Many groups use DTMF decoders,already in common use. Its easy for any
ham rig or repeater controller to encode. LiTZ (long tone zero) is
already accepted as the universal call for help,I use it when sending
weather alerts. Most modern ham rigs have DTMF decode capability,even
my old Rad Shack 202 ! Why re-invent the wheel?      Seasons Greetings
and 73,Lee,N3APP

----- Original Message ----- 
From: <[EMAIL PROTECTED]>
To: <Repeater-Builder@yahoogroups.com>
Sent: Wednesday, December 24, 2003 1:26 PM
Subject: [Repeater-Builder] 5 tone


> Anyone out there using or familiar with 5 tone selective calling?
(Selcall)
> Would think it would be useful for paging or callouts for Skywarn &
Red Cross.
>
> Art - KC7GF





 

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