The RC-1000 uses a CM8880 which is a DTMF decoder/encoder. It requires a CPU type interface to allow reading and writing and must be set up for the proper mode. It is not difficult, but much more than what you need.
The CM8870 is decoder only, easy to use and straight forward...4 data lines and strobe going high to indicate decode present. Not sure what you are wanting to do with the DTMF. For echolink there is interface to allow for node selection and some control. The Echolink board uses the 8870, but been a while since I looked at it. It does use the RS232 port for comm. 73, ron, n9ee/r >From: [EMAIL PROTECTED] >Date: 2008/03/24 Mon PM 04:26:07 CDT >To: [email protected] >Subject: Re: [Repeater-Builder] DTMF Decoder > >Wouldn't I need some software to interface this with >Echolink? Getting the data from the 4 lines to serial or >parallel shouldn't be a big deal but reading it from the > port and translating that to Echolink might be. > >What about being able to pick the DTMF up off of my RC1000 >and getting that data into the PC is that possible? > >Vern > >On Mon, 24 Mar 2008 12:10:44 -0700 > Ken Arck <[EMAIL PROTECTED]> wrote: >> At 11:55 AM 3/24/2008, [EMAIL PROTECTED] wrote: >> >>>Any one know if there is a good hardware DTMF decoder out >>>there or plans for one that will work with Echolink? >>> >>>There are several of us who had working Echolink internal >>>DTMF that no longer can get them to tune up right. We are >>>tired of messing with it so we want to go external. >>> >>>All I have found on the internet are full echolink >>>controllers with DTMF built in. I want just the DTMF >>>decoder part. >> >> >> >> >> http://products.zarlink.com/product_profiles/MT8870D.htm >> >> Ken >> ---------------------------------------------------------- >> President and CTO - Arcom Communications >> Makers of repeater controllers and accessories. >> http://www.arcomcontrollers.com/ >> Authorized Dealers for Kenwood and Telewave and >> we offer complete repeater packages! >> AH6LE/R - IRLP Node 3000 >> http://www.irlp.net >> "We don't just make 'em. We use 'em!" >> > > > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
