A CI-V interface allows a computer or other CI-V device to control a CI-V capable radio. A control progam such as CI-V Commander can be used as control software. Frequency display is updated both on the radio and in the computer display regardless of where the frequency is changed (radio dial or computer). A CI-V system in conjunction with logging software can make contesting mearly a matter of staying awake long enough to make the contacts.

The only problem has been the cost of both the interface and the software. An ICOM CT-17 costs around $140 and you can expect to pay up to another $50 or so for commercial software.

Build this simple interface and use CI-V Commander. Total cost should be under $5 and the project can be easily completed in one weekend.

The circuit is simple enough to be built 'ugly style' on a scrap of insulated board tied to a DB-25 connector. The only cable required is a length of single conductor, shielded (coax) to the I2C connection of the circuit. Thus there are no cable problems. No worries about the cable being 'null-modem' or other. No need for gender changers of any sort. There was not even any need for RFI suppression at power levels of up to 500 watts. Just make sure you use a metal DB-25 shell.

To buzy to build your own? You can still save by buying one here. Fully assembled and postpaid to addresses in the continental U.S. Use the paypal button below to order one for $35.00.