index

Motorola POCSAG Pager

RF boards

Pager receiver/decoder boards: NRE6552B, NR?6513A, NRE6423A, AARD4052C, NE___54A.

UHF and VHF receiver boards.

Here is the compiled list of known part numbers. Some of it can be decoded using aaannnn and suffix tables:

  1. AA or N means country of origin, could be "Made in the USA" and "Portable product (i.e. Florida manufacturing plants)"
  2. R "Receivers and receiver related"
  3. D/E/F stands for 144-174 MHz or 406-470 MHz or 900MHz band
Model           Band        X   2nd osc     1st (Xtal)
AARD4050        138-143 A   x2
 NRD7211A,B     same
AARD4051        143-148.6 B x2 
AARD4051A       143-148.9 B x2  17.445          62.55-65.35     KXN6300AA
 NRD7212A,B     same
AARD4052        148.6-152 C x3
 NRD7213A,B     same
 NRD7717A       LS750 RCVR VHF POCSAG SP-C
AARD4053        152-159 D   x3 G: ALT BRAVO II REC NAFTA
 NRD7214A,B     same
AARD4054        159-164 E
 NRD7215A,B     same
AARD4055        164-169 F   
 NRD7216A,B     same
AARD4056B-D     169-172
AARD4056A       169-174 G
 NRD7217A,B     same
 NRD7727A0      153-164 LS750 VHF POC RCVR
 NRE6421A,B     406-420     x8
 NRE6550B       406-423     x6 (servicing pagers) Bravo Express
 NRE6512        KEYNOTE UHF RECVR B SPLIT
 NRE6551B       435-450     x8      44.545      48.75-50.625    
 NRE6513        KEYNOTE UHF RECVR C SPLIT
 NRE6552B       450-465 UHF BRAVO II Bravo Express
 NRE6423A,B     same
AARE4001A-0,1   same
 NRE6553B       465-480
 NRE6424A,B     same
AARE4002A-0,1   same
 NRE6555B       495-512
 NRE6426A,B     same
 NRF4071E       928-932     x12     44.545          73.67-73.92 NXN3000A (Y551)
 NRE6602A1      450-457 UHF SERVICE RCVR
 NRE6602A3      464-471
 NRE6611A3      448-469 LS750 UHF POC RCVR

For re-crystalling, VHF manual calls for a KXN6300AA (167651, 167652), and UHF manual calls for a KXN6301AA Ther also KXN6236AA (167647, 167648) in ICM catalogue. It's AT cut, third overtone, are used in a series resonant circuit, have about 5 picofarads (pf) of capacitance, and have about 25 ohms of resistance. Case: UM-1/4/5.

DAPNet

VHF: TBC, as not available in the UK

UHF: 49.3734375MHz, calculated as (439.9875 - 45)/8, within 455kHz/2 PN KXN6236AA (167648).

Sources: