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From: "Michael A. Terrell"
Subject: Re: Better than 2ppm TCXO for <$25?
Date: Tue, 29 Oct 2002 09:21:40 -0500
Organization: Have you seen my bench? No, really! Where is it?
X-Mailer: Mozilla 4.61 [en]C-CCK-MCD (Win95; U)
References: <3DBCCE7E.1000802@BOGUS.earthlink.net> <3DBDD3EC.A8284D62@mfi.net> <3DBE246E.9040309@BOGUS.earthlink.net>
Chris Carlen wrote:
> Michael A. Terrell wrote:
> > http://www.atmel.com/atmel/acrobat/doc3aa62ed049766.pdf
> > http://www.atmel.com/atmel/acrobat/doc3ab765cae58cc.pdf
> Hmm, this is very interesting. I have sometimes been curious to attempt
> dealing with the WWVB. I'll consider it for future projects, but it's a
> little more involved than I want to get for this one.
> Christopher R. Carlen
> Suse 7.3 Linux 2.4.10
I'm not sure where you are located, but I get good signal levels in
Central Florida since NIST upgraded their transmitter and antennas.
You can use a small ferrite loopstick antenna with one of those chips
and a small processor to create your drive signals. You can even add
Daylight Savings Time and multiple alarms.
If you sample the RF before they extract the time code you can use
the carrier for a frequency standard by dividing by six, then multiply
it up to 1, 5, or 10 Mhz for a very accurate lab standard by phase
locking the standard to the 10 KHz (You would use a TVCXO to generate
Michael A. Terrell
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