[ICOM] DTMF problem with IC-2710H

[D C *Mac* Macdonald]

Hi, George. 
 
Can you find another Icom owner with a "touch-tone" mic? 
If so, try that mic on your rig. I'm pretty sure that the 
tones are generated INSIDE the microphone by a tone board. 
 
You may also have a lack of 8V DC at the mic chassis 
connector, mic plug, or inside your mic.
 
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* k2gkk at hotmail.com * 
* (Since 30 Nov 53) * 
* Oklahoma City, OK * 
* USAF, Ret (61-81) * 
* * * * * * * * * * * 
 
 
 
> Date: Sun, 26 Aug 2012 15:36:27 -0700
> From: n9ejs at yahoo.com
> To: icom at mailman.qth.net
> Subject: [ICOM] DTMF problem with IC-2710H
> 
> Thanks Mac - I tried just the plain PTT and numbers and nothing comes out on either 2 meters or 440MHz.  I've studied the owner's manual about manual DTMF and I can't find anything except setting up DTMF memories!  73 - George, N9EJS
>  
> = = = = = = = = = = = 
> 
> --- On Sun, 8/26/12, D C *Mac* Macdonald <k2gkk at hotmail.com> wrote:
> 
> 
> From: D C *Mac* Macdonald <k2gkk at hotmail.com>
> Subject: Re: [ICOM] DTMF problem with IC-2710H
> To: "Icom Forum" <icom at mailman.qth.net>
> Date: Sunday, August 26, 2012, 3:31 PM
> 
> 
> 
> I don't have my 2710 book with me and it's a LONG 
> time since I first set mine up, but as far as I know, 
> the DTMF tones are actually generated in the microphone. 
> You just use PTT and key the tones while the mic is 
> keyed. I don't think you use "FUNCTION" at all. 
> 
> With all the cellphones that abound, I don't know if 
> any of the autopatches in the Oklahoma City area 
> are even still operational! 
> 
> 
> * * * * * * * * * * * 
> * 73 - Mac, K2GKK/5 * 
> * * * * * * * * * * * 
> 
> 
> 
> > Date: Sun, 26 Aug 2012 12:41:54 -0700
> > From: n9ejs at yahoo.com
> > To: icom at mailman.qth.net
> > Subject: [ICOM] DTMF problem with IC-2710H
> > 
> > I acquired an older IC-2710H recently, and find that it doesn't seem to want to transmit DTMF tones on the 440MHz band.  It works o.k. on 2 meters and I can hear the tones going out.  But when I use the same procedure (Function, DTMF, press and hold PTT, then press numbers on the mic keyboard), nothing happens.  I wonder what's wrong??  73 - George, N9EJS