I seem to recall that the trick to doing this (other than diode steering the
PTT's and isolating the audio) was to steer the PTT signal from each TNC to
the other's RF-DCD port through a diode. That way, each TNC would know when
the other had the PTT in use. This was most commonly used to mux 1200 and
2400 baud users on a single channel. Of course, your TNC would have to have
the RF-DCD port (the fifth pin on a TNC2 clone) available, not all
do..~Steve>

 

Steve McCarter, KB4OID

Email: [EMAIL PROTECTED] 

Website: http://www.kb4oid.org <http://www.kb4oid.org/>  

Fort Walton Beach, FL, 32547 

  _____  

From: [email protected]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Wednesday, August 01, 2007 6:51 PM
To: [email protected]
Subject: [Repeater-Builder] Connecting Multiple TNCs

 

Hi all

Some time ago, I saw an article on how to connect two TNCs to a single
radio.  Does anyone remember such an article an either have a copy or point
me to a site where I can download it?

 

Thanks,

Dave, WA6IFI

 

 

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