MFJ 1270B TNCs
This is a '1270C' but it's close enough. :)
Configuration Notes for MFJ 1270B TNC
Datasheets for the
XR2206
&
XR2211
chips in the MFJ1270Bs
Warren Stirling's modes for the MFJ 1270B - Equalise audio output level & other "gotchas"
Description of TNC-2 & MFJ type Host Mode (Not Kantronics!)
Original by Paul T. Williamson, KB5MU, Updated by Peter Guelzow, DB2OS
MFJ Documentation for MFJ 1270C TNC
Adobe Acrobat Format (
Note
slightly different to 1270B)
TNC 2 - MFJ 1270 - Tone Calibration Procedure
Adapted from
http://gyld.online.se/mods/misc/MFJ1270
MFJ-1270B Electromagnetic Interference (And how to get rid of it
)
Source:
http://www.mods.dk/mods.php3?radio=tnc&model=mfj-1270&selectid=1073#1073
2400 Modem daughter board
Manual
&
Circuit
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