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Custom Cabling

When attaching 2 radios to the UDRC™ II it requires two separate custom cables.  In this configuration we are always taking audio from Pin 1 of the mini DIN-6 cable.  There is some debate on setting the radios in 1200 vs. 9600 baud for transmit using Pin 4 when operating at AFSK 1200, choose what works best in your environment.
See a discussion about pre-emphasis

Cable 1 

The first is a modified Mini DIN-6 M/M cable with only pins 1-4 connected. It's important to have pin 5 disconnected or removed if you have something connected to the HD-15 connector.

    Radio
DIN-6 Pin
 Function  Function UDRC
Din-6
    1 LOL (to TX) Data In  1
    2 GND GND  2
Port 1   3 PTT PTT  3
    4 IN1_L (9600 from Disc) Data Out  4
    5 1200 N/C N/C
    6 SQL N/C N/C
PTT GPIO 23          

Cable 2

The second cable will terminate between the mini DIN-6 and the HD-15 connector.

    Radio
DIN-6 Pin
 Function  Function  UDRC
HD-15 Pin
    1 LOR (to TX) Data In  7
    2 GND GND  10 or 5
Port 0   3 PTT PTT  2
    4 IN1_R (9600 from Disc)  Data Out  9
    5 1200 N/C N/C
    6 SQL N/C N/C
PTT GPIO 12  

 

 

   

Custom made cables from W7TUT

Model C201 (mDIN6 to mDIN6) - Port 1

Model C202 (mDIN6 to HD15) - Port 0

[W7TUT is not currently making cables]

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