Miles jmi...@pop.net
To: les...@veenstras.com; Discussion of precise time and frequency
measurement time-nuts@febo.com
Cc: q...@yahoogroups.com; 'David' n7...@yahoo.com
Sent: Wednesday, September 22, 2010 4:34 AM
Subject: Re: [time-nuts] [qs1r] Looking for good, cheap, external reference
Hi
Hi
That's the good temperature sensor.
Since Trimble never bothered to get the other one working, apparently the
difference between the two didn't matter to the firmware / end application. The
high resolution is certainly a lot more useful to me.
Bob
On Sep 22, 2010, at 10:18 PM, Mark J.
Hi,
I'm interested in doing some ionospheric research, but I don't
want to break
the bank with an $8,000 USD GPS disciplined Rubidium clock.
Anyone have some ideas on cheaper alternatives?
Suggest getting one of these, or another one like it:
Hi
Are you interested in 24 hour stability or something longer than that?
Bob
On Sep 22, 2010, at 1:42 AM, Lester Veenstra wrote:
From: q...@yahoogroups.com [mailto:q...@yahoogroups.com] On Behalf Of David
Sent: Tuesday, September 21, 2010 10:55 PM
To: q...@yahoogroups.com
Lester Veenstra wrote:
From: q...@yahoogroups.com [mailto:q...@yahoogroups.com] On Behalf Of David
Sent: Tuesday, September 21, 2010 10:55 PM
To: q...@yahoogroups.com
Subject: [qs1r] Looking for good, cheap, external reference
Hi,
I'm interested in doing some ionospheric
Hello Lester,
To expand on Bob's message a little, do you need medium to
long-term accuracy (for a frequency counter reference for example), or
something that is both accurate AND has low phase noise, suitable for
multiplying up to GigaHertz, say, for communications? Particularly if
the
, September 22, 2010 9:27 AM
To: les...@veenstras.com; Discussion of precise time and frequency
measurement
Subject: Re: [time-nuts] [qs1r] Looking for good, cheap, external reference
Hello Lester,
To expand on Bob's message a little, do you need medium to
long-term accuracy (for a frequency
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Peter Vince
Sent: Wednesday, September 22, 2010 2:27 PM
To: les...@veenstras.com; Discussion of precise time and frequency
measurement
Subject: Re: [time-nuts] [qs1r] Looking for good
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Bob Camp
Sent: Wednesday, September 22, 2010 5:06 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] [qs1r] Looking for good, cheap, external reference
John, unless I am going mad, the ADEV plots for both auctions you
mentioned look the same - maybe the bad one has been replaced since
you posted your message?
The black-and-white plot that everybody uses is from the original
Thunderbolt data sheet, which was way conservative even for the
measurement
time-nuts@febo.com; David n7...@yahoo.com
Sent: Wed, September 22, 2010 12:42:06 PM
Subject: Re: [time-nuts] [qs1r] Looking for good, cheap, external reference
John, unless I am going mad, the ADEV plots for both auctions you
mentioned look the same - maybe the bad one has been
...@yahoo.com
Sent: Wed, September 22, 2010 12:42:06 PM
Subject: Re: [time-nuts] [qs1r] Looking for good, cheap, external reference
John, unless I am going mad, the ADEV plots for both auctions you
mentioned look the same - maybe the bad one has been replaced since
you posted your
...@yahoo.com
Sent: Wed, September 22, 2010 12:42:06 PM
Subject: Re: [time-nuts] [qs1r] Looking for good, cheap, external reference
John, unless I am going mad, the ADEV plots for both auctions you
mentioned look the same - maybe the bad one has been replaced since
you posted your message
, September 22, 2010 6:39 PM
Subject: Re: [time-nuts] [qs1r] Looking for good, cheap, external reference
And if you buy a newer unit with the better oscillator, new firmware, and
newer (but brain-dead) temperature sensor, it's trivial to replace the
sensor. It took me longer to take the unit apart
- From: Ed Palmer ed_pal...@sasktel.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, September 22, 2010 6:39 PM
Subject: Re: [time-nuts] [qs1r] Looking for good, cheap, external reference
And if you buy a newer unit with the better oscillator
Hi
The black box TBolt is the real version. The one with the chromate box is the
upside down version. It's pretty obvious which is which looking at things
like the 9 pin D connector. Rumor has it that a very large customer designed
their box backwards and the upside down part came into being
On Sep 22, 2010, at 5:57 PM, Bob Camp wrote:
The temp sensor is the one that moves in real small steps. The bad one moves
in (1/2 degree???) big steps.
All of that (and much more) is visible if you bring up Lady Heather and see
what's going on.
My TBolt has the 3.0 firmware and the
Does the temperature move around a little or is it a flat, straight
line? If it never moves, it's probably the bad one. As Bob mentions
below, the temperature only changes in large steps with the bad
sensor. The good one has steps in the millidegree range. I got my
chips from
On Sep 22, 2010, at 7:50 PM, Ed Palmer wrote:
Does the temperature move around a little or is it a flat, straight
line? If it never moves, it's probably the bad one. As Bob mentions
below, the temperature only changes in large steps with the bad
sensor. The good one has steps in
From: q...@yahoogroups.com [mailto:q...@yahoogroups.com] On Behalf Of David
Sent: Tuesday, September 21, 2010 10:55 PM
To: q...@yahoogroups.com
Subject: [qs1r] Looking for good, cheap, external reference
Hi,
I'm interested in doing some ionospheric research, but I don't want to
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