What was found
BOTH HF1 HF2 RADIOS UNABLE TO TXMT - WE CAN RECEIVE OK - ALL FRE QS AND MODES OF TXMT SAMETRIED PLANE TO PLANE HF RADIO CHECK, WAS ABLE TO RECEIVE, BUT COULD NOT TRANSMIT USING BOTH #1 & #2 HF. CHECKED CAPT AND FO HF1& HF2, BOTH RECEIVE ONLY. SLAVED IN HF1 XCVR FOR T/S. NO FIX, PROBLEM REMAINS THE SAME.REINSTALLED ORIGINAL HF1 XCVR. NOTED FO ACP HF2 MIC SELECTOR STICKY. REPLACED FO ACP PER AMM 23-51-02, PANEL TEST GOOD, HF STILL NO ADD EMP:410032, 332423 PANEL, AUDIO SE OFF 29-2351-9-0003 1517 ON 29-2351-9-0003 1378 TRANSMIT. HF1 & HF2 DO NOT TRANSMIT FROM CAPT OR FO ACP. DEFER PER MEL 2311B. MX ACTION C/W DISPATCH DESK: 6 NAME: JB DATE: 27-AUG-24- NOC DESK: 737 NAME: ADAM DATE: 27-AUG-24- TOMC APPROVED. DEFERRED PER MEL 2311B. PART TAG PICS ADDED TRIED NEW REU, NO FIX. PUT BACK ORIGINAL REU. SUSPECT BOTH ANTENNA COUPLERS. REF AMM 23-51-01/401 ENSURE COAX CONNECTORS ON HF1 AND HF2 ARE NOT LOOSE/DAMAGED. ADDITIONALLY, ENSURE CROSS TALK WIRES W7061-0018-22 AND W7061-0017-22 (REF WDM 23-11-11-9) ARE NOT LOOSE/DAMAGED.