GE Monogram Radios were made by Maxon. When they originally came out, we use to joke that GE's bottom of the line radio, was Maxon's top of the line model. 

This web page will attempt to provide some information about the radios and programming equipment required. If you have any additions or corrections, please contact getech@hallelectronics.com. 

Here are a few pages already on this site that detail the model numbers, and GE publication numbers.

Maintenance manual publication numbers
Model Number Information MG series
Model Number Information MH series
Accessory Model Numbers

the following are short cuts to bookmarks on this page.

Conventional
    Portable
    Mobile
LTR
EDACS
    Portable
    Mobile

Conventional

Programming Hardware

PC Based

The Monogram programming setup consists of a Programming cable that plugs directly into the parallel port of a computer. The standard GE RIB TQ3370 is NOT used with the conventional Maxon/Monogram products. The TQ3376 is a dual headed cable. One connector is used with the portable and plugs into the small round mic connector. The connector is made by Hirose, and can be purchased at Digi-Key. The other connector is a six? pin Molex connector that plugs into the Mobile radio. This does not plug into the microphone connector, on the front. The connector is located inside the radio, and is accessed by removing the bottom? cover.

The Maxon version of the PC based programming setup, consists of SMP4000? interface cable for the portable, and SMP4000? for the mobile. Both of these cables have the level shifting circuitry inside the DB25 connector hood. The Maxon cables plug into a serial port of a computer.

Prom Burner

There is a third method of programming this radio. Maxon also had a hardware based "standalone" programmer. The SMP4000 can program several models of conventional radios. GE called it MHTS3R. Vx.x is the latest version of software I have heard of. No info on upgrading that prom. This will also program these other Maxon Radios.? SP2000, SM4000, SP5050. Accessory cables used with this are as follows....?

Programming Software

The GE software is TQ3375 and is not compatible with the Maxon cables. The Maxon software is SMP???? and is not compatible with the GE cable. There seems to be no difference between the GE version of the radio, and the Maxon version, other than cosmetics. The radios may be a different color, or the speaker grille has a different texture, but both "brands" of radio seem to program fine with either setup. 

Conventional Portables

SP2000	SL70W	SP5050 Monogram MH series Programmable Low-Band Portable

Conventional Mobile

SM4000

LTR Portable

TP4800

RPM1132471/01 programming cable
AE/LZY213722 programming software

EDACS

Programming Hardware

EMP EDACS Monogram Portable, and the EMM EDACS Monogram Mobile, are programmed using the TQ3370 RIB. The EMP programming cable is RPM1132473/1  and the Mobile cable is RPM1132510/1.

XPE and XME programming cables connect directly to the Com Port. The RPM1132848/11 cable is used with the XPE portable. This same cable, with the adapter RPM1132848/12, connects to the XME mobile

Programming Software

The EDACS version of the ProGrammer software (TQ3385 / AE/LZY213766) is used with all of the EDACS Monogram products.

The EMP and EMM radios are dual mode, and can also work with GMARC VE trunking systems. Programming software for this mode is DOS only and is part number TQ3346. 

EDACS Portable

XPE The XPE portables look similar to the Maxon SL500/SL600 portables. The XPE was available in 148-174 Mhz, 400-512 MHz and 800 MHz bands.	EMP EP4800 This radio is an 800 MHz trunked portable. It is a dual format radio, and can be used with EDACS or GEMARC VE trunking. It looks the same as the 800 LTR portable discussed above.

EDACS Mobile

EMM EM4800?	XME

Misc. Graphics relating to Maxon and Monogram radios. Found in manuals or somewhere on the web.

Maxon Programming notes by G4ILN

1    Mic
2    VCC
3    Spkr
4    Spk/Sw
5    PTT
6   Program

Information wanted:

Hirose part number (or Digi-Key) for the speaker microphone connector used on these portable radios.
Molex part number for the connector used to connect to the mobile radio.
Maxon Part Numbers and Schematics for programming equipment.
Schematic for EMM programming cable RPM1132510/1
Schematic for XME adapter RPM1132848/12
Confirm part number for DOS GEMARC programming software. TQ3346?
Picture of the XME Mobile Radio