I have a ULI box that interface the computer to the radio. If you like I will let it go for $65. It was bought brand new, use it with echolink for a short while and pack it back in the box. If you like you can contact me off list by e-mail at my [EMAIL PROTECTED]
Will / W4WWM On Sun, 2007-08-19 at 15:07 -0500, Ron Wright wrote: > Eric, > > At www.echolink.com, the echolink folks, sell an interface board for > it. It is a small ~3x3 board with serial port to the computer and I/O > for the repeater. They provide tx an rx audio and ptt. Think also COS. > Been about 5 years since I played with ours. It is still running 24/7. > > The control board has a DTMF decoder and allows one thru the repeater > access nodes, turn on/off connections, enable/disable the echolink, > etc. > > I think it cost about $50. We use one here and it simplified things > greatly. The only problem was the audio...the computers often are not > at ground and hum can be a problem. > > 73, ron, n9ee/r > > >From: kk2ed <[EMAIL PROTECTED]> > >Date: 2007/08/19 Sun PM 12:15:23 CDT > >To: [email protected] > >Subject: [Repeater-Builder] Simple COR & PTT to Echolink serial port > interface > > > > >Good Afternoon, > > > >Has anyone come up with a simple circuit to tie a repeater > >controller's port to a PC's serial port for Echolink? > > > >I have customized a few Rigblaster type units in the past to add COS > >funtionality, but the more I have looked at them, the more I think > >they are a waste of money. > > > >A simple circuit consisting of a few parts should be enough to adapt > >RTS or DTR for a COS signal to the controller, and the controller's > >PTT to the PC's DSR or DCD input. Most of the commercial interface > >boxes don't really offer any advantage to the audio paths, so > hooking > >the sound card directly to the controller's audio in/out paths > >shouldn't be a problem. > > > >In the past I've simply tied a radio's COS to the PC's DCD input via > >an isolation diode and current-limiting resistor with great success, > >and used the DTR to trigger an NPN transistor across the radio's > PTT, > >but obviously things are reversed on a controller. I was figuring I > >could use RTS as the controller's COS signal, and set the active > >hi/lo on the controller accordingly. For the PTT signal, I might > need > >to invert the PTT output of the controller to control DSC or DCD in > >the right active direction. > > > >Anyone have any suggestions or documented circuits before I embark > on > >this project? > > > >Eric > >KE2D > > > > > > Ron Wright, N9EE > 727-376-6575 > MICRO COMPUTER CONCEPTS > Owner 146.64 repeater Tampa Bay, FL > No tone, all are welcome. > > > > >
