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Anybody have a writeup on converting a TT3 to a TT3+ ?


 

A few people in the local ham club are getting interested in putting trackers on a few
event vehicles (foot race and bicycle race sag wagons and similar).

I've been hoarding a few TT3s and a couple of GPS18s and was going to donate them
but they will have to be upgraded to power the GPS18LVC (which needs 5vDC in at about 60ma).

Before I reinvent the wheel does anybody have a writeup on converting a TT3 to a TT3+ ?
Something like a photo of the PC board with an arrow point at the trace to cut and instructions
on where to put the regulator and what traces to connect it to, etc, etc, etc.

Thanks in advance

Mike


 

Not really a writeup.? See photos!

Remove J7 (Solder Bridge)
Solder 7805 to J1
Connect 7805 IN to J1 Pin7
Connect 7805 Gnd to J1 Pin6
Connect 7805 OUT to J2 Pin4

Dennis
VK4ZDS