[aprssig] TNC220 ok for UI-DIGI ?

Mark Earle wa2mct at mearle.com
Fri Mar 11 14:06:06 CST 2005

At 05:04 AM 3/12/2005 +1000, you wrote:
 >Whats constitutes a TNC2 Clone ?
These days, that would be:
1. Genuine TAPR TNC-2 (almost impossible to find)
2. Pac-Comm Tiny-2 or Mark-2
3. MFJ 1270 series.

We've used the Pac-Comms with good success. I prefer them over MFJ, because 
the MFJ has a "tuneable" modem, and may drift at sites with wide 
temperature variations. The modem chip used in the Pac-Comm is crystal 

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