[NHRC-user] NHRC 10

[Jeff Otterson]

Hi,

   You can change R53 to 510 K to increase the decode time delay.  This 
should help with the falsing.  Also make sure that the audio is not too hot 
going into the decoder.

   You could replace R28 with a 220K resistor to increase the output level 
of the controller...

   Your best bet would be to wait for Pete to get back from vacation and 
ask him about this before doing it.  He may have a better suggestion.

   Regards,

   Jeff




At 05:22 PM 7/7/2003, you wrote:
>1)    I have a problem with false triggering of the DTMF circuit from 
>female voices and a male voice.  I once spoke directly to Pete about this 
>but I lost the post-it.   Iwas told to change a resistor from 470k to 
>510k.  I don't remember which one.
>
>2)    The audio output to the transmitter is a tad low.  What should I do, 
>short of running the audio through the mic input, to increase the audio 
>amplitude at this stage?
>
>Thank you
>--
>73 de.
>Jeff H. Regan
>       - -NJ5R- -
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