As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH VHF COMMS INOPERATIVE AFTER TAKEOFF. TOWER REPORTS THEY WERE ABLE TO HEAR THE ACFT BUT CREW REPORTS THEY WERE UNABLE TO HEAR TOWER. EMERGENCY DECLARED AND RETURNED TO DEPARTURE. LANDING UNEVENTFUL. R & R NR 1 VHF TRANSCEIVER & ACCOMPLISHED INSTALLATION CHECK IAW AMM 23-12-21. SYS CHECKED NORMAL.