope, that has to wait until the weekend.
>
> I'd like to make a small board that directly takes the 5 MHz from the
> Osc, buffers it, doubles it with the NIST FET doubler and provides 4 SMA
> +12dBm outputs at 10 MHz via 4*AD8009 or LMH6702.
> There is enough free space on the front plate.
> I'd like to hear that the osc delivers a sine, since that makes
> doubling easier.
>
> BTW I have another 10 MHz MTI-260 and did measure phase noise with
> an E5052B. That was not so funny. Probably it's orientiented towards
> long term stability at the cost of noise with absolutely minimum crystal
> dissipation. I'd like to repeat the measurement under better controlled
> environmental conditions b4 I tell numbers.
> But it seems that Morion rulez, noise-wise.
>
> regards, Gerhard
>
>
>
> _______________________________________________
> 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.
>
BC
Bob Camp
Thu, Dec 4, 2014 1:46 AM
On Dec 3, 2014, at 7:33 PM, Gerhard Hoffmann dk4xp@arcor.de wrote:
Am 04.12.2014 um 00:04 schrieb paul swed:
Have successfully tapped into the clean 10 MHz of the the Lucent and using
a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
don't see anything down to at least 65 db. Thats the best detail the HP
8568B will allow.
Congrats!
Can't help to ask some questions:
The MTI-260, is that a CMOS level or a sine output version on 5 MHz?
Where I'm right now, I have the Lucent pair, one of them dismantled,
but no power supply & no scope, that has to wait until the weekend.
I'd like to make a small board that directly takes the 5 MHz from the
Osc, buffers it, doubles it with the NIST FET doubler and provides 4 SMA
+12dBm outputs at 10 MHz via 4*AD8009 or LMH6702.
There is enough free space on the front plate.
I'd like to hear that the osc delivers a sine, since that makes
doubling easier.
BTW I have another 10 MHz MTI-260 and did measure phase noise with
an E5052B. That was not so funny. Probably it's orientiented towards
long term stability at the cost of noise with absolutely minimum crystal
dissipation. I'd like to repeat the measurement under better controlled
environmental conditions b4 I tell numbers.
But it seems that Morion rulez, noise-wise.
The OCXO in the TBolt beats the Morion parts by a wide margin.
Bob
Hi
> On Dec 3, 2014, at 7:33 PM, Gerhard Hoffmann <dk4xp@arcor.de> wrote:
>
> Am 04.12.2014 um 00:04 schrieb paul swed:
>> Have successfully tapped into the clean 10 MHz of the the Lucent and using
>> a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any
>> spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I
>> don't see anything down to at least 65 db. Thats the best detail the HP
>> 8568B will allow.
>
> Congrats!
>
>
> Can't help to ask some questions:
> The MTI-260, is that a CMOS level or a sine output version on 5 MHz?
> Where I'm right now, I have the Lucent pair, one of them dismantled,
> but no power supply & no scope, that has to wait until the weekend.
>
> I'd like to make a small board that directly takes the 5 MHz from the
> Osc, buffers it, doubles it with the NIST FET doubler and provides 4 SMA
> +12dBm outputs at 10 MHz via 4*AD8009 or LMH6702.
> There is enough free space on the front plate.
> I'd like to hear that the osc delivers a sine, since that makes
> doubling easier.
>
> BTW I have another 10 MHz MTI-260 and did measure phase noise with
> an E5052B. That was not so funny. Probably it's orientiented towards
> long term stability at the cost of noise with absolutely minimum crystal
> dissipation. I'd like to repeat the measurement under better controlled
> environmental conditions b4 I tell numbers.
> But it seems that Morion rulez, noise-wise.
The OCXO in the TBolt beats the Morion parts by a wide margin.
Bob
>
> regards, Gerhard
>
>
> _______________________________________________
> 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.
DI
David I. Emery
Thu, Dec 4, 2014 1:50 AM
On Wed, Dec 03, 2014 at 08:46:58PM -0500, Bob Camp wrote:
But it seems that Morion rulez, noise-wise.
The OCXO in the TBolt beats the Morion parts by a wide margin.
That implies all Tbolts have the same OCXO... is that actually
true of most of the surplus ones ? Weren't there varients in
some of the early lots at least ?
And there certainly were widely different date codes...
--
Dave Emery N1PRE/AE, die@dieconsulting.com DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in
celebration of what could have been, but wasn't and is not to be now either."
On Wed, Dec 03, 2014 at 08:46:58PM -0500, Bob Camp wrote:
> > But it seems that Morion rulez, noise-wise.
>
> The OCXO in the TBolt beats the Morion parts by a wide margin.
That implies all Tbolts have the same OCXO... is that actually
true of most of the surplus ones ? Weren't there varients in
some of the early lots at least ?
And there certainly were widely different date codes...
--
Dave Emery N1PRE/AE, die@dieconsulting.com DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in
celebration of what could have been, but wasn't and is not to be now either."
BC
Bob Camp
Thu, Dec 4, 2014 1:56 AM
Hi
For phase noise, they all are quite good, the newer ones are a bit better. For ADEV and wander, the newer (post 2002) parts are the better bet.
Bob
On Dec 3, 2014, at 8:50 PM, David I. Emery die@dieconsulting.com wrote:
On Wed, Dec 03, 2014 at 08:46:58PM -0500, Bob Camp wrote:
But it seems that Morion rulez, noise-wise.
The OCXO in the TBolt beats the Morion parts by a wide margin.
That implies all Tbolts have the same OCXO... is that actually
true of most of the surplus ones ? Weren't there varients in
some of the early lots at least ?
And there certainly were widely different date codes...
--
Dave Emery N1PRE/AE, die@dieconsulting.com DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in
celebration of what could have been, but wasn't and is not to be now either."
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.
Hi
For phase noise, they all are quite good, the newer ones are a bit better. For ADEV and wander, the newer (post 2002) parts are the better bet.
Bob
> On Dec 3, 2014, at 8:50 PM, David I. Emery <die@dieconsulting.com> wrote:
>
> On Wed, Dec 03, 2014 at 08:46:58PM -0500, Bob Camp wrote:
>
>>> But it seems that Morion rulez, noise-wise.
>>
>> The OCXO in the TBolt beats the Morion parts by a wide margin.
>
> That implies all Tbolts have the same OCXO... is that actually
> true of most of the surplus ones ? Weren't there varients in
> some of the early lots at least ?
>
> And there certainly were widely different date codes...
>
> --
> Dave Emery N1PRE/AE, die@dieconsulting.com DIE Consulting, Weston, Mass 02493
> "An empty zombie mind with a forlorn barely readable weatherbeaten
> 'For Rent' sign still vainly flapping outside on the weed encrusted pole - in
> celebration of what could have been, but wasn't and is not to be now either."
>
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