You may find http://alaskareflector.org/zl1nc/UV-COS.html to be helpful in achieving a COS from the Baeofeng. The UV-5R circuit diagram is available at http://www.miklor.com/uv5r/. I’m working on combining the COS at the mic jack pin 4 for the same purpose, which will require some modification to be compatible with the bias on pin 3 of the 3.5 mm jack. PTT can be asserted on pin 5 are a shorting relay between this pin and pin 5 of the speaker 2.5 mm jack. Tx pin 1 and Rx on the 2.5mm speaker output.

Bob

KK6ECM

From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] On Behalf Of Adam Booth
Sent: Thursday, December 26, 2013 5:25 PM
To: app_rpt-users@ohnosec.org
Subject: [App_rpt-users] DMK URI and Baofeng Radios

Hello,

I am looking to set up my first Allstar node and I’m going to use either a Baofeng UV-5R or UV-82 HT for the radio. I plan to interface this to the node with a DMK Engineering URI (http://dmkeng.com/URI_Order_Page.htm) I have yet to order. Does anyone here have experience with interfacing Baofeng HTs to the DMK URI and have any tips on how to secure the connection and anything else I should know? I am also interested in Echolink so a product that would be compatible with Echolink would be my best choice.

Any other suggestions for radio interfaces would be welcome as well. I have looked into Advanced Repeater Systems’ products as well (http://arsrepeaters.com/USB_AllStar_Adapters.php) and they look excellent, however, I would prefer the versatility of something like the URI for when I upgrade the radio on the node. It looks like the ARS product only interfaces to a certain radio but the URI will interface to anything (give you know the pinouts on your radio, etc).

So all in all, I am getting started and have yet to choose an interface. I have the Baofeng radio chosen as my starter radio, everything else is open to suggestions!

Thanks

Adam

KL3TX