Receive 800 MHz analog (AMPS) cellular phones on your unmodifiable scanner.
The prototype for this worked like crap. It needs more LO gain and maybe an active mixer instead of a lossy passive diode mixer. The schematics are for reference only right now.
Schematic
- Scanner Adapter for Intercepting Cellular Phones (38k PostScript)
- Scanner Adapter for Intercepting Cellular Phones (91k PNG)
Datasheets
- Maxim MAX2608 VCO (315k PDF)
- Maxim MAX2608 VCO Evaluation Kit (164k PDF)
- Motorola MC145151 PLL Frequency Synthesizer
- National LM78L05 Voltage Regulator
- NEC UPB1506/07GV Prescaler Fijitsu MB506 equiv.
Notes
Scanner Converter - Radio Electronics, February 1992