Thank you again for this.. If you look at the obsolete / last buy list of the Motorola range, you'll discover that all their 'low' frequency Rx have been can. here is an extract of what is not to be considered as existing part:
MC13055 IF, up to 1.0 MHz
MC13145 UHF Receiver. For ISM band
MC13146 Lo pwr transmitter. For ISM band
MC13155 FM IF Detector, up to 300 MHz
MC13156 FM IF system, for dig. & Analog
MC13158 FM IF subsystem for dect & dig. appl.
MC13176 UHF FM/AM Transmitter
MC3356 for digital data comm. equipment
Narrow band
MC13135 FM, dual conversion, Comm Rcvr.
MC13150 FM, coilless detector IF sub system
MC3371 Low Power, FM IF, parallel LC
MC3372 Low Power, FM IF, dual oper.
MC3374 Low volt., single conv. FM receiver