Anritsu PDC Signalling Tester Model MD1623B
Specifically designed for testing of both tx and rx relating to the now obsolete Japanese cellphone system, PDC. Similar (in some ways) to GSM in that it used TDMA, operating in the 800Mhz & 1.8Ghz frequency bands (2G)
**MODULE ONLY**
PDC is old cellular technology although still in use until 2012, at which time the last Japanese provider turned off their equipment.
OR
Cannibalise for parts! (see description below for parts of "note")
MODULE: IF 1
Part number: A8 IF1 322U12354 (Y1)
Slot position directly into the motherboard
COSMETIC CONDITION:
Clean with no damage at all
TECHNICAL DETAILS:
Multilayer PCB
Open Frame with three openable diecast shields top/bottom
Some discrete components but primarily SMD
Removeable devices: None
Board mounted devices: LF398, MAX903, various HC Logic, JRC A5012, ADC 0831,
There are 3x sub-sections, each within a diecast shielding. Removing the shield is easy with 4x bolts from the top going into a tapped hole in the underside shield
Sub-section 1 (129.55Mhz): NPC PLL2001 (Serial input PLL to 200Mhz input), 2x JRC 5534 Op amps
Sub-section 2: NEC 2x C1656 (800Mhz wideband MMIC Amp), 130000 Crystal Filter? (10 pins M C), TDC 97.2 TMA30H metal can 8 pin device (function unknown)
Sub-section 3: 2x JRC 7006 (super low current Op amp (3uA), 2x blue 3 pin devices (designated Z) 50 CA & 50 CB (function unknown)
TESTING:
Fully functioning prior to removal from the MD1623B in 2020, equipment now obsolete.
Removed, stored/supplied in ESD safety packaging
