Chris wrote:
I wonder what you gain by this? You still need the GPS to provide a
reference. Either you use its 1Hz or 10MHz output. Then you compare the
phase of these to the phase o the TCXO and adjust the TCXO until the phase
is constant relative to the reference.
Certainly if you start
Bob wrote:
We successfully "replaced" an internal low-quality TCXO with an external
T-Bolt signal with much help from Time Nuts; but one guy called me up and
suggested we discipline the INTERNAL oscillator instead of replacing it with
an external signal.
Whether or not this is a good idea depe
On 2013-11-08 18:07, Peter Gottlieb wrote:
Maybe he means fixed vs. automatic gain (or threshold)? Perhaps a
worry about picking up higher frequency noise on a lower frequency but
larger signal you are looking to measure?
Peter
The problem is the opposite. Low frequency noise will wipe
out m
Maybe he means fixed vs. automatic gain (or threshold)? Perhaps a worry about
picking up higher frequency noise on a lower frequency but larger signal you are
looking to measure?
Peter
On 11/8/2013 8:38 PM, gandal...@aol.com wrote:
In a message dated 09/11/2013 01:30:14 GMT Standard Time,
h
On 2013-11-08 17:38, gandal...@aol.com wrote:
What do static and dynamic mean in that context? Is it the same as
DRAM
vs
SRAM? If so, I don't see any obvious way that translates into one
works
The MB510 looks to be a series of flip-flops so presumably would be
classified as a static d
bob.burch...@eeontheweb.com said:
> Anyone know if the Serial DB-9 port on a T-Bolt can provide us with GPS
> clock time for a dual purpose? We use the 10 MHz now to create a TCXO
> replacement in a VHF radio (makes for good simulcast clock lock so they are
> all on channel) but now we need to syn
In a message dated 09/11/2013 01:30:14 GMT Standard Time,
hmur...@megapathdsl.net writes:
rich...@karlquist.com said:
> This high sensitivity is probably a bad thing, not a good thing. It is
> indicative of a dynamic divider. For a frequency counter prescaler, you
> want a static divider,
rich...@karlquist.com said:
> This high sensitivity is probably a bad thing, not a good thing. It is
> indicative of a dynamic divider. For a frequency counter prescaler, you
> want a static divider, such as the HP5386 used. Dynamic dividers make errors
> if the signal being measured has a broadb
Hi Rick
As far as I'm aware this is pretty much a copy of the HP original which
used a Fujitsu, or similar, MB510-PF prescaler, so a sort of "what you see is
what you get" situation:-)
Regards
Nigel
GM8PZR
In a message dated 09/11/2013 00:03:58 GMT Standard Time,
rich...@karlquist
Wouldn't an attenuator solve that?
On 11/8/2013 7:03 PM, Richard Karlquist wrote:
On 2013-11-08 15:49, gandal...@aol.com wrote:
At 1000 MHz, the highest frequency I can generate right now, I've measured
the channel 3 input sensitivity as -50dBm with a sinusoidal signal.
Regards
Nigel
GM8PZ
On 2013-11-08 15:49, gandal...@aol.com wrote:
At 1000 MHz, the highest frequency I can generate right now, I've
measured
the channel 3 input sensitivity as -50dBm with a sinusoidal signal.
Regards
Nigel
GM8PZR
This high sensitivity is probably a bad thing, not a good thing.
It is indic
I wonder what you gain by this? You still need the GPS to provide a
reference. Either you use it's 1Hz or 10MHz output. Then you compare the
phase of these to the phase o the TCXO and adjust the TCXO until the phase
is constant relative to the reference. The instrument still needs the
signal
I suppose this might be a bit off topic, but for those of us with these HP
counters there's been very good deal running on 3GHz extender boards on
Ebay for the past few weeks.
These aren't HP originals but they are new plug 'n play alternatives,
certainly a very good clone, and excellent va
We successfully "replaced" an internal low-quality TCXO with an external
T-Bolt signal with much help from Time Nuts; but one guy called me up and
suggested we discipline the INTERNAL oscillator instead of replacing it with
an external signal. I think his name was Bill (but can't remember for sure!
Hi,
I used to have notes on how to select which output frequency the EG&G
RFS-10-7 provides but I can't find them!
It can be 5 or 10 Mhz.
Does anybody know where the selection is made?
Thanks,
Corby Dawson
___
time-nuts mailing list -- time-nuts@feb
I am holding out for the "Leapsecond" version to be available to the public
with low Phase Noise 10MHz, 5MHz, And 1PPS outputs, and the built in adapter
with low jitter 44.1KHz and 192KHz outputs for my home entertainment system.
Thomas Knox
> Date: Fri, 8 Nov 2013 17:25:49 +
> From: aife
hello,
Couldn't find a reference in the mailling list so i put here the link to
news:
http://upstart.bizjournals.com/companies/rebel-brands/2013/11/01/john-patterson-bathys-atomic-watch.html?page=all
Good for collector's of wristwatches i imagine... ;)
Cheers,
Andre Esteves
___
Money has been sent - Paypal
On Fri, Nov 8, 2013 at 11:00 AM, Mart Sakalov wrote:
> Hello.
>
> Yes please. PAYPAL only.
>
> Best regards
> Mart
>
>
> From: time-nuts-boun...@febo.com [time-nuts-boun...@febo.com] on behalf
> of Gerald Chafee [gcha...@gmail
Usually new OCXOs from distributors are expensive parts (low noise
being a premium feature)... if you have to use them professionally OK
otherwise you have no other way than the usual auction site.
On Fri, Nov 8, 2013 at 4:55 PM, HagaaarTheHorrible
wrote:
> Thanks for the replies!
> Doesn't sound
Yes it is easy to set up. The Thunderbolt users the "Palisade" NTP
reference clock driver.
Then of course NTP will keep all your systems running on the same time.
It sounds like maybe you were going to invent your own network based time
sync system? Don't do that.
On Thu, Nov 7, 2013 at 11:13
Money has been sent via Paypal
On Fri, Nov 8, 2013 at 10:07 AM, wrote:
>
> Hi All,
> We acquired a T-Bolt from an estate , its untested, seal is
> unbroken, it might be good or might be Drek, but in either event its free
> to someone for postage from 97113 to the lower 48.
>It will fi
Thanks for the replies!
Doesn't sound too good I'm afraid... in addition to the shipping issues, I
wonder if it was the right decision to use this OCXO...
Are there any "low phase noise" OCXO available (preferably from stock) from
more "conventional" sellers? (i.e. distributors/online shops base
Hello.
Yes please. PAYPAL only.
Best regards
Mart
From: time-nuts-boun...@febo.com [time-nuts-boun...@febo.com] on behalf of
Gerald Chafee [gcha...@gmail.com]
Sent: Friday, 08 November 2013 4:16 PM
To: Discussion of precise time and frequency measurement
I would be interested,
Gerald Chafee
On Fri, Nov 8, 2013 at 10:07 AM, wrote:
>
> Hi All,
> We acquired a T-Bolt from an estate , its untested, seal is
> unbroken, it might be good or might be Drek, but in either event its free
> to someone for postage from 97113 to the lower 48.
>It
Are you looking for a Paypal payment for postage?
Gerald Chafee
On Fri, Nov 8, 2013 at 10:07 AM, wrote:
>
> Hi All,
> We acquired a T-Bolt from an estate , its untested, seal is
> unbroken, it might be good or might be Drek, but in either event its free
> to someone for postage from 9711
If you need my info I would be glad to contact you direct. Maybe I could
throw in a little extra.
Gerald Chafee
On Fri, Nov 8, 2013 at 10:07 AM, wrote:
>
> Hi All,
> We acquired a T-Bolt from an estate , its untested, seal is
> unbroken, it might be good or might be Drek, but in either e
Sorry, didn't see the Oregon address. I'll happily pay for shipping to
California.
Tom
Sent from my HTC Inspire™ 4G on AT&T
- Reply message -
From: ashle...@aol.com
To:
Subject: [time-nuts] HP Z3817A Reverse Engineering
Date: Fri, Nov 8, 2013 7:07 am
Hi All,
We acquired a T-B
I'm certainly interested. I'm in the general zip code area, so I can pick up.
Call me at 714 402-1280.
Thanks, Tom
Sent from my HTC Inspire™ 4G on AT&T
- Reply message -
From: ashle...@aol.com
To:
Subject: [time-nuts] HP Z3817A Reverse Engineering
Date: Fri, Nov 8, 2013 7:07 am
H
Anyone know if the Serial DB-9 port on a T-Bolt can provide us with GPS
clock time for a dual purpose? We use the 10 MHz now to create a TCXO
replacement in a VHF radio (makes for good simulcast clock lock so they are
all on channel) but now we need to synchronize the rest of the system using
store
Hi All,
We acquired a T-Bolt from an estate , its untested, seal is unbroken, it
might be good or might be Drek, but in either event its free to someone for
postage from 97113 to the lower 48.
It will fit into a USPS Small Rate Box for $6.
We could ship it international, but at this p
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