SMA ENTR SAN TCA.

Narrative

DEPARTED TOA IFR FLT TO LTO BAJA VIA MZB TIJ LTO DIRECT. ON REACHING VFR; IFR CANCELLED AND ON TOP OF LOW STRATUS OVCST LORAN/VOR/DME USED FOR NAV DIRECT TO MZB. ALT 9500; Q1200/C INBND ON MZB 300 DEG R. CALL TO SAN APR ABEAM OCN VOR - APR COM. WAS BUSY WITH 'TOP GUN' TFC OUT OF MIRAMAR NAS. WHEN APR WAS FINALLY CONTACTED (2-3 MINS); WE REQUESTED VFR TCA HANDLING. INFORMED WE WERE ALREADY WITHIN THE TCA WERE GIVEN A SQUAWK AND TOLD TO PROCEED ON COURSE VFR AT 9500. NO FURTHER ACTION WAS TAKEN. NO OTHER ACFT WERE OBSERVED AND NO TARGETS WERE CALLED OUT. THIS UNINTENTIONAL INTRUSION WAS PRECIPITATED BY: 1) FLYING ON TOP. NO GND REF. 2) A TAILWIND. HIGHER G/S. 3) DELAY ON FREQ DUE TO MULTIPLE ACFT. 4) INABILITY TO QUICKLY AND EASILY DETERMINE DME DISTANCE AND PROPER FREQS ON BOTH VFR AND IFR CHARTS. COMMENT. MY RECOMMENDATION IS THAT TCA'S; ARSA'S AND OTHER PCA'S BE BETTER DEFINED ON CHARTS WITH DME ARC DISTANCES PLAINLY PRINTED AND PROPER FREQS PROPERLY AND BOLDLY DISPLAYED ON ALL CHARTS; VFR-IFR.; GOVT AND COMM; ETC.