SCRAPER AS-BOTTOM 1418434 - Caterpillar

The coax wiring between the radio and external antenna cannot extend further than 4.5 m (14.76 ft).
Check wiring connections from the radio to the external antenna.
Loose or broken wire found. Repair the connection, perform a communication check, and return to service.
Wiring is OK. Proceed to Step 2.
Measure the distance from the radio to the external antenna.
If the coax wiring is over 4.5 m (14.76 ft), replace the coax extension with a shorter extension. Refer to Special Instruction, REHS9757, "Installation Procedure for Product Link PL241 Systems" for preferred coax extension part numbers.
The distance from the radio to the external antenna is less than 4.5 m (14.76 ft). Proceed to Step 3.
Replace any coax extension between the radio, and the external antenna.
Issue resolved. Perform a communication check, and return to service.
Issue not resolved. Proceed to Step 4.
Replace the external antenna.
Issue resolved. Perform a communication check, and return to service.
Issue not resolved. Proceed to Step 5.
Replace the radio.
Issue resolved. Perform a communication check, and return to service.
Issue not resolved. Proceed to Step 6.
Submit a DSN ticket.