[arm-allstar] Alinco URI interfacing

[Doug Crompton]

Just to expand on the previous message to Greg here are the pinouts for a simpleusb connection from the DMK URI to the Alinco 144/222/440 series radios with data connectors.

         Alinco DB9 Male          DMK URI DB25 Male

COS              1                            8
RX Audio       4                           21
Ground         5                           20  (or any ground point)
PTT              7                            1
TX Audio       9                           22

This should be a shielded cable.

The Alinco COS follows PL. You still need squelch. Experiment with setting it above the default level of 2. A value of 4-7 or possibly more does not significantly lower the sensitivity but greatly reduces the tail.

The BBB   simpleusb.conf  file on the image is setup correctly for the Alinco series of radios. Pin 8 of the URI corresponds to the carrierfrom=usbinvert    parameter.  The ctcssfrom should be set to no and invertptt=0.

With rxboost=1 the typical rx level is 750 and tx level is 500 set by simpleusb-tune-menu

If never hurts to put ferrites on both the audio and usb cables. It has solved HF interference problems for me.
 
73 Doug
WA3DSP
http://www.crompton.com/hamradio
 		 	   		  
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