-----Original Message----- From: "n2len" <[EMAIL PROTECTED]> Subj: [Repeater-Builder] Remote base radio help... Date: Tue Feb 7, 2006 2:03 pm Size: 1K To: [email protected] Hello, I am presently hooking ua remote base radio to my vxr5000. The 5000 COS needs a contact closure to make function. I am using a ICOM 207 via 6 pin mini din for signaling. I have used a 2N2222 transistor set up as a open collector output circuit to trigger the COS on the 5000 repeater. Diagram: Base---ICOM207 Squelch Output to 4.7K resistor to base leg of transistor Collector----Feeds COS pin on VERTEX VXR5000 Emitter----GND Now the link radio only works one way when I switch it on. When the 5000 transmits the link radio keys up and sends audio to the other machine. But when the other machine keys up nothing back. The link radio receives the signal but it dosent throw the 5000 into transmit. So I am thinking I have a COS problem with the transistor circuit I built. So my question is. Do I need this transistor circuit to activate COS on the repeater or can I just wire the Squelch output of the 207 directly to the COS pin on the VXR5000. Is the ICOM207 logic level at the mini din. I know that this is specific information to my situation, but I figured to ask anyway. Thanks.... *** From Kb2jpd: Well, you really need to see what the VXR is expecting to see as a COS: open collector , voltage level or actually a logic level. Second, that transistor will work as a switch but you should see first if it is working like that or if you have to add a biasing circuit. Dang, this is worse than modding Motorola Micors without documentation. Adam Kb2jpd Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
