The only schematics I have seen are for connecting multiple TNC's to the serial port on a computer using diodes on the data lines.
If anyone happens across a schematic (That work) for connecting multiple TNC's to a radio, I would also be interested. Dan KA8YPY On Aug 2, 2007, at 9:26 AM, Duane Hall wrote: > I remember seeing the schematics you are talking about, they were > over on www.packetradio.com. I cant find them now, but they are > probably there somewhere. > > Duane > AB8QU > > Dave Novotny wrote:Hi Eric, >> >> I'm not too worried about lots of packets perhaps >> interfering/colliding with each other. I have a couple of repeater >> sites with two controllers. I want to have remote control of each >> controller. I don't want to share the RS-232 side. I'd much rather >> share the RF side. The circuit was pretty simple. It used diodes >> on the PTT for isolation and resistors to mix the TX audio. I'm not >> sure if there was any other control or not. >> >> Dave >> --- In [email protected], "Eric Lemmon" <[EMAIL PROTECTED]> >> wrote: >> >>> Dave, >>> >>> I'd like to see that article, too. Connecting two TNCs to one >>> >> radio is >> >>> easy, but allocating the RX and TX functions between two devices >>> >> is hardly a >> >>> trivial matter. Unless a buffer is used to store outbound data >>> >> while the >> >>> radio is busy receiving data on the other TNC, collisions will >>> >> occur >> >>> regularly. This should be interesting! Is this a good idea? >>> >>> 73, Eric Lemmon WB6FLY >>> >>> >>> -----Original Message----- >>> From: [email protected] >>> [mailto:[EMAIL PROTECTED] On Behalf Of >>> [EMAIL PROTECTED] >>> Sent: Wednesday, August 01, 2007 4:51 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 >>> >>> >> >> >> >> >> >> >> Yahoo! Groups Links >> >> >> >> >> >> > >
