Sorry John, most programmable radios NOW generate DTMF with the same processor that runs the radio. Most don't use discrete DTMF encoder chips anymore. 73 AC0Y
--- In [email protected], "John J. Riddell" <[EMAIL PROTECTED]> wrote: > Most DTMF pads have a chip that will do 4 rows and 4 columns.....16 > digits.... > What you need to do is mount a small switch on the case to select row 3 or > row 4. > from the chip output. > When row 4 is selected, you use the row 3 keys. > > > > John VE3AMZ > > > ----- Original Message ----- > From: "Dave Gingrich" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Thursday, December 30, 2004 11:18 AM > Subject: Re: [Repeater-Builder] Re: Repeater Controllers > > > | > | > | > | On Dec 29, 2004, at 20:33, Q wrote: > | > | > > | > Mine uses all 16 digits,and I told it to do so....who still messes with > | > 12 digit pads??? This is the 21st century after all.... > | > | Actually many of us do, nearly everyone using commercial gear. I just > | purchased a brand new model Kenwood TK-3180 (first sold new in > | August-04, definitely making it a 21st century radio). VERY nice > | radio, but only has a 12-button pad, as do most commercial rigs. At > | least on the 3180 you *can* twisty-knob your way to the optional four > | keys, but not very conveniently. How many buttons are on an HT1250 or > | 1550? ...and how many Amateur rigs are made that cover 900 MHz? > | > | If you can't do it in twelve keys... it's not worth doing, IMO. > | > | -K9DC > | > | > | > | > | > | > | > | > | > | Yahoo! Groups Links > | > | > | > | > | > | > | 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/
