Ok, let me make it a little more clear for anybody that might not have understood the first message. (No offense intended Eric)
A Kenwood TKR-820 repeater has CTCSS and DCS encoding and decoding built into it with an on-board controller. The configuration is stored in a EEPROM chip, 93C46 (or 93LC46). What I'm trying to do is figure out how to change the configuration without using the expensive Kenwood programmers, unfortunately this one isn't just a simple cable. I have a serial EEPROM reader/writer, so I used instructions found in the repeater-builder archives at http://www.mail-archive.com/repeater-builder@yahoogroups.com/msg63481.html to modify the configuration for the ctcss tones. Unfortunately, the person who wrote that article didn't figure out the DCS configuration. So I'm hoping that someone who has a TKR-820 already configured for DCS has the ability to read the EEPROM chip as well and send me a copy. I hope that clears it up a little more. Jeff, KB1SPH / WQEX694 -------------------------------------------------- From: "Eric Lemmon" <wb6...@verizon.net> Sent: Thursday, July 15, 2010 10:24 PM To: <Repeater-Builder@yahoogroups.com> Subject: RE: [Repeater-Builder] TKR-820 CTCSS/DCS EEPROM > Jeff, > > I suspect you may be headed for disappointment. CTCSS (PL) and CDCSS > (DPL) > are handled differently within the radio. While the former is audio, > albeit > sub-audible, the latter requires a DC connection to the modulator in order > to create the DCS signal at a 134.4 Hz rate. In other words the CTCSS > hardware will not work for CDCSS. Perhaps some readers who have TKR-820 > stations with CDCSS capability can advise you about the modifications > and/or > optional modules that are necessary to handle DCS. > > 73, Eric Lemmon WB6FLY > > > -----Original Message----- > From: Repeater-Builder@yahoogroups.com > [mailto:repeater-buil...@yahoogroups.com] On Behalf Of kb1...@wqex694.info > Sent: Thursday, July 15, 2010 7:03 PM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] TKR-820 CTCSS/DCS EEPROM > > > > > Ok, I'm playing around with my Kenwood TKR-820 a bit. I've found the > instructions for HEX editing the channel and ctcss information after > reading it from the EEPROM, and they work great. But there's nothing > about DCS. I'm wiing to try and decipher how to get the DCS, but I > need a look at the information from a chip that contains DCS > information. Since I don't have a real programmer I can't change mine > and then look at it. So if anyone has a TKR-820 with DCS in it and a > EEPROM reader, it would be greatly appreciated if you are wiling to read > the chip with PonyProg2000 (http://www.lancos.com/ppwin95.html) and send > me a copy. > > Thanks, > Jeff, KB1SPH / WQEX694 > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > >
