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- TNC2.1
- 1 kohm (1/4 watt, 5 or 10%)
- 1.5 kohm (ditto)
- 7 inches of #30 wire-wrap wire
- 2 each 1" pieces of insulated sleeving
-
- (1) Remove the 470 ohm resistor R34 adjacent to the battery and replace
- with the 1.5 kohm resistor. Solder both ends, but leave the end
- nearest the battery a bit long for the moment.
-
- (2) Cut the trace on the PCB between pins 11 and 12 of U14 (if you refer
- to the TNC2 schematic #3, you will find that U14 has 3 unused gates -
- this modification uses 2 of them).
-
- (3) Run the wire-wrap wire from U14 pin 11 to U7 pin 9. I tacked this
- wire down several places along the board using dabs of cyanoacrilate
- "super glue" to keep it neat.
- CONTINUED IN FILE TNC2.13