Bear Tracker 885 internal scanner module

[cmaness2001]

The 885 is a combination scanner and CB radio. I cracked one open and the scanner section is a separate module with what appears to be a simple microprocessor interface. Does anyone have pinout and or protocol information such that I could build my own UI for it?

 

[Ubbe]

the scanner section is a separate module with what appears to be a simple microprocessor interface.

Can you take a picture of the inside of that box, so we can see if it looks anything like Unidens other scanners, using their standard remote control serial 4-pin interface, or if it just the radio module from something like a BCD436 having something like a 10 pin interface.

/Ubbe

 

[cmaness2001]

It's the module on the upper left.
There are 3 connectors going to it,
(1) 8 pin goes to the motherboard
(2) 8 pin goes to the SD card reader
(3) 2 pin goes to the motherboard

Pads marked MOSI and MISO would indicate that the communication is SPI. I'm going to throw my Flipper Zero on it and see what I can see.

 

[gary123]

Under the shield would be real nice. I suspect there is a BC125 or similar board in there.

 

[cmaness2001]

1 of 2 Interface board

 

[cmaness2001]

2 of 2 RF Board

 

[hiegtx]

Under the shield would be real nice. I suspect there is a BC125 or similar board in there.

This unit does digital trunking, which the 125 does not, More likely, the scanner section board might be a close copy of what the HP-2 uses.

 

[slowmover]

This contributor (@WSAC829) has played around with U885 a fair amount:

Not my favorite CB, but...

I recently picked up a NIB Bear Tracker 885 CB/Scanner combo for a steal (half off suggested retail price) off of marketplace. Yeah i know it doesn't have NRC, SSB or FM, but i don't care. I wanted it for the p25 scanner capability, weather alerts, and bear tracker. I look at the CB part of this...

forums.radioreference.com

.

 

[Ubbe]

To not make it overly complicated they need to use a SD card P25 receiver board so HP-2 seems to be the most logical one. A 885 doesn't cost much more than a HP-2, so removing touch display and circuits like USB interface will reduce cost and allows a CB transceiver to be added.

The circuit board have a RXD and TXD that might be used to interface with the CPU. I wouldn't expect the firmware to output any usable data for a GUI than what are already on the 885's display.

/Ubbe

 

[cmaness2001]

The circuit board have a RXD and TXD that might be used to interface with the CPU. I wouldn't expect the firmware to output any usable data for a GUI than what are already on the 885's display.

/Ubbe

At a minimum I was hoping to display more information, but...