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73, Dick, W1KSZ
-Original Message-
From: Hal Murray hmur...@megapathdsl.net
Sent: Oct 15, 2010 8:15 PM
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Subject: Re: [time-nuts] Discipline a rubidium driven
E-pay
-Original Message-
From: Richard W. Solomon w1...@earthlink.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sat, Oct 16, 2010 8:47 pm
Subject: Re: [time-nuts] Discipline a rubidium driven net4501 with a Garmin LVC
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Hi,
out of curiosity I want to build a ntp timeserver. I can remember some
epxerimets I carried out with a DCF77 receiver and a Cobalt Qube years
ago, however this never really worked out.
My plan is to buy a soekris net4501
(http://soekris.eu/shop/net4501/net4501_30_board_only_en.html)
Many... but a lot boils down to the fact that the Tbolt is designed from the
ground up to be a time (and frequency) source. Its 1PPS output can be stable
to within a few nanoseconds and the frequency to a few parts per trillion. The
Garmin 1PPS output is spec'd at 1 microsecond, plus you
Nothing wrong with wanting to use a Rb as the clock source for the board. I
*almost* decided to go that route since I had a spare
LPRO sitting around. But I realized that I would never need that long of
hold-over so it would kind of be a waste. I've been looking
at some cheap ($20 USD) 1PPM TCXO
Hi Jason,
Have a look on ebay.280567398921.
quite good TCXO.
Rgds Ernie.
-Original Message-
From: Jason Rabel ja...@extremeoverclocking.com
To: time-nuts@febo.com
Sent: Fri, Oct 15, 2010 9:10 pm
Subject: Re: [time-nuts] Discipline a rubidium driven net4501 with a Garmin
Actually I was planning on getting a 33.8688 MHz TCXO, apparently there's a few
sellers with them because they are used for
audiophiles in their CD players? That way I don't have to use a clock-block or
other circuitry to get a usable frequency.
Have a look on ebay.280567398921. quite
Search for RUBIDIUM and you will also find a guy selling a divider card that
takes the LPRO output and generates several clocks, including 1 Hz...
cheaper and more versatile than the FATPPS
A 1 Hz clock derived from a rubidium isn't synchronized to UTC second ticks.
The PPS pulse out of a
