The FCC & Cityfreq. databases show the following:
Flatlands VAC
4632 Avenue N
Brooklyn
KAQ513
155.28 MHz
155.715 MHz
WPYX242
462.475 MHz
467.425 MHz
Broad Channel FD
15 Noel Rd.
Queens
KJN880
46.46 MHz (This frequency is also Suffolk County Fire Controls primary countywide dispatch channel)
155.28 MHz
Nothing comes up on any of the databases for 154.34 MHz in Queens or Brooklyn. Check N2NOVs website, (He is a RR member) under NYC volunteer ambulance & fire department frequencies, it's an extensive listing for everything in the greater NY area. I wish I could have been of further assistance to you. Maybe someone local to you will respond to your thread with possible frequency updates that possibly may not have reached the databases yet.
Federal Communications Commission (FCC) Home Page
Scanner Frequencies
www.n2nov.net
FLRAILMAN