I don't think you can connect directly to the serial port for it acts as a RS232 port with serial data.
I think Echolink board read the DTMF data and converted to serial data to feed the computer. I really do not know how to connect the 8870 for Echolink use. 73, ron, n9ee/r >From: [EMAIL PROTECTED] >Date: 2008/03/25 Tue AM 07:18:30 CDT >To: [email protected] >Subject: Re: [Repeater-Builder] DTMF Decoder > >All we want to do is be able to do the node selection and >control that would normally be done in the software >portion of echolink. So from what you are saying here I >can use the CM8870 feed audio in take the 4 data lines and >the strobe and hook them up to a serial port and I should >be able to get it to send data to echolink. > >I will take a look at that. > >Thanks, >Vern > >On Tue, 25 Mar 2008 07:11:26 -0500 (CDT) > Ron Wright <[EMAIL PROTECTED]> wrote: >> 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. >> >> > > > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
