April 7th 2013
Kanger ramp survey, LC phase center is 191.24 cm above the ramp surface
For the surveys we take an average measured height TO THE VERY TOP CENTER OF THE GREY CAP ON THE ANTENNA from 4 positions around the car, both before and after the survey. The average measured height was - 200.57cm
Ashtech choke ring model 701945 rev E
FYI - For this antenna, the LC (dual-freq) phase center is 4.65 cm above the bottom of the antenna's preamp, or 5.43 cm below the top of the choke rings (the antenna is 10.08 cm from bottom of preamp to top of choke rings). The top of the little gray radome is 3.9 cm above the top of the choke rings, or 9.33 cm above the LC phase center.