[time-nuts] GPSDO - was - oscillator choice question
Richard W. Solomon
w1ksz at earthlink.net
Mon May 17 21:52:47 UTC 2010
Will the boards be available for purchase ? I would like to
build two of them.
73, Dick, W1KSZ
-----Original Message-----
>From: ernieperes at aol.com
>Sent: May 17, 2010 4:58 PM
>To: time-nuts at febo.com
>Subject: Re: [time-nuts] GPSDO - was - oscillator choice question
>
>
>
>Hi,
>
>there is a modified W5OJM GPSDO and all the PCB and so on......please see the flwng link
>
>http://pagesperso-orange.fr/f5cau/base_temps_gps_f5cau/page_basegpsF5CAU.htm
>
>Basically a well designed mods of the above idea.......and no special parts..... and it runs from 10MHz.....
>
>Rgds Ernie.
>
>
>
>
>
>
>-----Original Message-----
>From: Bob Camp <lists at rtty.us>
>To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
>Sent: Mon, May 17, 2010 3:40 am
>Subject: Re: [time-nuts] GPSDO - was - oscillator choice question
>
>
>Hi
>Part of the issue is that some of the thinking on GPSDO's dates back to the era
>f selective availability on GPS. Designs from that era need to be upgraded to
>eally get them to be all they can be with SA turned off.
>Bob
>
>n May 16, 2010, at 9:19 PM, Stanley Reynolds wrote:
>> Parts for the Brooks Sheera W5OJM design are getting hard to find also need
>he extra divider mod for the 10 Mhz OCXO
>
> The James Miller G3RUH design is popular for simple if you have the right GPS
>eceiver with 100Khz out.
>
> VE2ZAZ design has a few issues with ground loops ( a fix is out there) and
>sing the same buffer for all outputs, may also need a buffer amp for the 10811,
>nother mod would be a separate voltage regulator for the ECC voltage.
>
> I think all three designs would fall short for most on the list, but for me it
>s hard to tell the difference.
>
> Did you have another design in mind ?
>
> Stanley
>
>
> <snip>
>
>
> Now I am reading Time-nuts history and I see that
> there is no consensus on which of the popular/published GPSDO
> configurations is the best return on effort and expense.
> That is rather disappointing.
>
> Any comments on that before I just flip a coin?
>
> <snip>
>
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
>
>______________________________________________
>ime-nuts mailing list -- time-nuts at febo.com
>o unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>nd follow the instructions there.
>
>_______________________________________________
>time-nuts mailing list -- time-nuts at febo.com
>To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>and follow the instructions there.
More information about the time-nuts
mailing list