[time-nuts] Nortel Trimble thunderbolt

[Bob Camp]

Hi

"ANTENNA OPEN" = antenna isn't drawing the current it should. 

You may have a low current antenna / the sense resistor may be shorted / the sense ADC is blown. 

Fast check - put a tee in series with the antenna. Terminate the open port with a 200 to 400 ohm resistor.  If the problem does not go away, it's not a low current antenna. If it switches to "antenna overload" then it's almost certainly a low current antenna. 

Bob

On Jul 6, 2013, at 4:59 PM, Jim Sanford <wb4gcs at wb4gcs.org> wrote:

> All:
> 
> I suspected I had some stupid setting wrong . . . . . well, close. Turns out the port labelled COMM1 is in fact, COMM2.  Once I figured that out, both LadyHeather and TBOLTmon communicate.  Now I have to figure out why, after acquiring a LOCK yesterday, today it is declarning, ANTENNA OPEN.
> 
> Thanks for all the help!
> 
> 73,
> Jim
> wb4gcs at amsat.org
> 
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