The Epson HX-20 is an old computer programmer for some early vintage Motorola radios.
There were specific cassette tapes which held the programming software for the type of radio you were programming. There were also adapters which had ROM in them that went into the cassette player for programming PROMS for some radios.
The part numbers for the different pieces we are aware of are detailed below. Note that finding one of these programmers and tapes is VERY rare and the information below is provided more for reference purposes. The parts are long since discontinued by Motorola.
Programming the Mostar requires an Epson HX-20 and a Motorola expansion unit.
The part numbers for the tapes are as follows:
There are two tapes available for programming the Mostar, one for radios without a display, and another for radios with a display.
Mostar Tape - EEPROM 0180357A51 Mostar Tape - Display/EEPROM 0180366B06 Cable Display Mostar to Epson 0180354A01 Cable Non-Display Mostar to Epson 0180357A52
The manuals for these options are:
PROGRAMING THE MOSTAR NVR 6880100W88-O PROGRAMING THE MOSTAR W/DISPLAY 6880101W14-A EEPROM 6806088T60-O
Syntor X Parts
To program these radios, a Motorola ROM cartridge is installed in the tape location on the HX-20 and it contains an application to program EPROMS for the radio. The part number on the label on the ROM cartridge is YLN4288B.
Syntor X9000 Parts
The part numbers of the tapes and associated parts are:
SYS9000C - OPTIONS 0180357A50 Tape 1/3 SYS9000C - 64 MODE 0180357A50 Tape 2/3 SYS9000C - 32 MODE 0180357A50 Tape 3/3 SYS9000TCONHD 0180357A53 Tape 1/2 SYS9000TDUP 0180357A53 Tape 2/2 Cable SYS9000 RIB TO EPSON 0180357A45 Cable RIB TO CONTROL HEAD 0180353A75
The part numbers for the manuals covering the programming with the Epson are:
SYSTEM 9000 CONVENTIONAL OPTIONS PROGRAMMER OPERATOR'S MANUAL 6880309B07-O SYSTEM 9000 CONVENTIONAL 64 MODE RADIO AND CONTROL HEAD PROGRAMMER OPERATOR'S MANUAL 6880309B06-O SYSTEM 9000 TRUNKED CONTROL HEAD PROGRAMMER OPERTAOR'S MANUAL 6880309B08-O SYSTEM 9000T CONTROL HEAD DUPLICATOR OPERATOR'S MANUAL 6880310B13-O