[arm-allstar] Kenwood TH-D74 DTMF troubles

[wb9rsq at me.com]

I use a THD74 and all 16 tones decode perfectly and consistently.
In fact I use it as my primary back up control since my Icom radios don't
always work as well.
I have loaded several command sequences in to tone memory on the HT and they
fire and decode correctly.
The audio on the HT is certainly higher then that from the THF6A as far as
microphone audio but the tones sound about the same.
I'm not sure if the internal mic gain on the 74 would also change the tone
level, I didn't test.
However there are three levels for internal mic gain.
There are settings for duration and tone spacing for firing the command
sequences from memory.
However if manual entry is failing that's not going to matter.
Maybe narrow FM would decode better.
It does sound louder on some receivers so maybe your node would hear the
difference.
I swapped out a Motorola radio for a DR1x and noticed no difference in tone
decode performance.
My interface is a URI.



-----Original Message-----
From: arm-allstar <arm-allstar-bounces at hamvoip.org> On Behalf Of "Lloyd Duck
via arm-allstar"
Sent: Thursday, May 17, 2018 11:07 AM
To: 'ARM Allstar' <arm-allstar at hamvoip.org>
Cc: Lloyd Duck <lduck at me.com>; 'Doug Crompton' <wa3dsp at gmail.com>
Subject: Re: [arm-allstar] Kenwood TH-D74 DTMF troubles

Doug,

I've moved the RX levels all around to try and get it to decode. Best I get
is a decode of *, 4, 7 and 8 no other dtmf numbers or letters will decode
from the Kenwood TH-D74. 

I did check the level compared to the Icom ID51 and Yaesu FT2D and the
Kenwood is a little lower but not by much.

Fob's I'm using RB-USB RIM RIM-RC21-/RLC on the Arcom 210 controller on one
node and RIM-Maxtrac on a CDM-1250 for the other node I've tested.

I get the same results for the TH-D74 dtmf on both.

Mike,
I double checked the setting in the Kenwood and mine are matching yours. 

I'm just trying to send dtmf *82 to say the time. 

-----Original Message-----
From: arm-allstar <arm-allstar-bounces at hamvoip.org> On Behalf Of "Doug
Crompton via arm-allstar"
Sent: Thursday, May 17, 2018 10:24 AM
To: ARM Allstar <arm-allstar at hamvoip.org>
Cc: Doug Crompton <wa3dsp at gmail.com>
Subject: Re: [arm-allstar] Kenwood TH-D74 DTMF troubles

LLoyd,

   did you check levels on the D74 vs. the other radios? It is possible the
DTMF levels are significantly different. The pre/deemphasis setting is based
on your node radio's requirements. What is your node radio? FOB?


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*



On Thu, May 17, 2018 at 10:46 AM, "Lloyd Duck via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> Has anyone else had trouble decoding dtmf from the Kenwood TH-D74?
>
>
>
> I've tried it on two different nodes and neither one will decode very
well.
>
> Icom, Yaesu and Kenwood mobile and HT's work on both nodes, just not 
> the TH-D74.
>
>
>
> It will decode *, 8's just nothing else. I've even tried multiple 
> TH-D74's with the same outcome.
>
>
>
> I do have TX/RX EQ turned off on the TH-D74 and on both nodes I've 
> tried toggling the PRE and DE emphasis with no luck.
>
>
>
> Anybody have a suggestion?
>
>
>
> Lloyd Duck, W5LND
>
>
>
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>
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