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Trimble Active GPS Puck Antenna


I got a couple of Trimble active GPS antennas from a buddy who picked up a bag of them at a Ham swap really cheap. He gave me a couple. This is a Trimble model 28367-70. It's an old model design for use on the US GPS system only.

I checked the antenna on a bench top and measured the current draw at around 20mA at 5VDC to the antenna supplied over the coax cable.


There are newer models that will work with US and other GPS systems that looks very similar. I have no idea what these cost new, likely expensive.


The signal from US GPS satellites is rather weak and a preamp is recommended for more than a very short coax cable run. I want to use this with my AT-D578UV III Plus in place of the cheap included GPS puck antenna. The included one doesn't look like it's made for outdoors installation while the Trimble unit is.  I needed to order a cable with a male TNC connector on one end for the antenna and a male SMA connector on the other end using 15 foot length of RG-316 coax to mate up with the radio.

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Misc. Radio Gear

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