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- TNC2.7
-
- U34 assemble as:
- PIN Component PIN
- 1 no Connection 16
- 2 0.022 uf 15
- 3 22.1k 1% 14
- 4 226.0k 1% 13
- 5 0.0047 uf 12
- 6 0.01 uf 11
- 7 100.0k 1% 10
- 8 510k 5% 9
-
- * All Capacitors are MONOLITHICS
-
- U30 assemble as:
- PIN Component PIN
- 1 23.7k 1% 16
- 2 10.0k 1% 15
- 3 11.3k 1% 14
- 4 10.0k 1% 13 * NOTE BELOW
- 5 43.2k 1% 12
- 6 10.0k 1% 11
- 7 38.2k 1% 10 * NOTE BELOW
- 8 10.0k 1% 9
-
- In clipping off the resistor leads DO NOT clip the 10 k resistor
- lead at PIN 4. clip all other lead but that one. Bend PIN 4's lead
- frm the 10 k resistor down the side of the header and without
- touching any other pins (5 & 6) solder the end of the pin 4
- 10 k resistor to PIN 7 at the 38.2 K resistor. Turn the
- header over and clip the PIN 4 off close to the header base.
- Install this into U30 and the above into U34.
- Calibrate as follows:
- CAL:1/1152
- CAL:2/1024
- CAL:3
- use the same procedure as in the TAPR installion alinement instructions
- in the manual where the leds ALTERNATE in equal brightness to
- get an error count of 0 ... You will then be on the air...
- Tuning is EXTREMELY critical on the HF bands so be patient
- sometimes helps to set TRAC to $ffff anad monitor all frame
- activity and then turn trac off and procede to packet. Radio
- must be stable & tunable to 10HZ increments. Most digitally
- systhesized rigs today have 10 hrtz steps but dont display ot
- on the dial. ...... ENJOY JOHN
-