As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO OBTAIN HF CHECK ON 5547 11282. BITE TESTED BOTH HF TRANCEIVERS AND BOTH OPS CHECK GOOD BOTH HF TRANSMISSION AND RECEPTION WITH DEFFERENT FREQS OPS CHECK GOOD REF MM 23 11 00. RECEIVED SELCAL CALL FROM SFO ARINC COMM CENTER, OPS CHECK GOOD. USED 6640 MHZ.