Ramsey Electronics TCCI-1 - Manual (Page 4)

TCCI-1 • 4
INTRODUCTION:
The J-Com Transceiver Control Computer Interface provides the
appropriate “level shift” of signals between your computer’s RS-232 COMM
port and your transceiver’s TTL computer control connection. By using low
power integrated circuit devices to make these conversions, we have been
able to package the entire interface into the shielded hood of a DB25 type
RS-232 connector. Because only 3.5 - 6 mA of current is required, the
interface is able to “borrow” power from the computer for its operation.
TX
RX
RS232
levels
RS232
levels TX
RX
pc
Kenwo
od
inverters
level
shifting
level
shifting
pc radio
radio
Everything but
Kenwood
TCCI Block Diagram