XTL Radio

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Page covering the XTL 1500/2500/5000 Radios

These are P25 trunking radios which are mono-band.

Accessory Connector

J2 is the accessory connector

Here's a picture of it from the radio side

XTL Accessory Jack Picture Radio Side, aka J2

Table of Pins

Rear Accessory Jack Pin Functions
Pin Name Function
1 GRND Ground
2 BUS+ SB9600 BUS+ Data
3 BUS1 SB9600 BUS- Data
4 TXD RS232 Transmit Data
5 RXD RS232 Recieve Data
6 USB- USB - (White)
7 USB+ USB + (Green)
8 RESET SB9600 Reset
10 CTS RS232 Clear to Send
11 RTS RS232 Request to Send
12 USB PWR USB Power +5v
13 CHAN ACT Chanel Activity (COR+PL
14 GRND Ground
15 EMERGENCY Emergency
16 PTT Push to Talk
17 ONE WIRE One-Wire Data
18 VIP OUT 1 Vehicular Interface Output 1
19 VIP OUT 2 Vehicular Interface Output 2
20 SPKR+ Speaker+
21 RX FILT AUDIO Receive Filtered Audio Out
22 Monitor Monitor Overrides PL
23 AUX MIC Rear Mic Input
24 SW B+ Switched Battery Voltage
25 IGN Ignition Sense
26 SPKR Speaker -

Sourcing of connector

As of now, there is no other source for the connector than Motorola. The rumor mill puts money on ITT Canon being the manufacturer.

The pins come in a 25 pin strip Motorola Part Number: 3980034F05

The housings are HLN6961

The body looks like 2 D-Sub connectors stacked with standard pitch spacing on the pins.

Aftermarket Pins will not work due to the low profile retaining ring. This thread on the Batlabs Batboard has some more info and this picture showing the differences below:

XTS accessory Pin detail vs. normal pins

Notes on assembly

The TE 91285-1 Pin extraction tool is highly recommended. DigiKey Link

The Engineer PA-09 is recommenced as a crimper.

Photos of connector

I disassembled and took some close up pictures with my scope. The connector looks a bit similar to most D-SUB connectors.

Operational notes

The 900 MHz radio has an option for the pre-amp, you want this enabled.

The other concern for 900 MHz was the preselector B7250, and it's the same device from the MCS2000. Motorola describes it as a 6 MHz wide unit centered on 938 MHz, and then another follow the pre-amp for an image filter. In testing with a tracking generator it was found roll-off didn't happen until about 915 MHz and 960 MHz. This should be (and is) a fine ham band receiver.

The programing info for modifying CPS to program the hamband is on the XTS 2500 page.

Pictures of Radios

Brick and TIB


Control Head Interface

XTL 2500 900 MHz Internal PCB

Control head interface

O series Transceiver Interface Board (TIB)

Mid Power Flex detail


File:XTL1500 Install Manual.pdf

File:XTL2500 Detailed Service Manual.pdf

File:XTL5000 Basic Service Manual.pdf