This cable pinout is for the 800 trunked Smartnet Mostar, or ATM Mostar that has an STX controller. That cable uses a standard RIB and uses standalone Smartnet field programmer software (RSS).
The Smartnet Mostar's are easily recognizable by the STX controller contained inside the unit. You can't miss it. Also, it should program with STX RSS.
For conventional VHF/UHF Mostars, a MIB (Mostar Interface Box), not a RIB, and its own software (Ver:AA.00.00.00) will program all vintages of radios, including NVR (all non-display) and Display (also includes some late model non-display).
The R1801 only worked on early vintage radios (don't know how to tell the cutoff).
As for the Epson... it is an HX-20 with a Motorola expansion unit.
It turns out the Epson ROM cartridge installed in the tape location on the HX-20 is an application to program the Syntor X radio (part number on the label on the ROM cartridge is YLN4288B).
There are separate program tapes are available for the HX-20 for both the NVR Mostar and the EEPROM Mostar. This person also stated these tapes may still be available from Motorola.
If anyone has information on the part numbers of any of these items (especially the tapes), please let us know.
Also, conventional Mostars won't take splinter channels and the MIB and RSS are NLA from Motorola. We have had reports that the MIB never worked well and most people with them gave up and used other equipment to do the programming.
With all this bad news, there is some good news...
The conventional Mostar has one EPROM/EEPROM. 2704, 2716, 2732, 2816 etc. 8k or 32k can be used, and expansion from 4 ch to 16 ch is possible with the right jumper changes, see manual.
The EPROM IC is socketed and can be removed after removing all the T-10 screws holding down the circuit board that has the original programming edge connector.
Using a conventional EPROM/EEPROM programmer, you can program up a new PROM for your radio using the following Excel spreadsheet.
The pinout of the 6 position microphone connector is as follows:
Pin 1 = RX Monitor switch (SPST to ground) (blu) Pin 2 = RX Audio (for handset/speaker mike?) (yel) Pin 3 = MIC P.T.T. (high side) (grn) Pin 4 = MIC Audio (hot side) (red) Pin 5 = MIC Audio (low side; to ground) (blk) Pin 6 = MIC P.T.T. (low-side; to ground) (wht)
