As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN'S RA DOES NOT PROPERLY AGREE WITH FO'S RA. DURING TROUBLESHOOTING NR 1 R/A WOULD FLUCTUATE BETWEEN 150FT AND 450FT, THEN GO ABOVE 2500FT. DISCONNECTED BOTH TRANSMIT AND RECEIVING ANTENNAS AND METERED BOTH COAX CABLES FROM NR 1 R/A RACK CONNECTOR (1SA1) NR 1, RECEIVING ANTENNA (5SA1) READ OPEN, NR 1 TRANSMITTER ANTENNA (4SA1) READ HIGH RESISTANCE TO GROUND. SUSPECT NR 1 TRANSMIT ANTENNA COAX CONNECTOR BAD.