General Information

All these radios are from the same line. Some are export versions, others are domestic. As far as we know, there appears to be a few different versions of RSS to program them. Apparently there is different software for the Latin American product, the North American Product, and the European.

We know for sure that the HT750/1250/1550 and CDM1250/1550 use RSS part number HVN9025.

The GP320/340/360/380 use their own RSS.

There are MPT versions of the GP340 and GP380, called the GP640 and GP680 respectively. There is also a MPT version of the HT1550 called the GP1280.

A programming tip for the Professional Series:

"Reading the radios worked fine, but when writing to them, the radio would lock up after programming. After spending a lot of time with Motorola System Support, it was found that Pin 12 (BOOT CONTROL) on the radio end of the RKN-4074 RIB cable should be disabled (unsoldered or removed) when using a SmartRIB. Once this pin was unsoldered, everything works as it is supposed to."

Portables

The GP340 is the European version of HT750 with SELECT-5 and 16 channels. GP320 is a 1 channel version of the GP340 without any channel knob. Also availble are the GP360 and GP380. The GP380 is a display version with 255 channels and keypad. The GP360 is same as the GP380 but without keypad.

The programming cable pinout is here.

The pin layout of the accessory connector is the opposite of this mating connector.

Mobiles

We have been told that the CDM1250 and CDM1550 use the same programming cable as the Maxtrac/Radius. We have also been told that the proper cable for programming these radios is part number AARKN4083A, which has 10 contacts instead of the RJ45's 8. If there is any electrical difference between these cables, please email us.

They also use the same RSS as the portables (HT750/1250/1550), as long as it is version R.03.00.01 or newer (HVN9025D).

You cannot clone the portable freq and stuff in to the mobile. It must all be typed in manually the first time.

Out Of Band

Depending on which version of RSS you have, this may or may not work for you.

Check and see if you have a GP300.EXE file, all bandsplits are in the GP300.EXE file if you do.

You need to open the GP300.EXE file in your Hex Editor and do a hex search for the lower or upper band limit you want to change.

All the band limits are in INTEL UNSIGNED LONG format and in Hz (eg. 403 MHz is 403000000 wich equals to C04A0518h). So, if you are searching for the 403 MHz band limit, you would do a hex search for C04A0518 and change what it finds to the limit you want.

No CRC check is done by the RSS, so you don't have to worry about correcting for one.

With version 5 of the HVN9025 RSS, we've been told that at least the VHF portion will allow programming between 137-173 MHz, we don't know about any of the other bands.

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