User Guide

RH-27

Troubleshooting - Antennas CCS Technical Documentation

Figure 3: RH-27 (6225) antenna cap with and without radiator

If the antenna cap is missing or there is a cap but it has no radiator, install a new

antenna cap with radiator. If the radiator looks obviously damaged (dents, corrosion) or

the slot in the radiator has a significantly different shape, then install a new antenna cap

with correct radiator.

If no antenna or no radiator is installed, the antenna gain will be degraded by more than

25 dB.

Missing GPS antenna, damaged GPS feed/ground pin or damaged heatstick

Figure 4: Back view of RH-27 (6225) C-cover with GPS antenna assembled

RH-27 GPS antenna is heat-staked to the C-cover. If any of the following events occurs,

the entire C-cover assembly should be replaced with a new one:

1 GPS antenna is missing

2 GPS antenna looks obviously damaged

3 Any of the three heat stakes appears damaged; the GPS antenna will be loose

4 Any of the three heat stakes are over-heated and GPS antenna melts into the

C-cover; antenna will look distorted and bent

5 Either GPS antenna feed or ground leg is broken or bent so that either pin will

not touch the PWB.

Antenna

radiato

GPS antenna

Heat stake of

GPS antenna

GPS

round

GPS

feed pin