Re: [time-nuts] Brooks Shera
Another great ham passes on, I'm sorry I never had a chance to meet him.
Is the GPS controller that Brooks published still useful today, or has it been
superseded by something newer? I have a Motorola GPS receiver (PVT-6) with 1
pps output, and an HP oscillator (model number escapes me at the moment). I
also have one of the $30 ebay rubidium modules (FE-5680A) that were discussed
here in previous years. I only need a controller to tie them all together.
Should I build Brooks' circuit to work with my old Motorola PVT-6 or should I
look for something else (perhaps one of the Jupiter receivers with 10 kHz
output)? The D/A chip in his design seems to be obsolete, his archived web
site says to contact him for the chip but we can't do that anymore. Are they
still available?
Dan Schultz N8FGV
On Mon, 25 Mar 2013 00:43:02 -0400
"Daniel Schultz" n8fgv@usa.net wrote:
Another great ham passes on, I'm sorry I never had a chance to meet him.
Definitly a sad day....
Is the GPS controller that Brooks published still useful today, or has it been
superseded by something newer?
That highly depends on what you want and what you need.
Shera's design is definitly one of the simplest GPSDOs out there.
And with that it defines what the lowest complexity to get something
accurate is. If the performance of this circuit is enough for you,
i wouldn't go for anything else. Of course, if you need better performance
or want to tinker and see what can be done with home made equipment, then
you should go for different circuits.
Attila Kinali
--
The people on 4chan are like brilliant psychologists
who also happen to be insane and gross.
-- unknown
I think Brooks' design is worth studying. It is simple enough and
uses 20 year old technology so even use old folks can follow how it
works. Then you go off and build something else using current parts
I have one of those cheaper Rb units too. But you set them by sending
a command over the serial port. Not by a control voltage. The DAC is
internal to the unit. I plan to use a $5 TI Launch Pad. But
basically the same over all ideas he used. At $5 each with shipping
included TI is losing money. The device is self programming via a
USB connection.
On Sun, Mar 24, 2013 at 9:43 PM, Daniel Schultz n8fgv@usa.net wrote:
Another great ham passes on, I'm sorry I never had a chance to meet him.
Is the GPS controller that Brooks published still useful today, or has it been
superseded by something newer? I have a Motorola GPS receiver (PVT-6) with 1
pps output, and an HP oscillator (model number escapes me at the moment). I
also have one of the $30 ebay rubidium modules (FE-5680A) that were discussed
here in previous years. I only need a controller to tie them all together.
Should I build Brooks' circuit to work with my old Motorola PVT-6 or should I
look for something else (perhaps one of the Jupiter receivers with 10 kHz
output)? The D/A chip in his design seems to be obsolete, his archived web
site says to contact him for the chip but we can't do that anymore. Are they
still available?
Dan Schultz N8FGV
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--
Chris Albertson
Redondo Beach, California
Chris,
Can you point me to the web site where the TI Launch Pad is sold for $5 including
shipping ?
Thank you,
Bill....WB6BNQ
Chris Albertson wrote:
snip
I plan to use a $5 TI Launch Pad. But
basically the same over all ideas he used. At $5 each with shipping
included TI is losing money. The device is self programming via a
USB connection.
snip
--
Chris Albertson
Redondo Beach, California
time-nuts mailing list -- time-nuts@febo.com
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and follow the instructions there.
Hello Bill.
Here link : http://www.ti.com/ww/en/launchpad/overview_head.html
10 - 13$ TI kits.
Regards.
-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of WB6BNQ
Sent: Monday, March 25, 2013 10:01 AM
To: Discussion of precise time and frequency measurement; Chris Albertson
Subject: Re: [time-nuts] Brooks Shera
Chris,
Can you point me to the web site where the TI Launch Pad is sold for $5
including
shipping ?
Thank you,
Bill....WB6BNQ
Chris Albertson wrote:
snip
I plan to use a $5 TI Launch Pad. But
basically the same over all ideas he used. At $5 each with shipping
included TI is losing money. The device is self programming via a
USB connection.
snip
--
Chris Albertson
Redondo Beach, California
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
and follow the instructions there.
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