[time-nuts] Any CW12-TIM users?

Ed Palmer ed_palmer at sasktel.net
Fri Jul 9 15:58:14 UTC 2010


Hello John,

I have a CW-12, but  haven't built it into anything yet.  Here's some 
info I posted recently on the 10 MHz output.

http://www.febo.com/pipermail/time-nuts/2010-June/048196.html

Also, Navsync has an application note that talks about cleaning up the 
10 MHz output.  Basically, they're saying to set up a GPSDO.

http://www.navsync.com/docs/AN03_GPS_Timing.pdf

My unit has the Motorola software load so I'm using WinOnCore to talk to 
it.  If you have a unit with the NMEA load, there are lots of programs 
that you can use.  The documentation says that it does a self-survey, 
but it seems that to get the best TRAIM Sigma values, I have to send 
some commands.  I haven't gotten to the bottom of that yet.

Ed

John Green wrote:
> I seem to remember someone saying they had actually tried one. I am looking
> to put another repeater on the air and while I have another TBOLT, I like
> the fact that the CW12-TIM takes a single supply. Of course, I'll have to
> have 5 volts to power the antenna but I can get the 3 volts for the CW12
> from that. The 10 MHz output doesn't have to be as stable as a TBOLT, it
> just needs to be GPS locked. It doesn't have to have holdover. If it loses
> GPS lock, it would be OK if it just stopped putting out 10 MHz. Also, do I
> have to get special software to talk to it? Or, hopefully, it just does a
> self survey automatically and I won't have to fool with it.
>
>   



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