[time-nuts] Thunderbolt Lives

David Ackrill dave.g0dja at tiscali.co.uk
Tue Jul 22 12:47:01 EDT 2008

Well, setting up the Trimble software was quite straight forward, and 
I've got nearly all Green on the alarms.

The only two yellowed are "Self Survey Activity" and "Stored Possition". 
  I'll do some reading of the manual before I go messing with any of the 

Next thing to do is save up for the 10GHz transceiver that this will be 
used to keep on frequency, and think about making some form of portable 
power supply.

Has anyone done any tests as to how far out voltages on the +12 and -12 
Volt lines can go before the Thunderbolt goes out of lock?  One of the 
problems with using batteries out in the field is the weight.  However, 
I guess I could probably manage a couple of lightweight 12V Gell Cells 
in series, and then some voltage regulators to give the 3 rails for the 
supply.  Seeing that the power requirement isn't that great on the mains 
PSU, I would guess that a well charged, small, pair of gell cells would do?

Dave (G0DJA)

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