Since the OP is new, there is a substantial lag time in his posts appearing... So I did not see his post before I posted mine, even though it now shows up above.
Theo, I primarily use FCC data, my website (
Digital Frequency Quick Import), and RR (mainly for trunked system TGID labels if desired). I also utilize searches on my scanner and on software defined radio. The RR DB is great for getting started on the fly, but, if you want to be fully unlocked to everything around you, it's crucial to "search." Also, the FCC database has a more complete listing.