PLT BEHAVIOR UNPROFESSIONAL ATTITUDE.

Narrative

UPON DEPARTING FROM LAX ARPT; AS I WAS TAXIING OUT; I WENT THROUGH MY TAXI OUT AND TKOF CHKLIST ITEMS (TIME; BOOST PUMP; LIGHTS; MIXTURE; XPONDER; AND DIRECTIONAL GYROSCOPE). TKOF OCCURRED WITHOUT INCIDENT. ABOUT 2 MINS AFTER TKOF I WAS INFORMED THAT I WAS DEPARTING THE TCA; AND FREQ CHANGE WAS APPROVED; AND TO HAVE A NICE NIGHT. AT THIS POINT I TURNED OFF THE COM RADIO; SINCE IT WAS NOT NECESSARY TO SPEAK TO ANYONE FOR AWHILE. WHEN I WAS OVER EL TORO MARINE AIR BASE; I CONTACTED ONT APCH WITH MY INTENTION FOR LNDG AT ONT. I WAS GIVEN A CODE FOR MY XPONDER; AND AS I WAS DIALING THE CODE IN; I NOTICED THAT THE SELECTION KNOB OF THE XPONDER WAS SET IN BTWN 'ON' AND 'ALT.' I CANNOT BE POSITIVE EITHER THAT MY XPONDER WAS SENDING A SIGNAL OR NOT; THOUGH I WAS IMMEDIATELY IDENTED BY ONT AFTER I HAD INPUTTED MY SQUAWK. I WAS GIVEN AN IMMEDIATE TKOF FROM LAX; AND I SHOULD HAVE DOUBLE-CHKED EVERYTHING ONCE AIRBORNE; THOUGH I FEEL THAT IF MY XPONDER WAS NOT XMITTING A SIGNAL; IT WAS NOT POSING A SAFETY THREAT; SINCE AT XA00 AM; CLR SKIES; AND AT LEAST 50 MI VISIBILITY AT ALT; AND NO OTHER TFC EVER SPOTTED DURING THE ENTIRE FLT; MY IDENT WAS SOMEWHAT TRIVIAL. AWARENESS OF EVERYTHING IS NECESSARY AT ALL TIMES!