What was found
UNABLE TO TRANSMIT ON #1 HF RADIO. RECEIVER OK. GROUNDED - YES. RESET #1 HF RADIO SYSTEM OPS NORMAL REF B737-800 AMM 23-11-00. GND VERIFICATION SUCCESSFUL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UNABLE TO TRANSMIT ON #1 HF RADIO. RECEIVER OK. GROUNDED - YES. RESET #1 HF RADIO SYSTEM OPS NORMAL REF B737-800 AMM 23-11-00. GND VERIFICATION SUCCESSFUL.