Using a well-known circuit, I show you how to build a simple computer interface so that your logging software can send CW through your radio.
The logging software simulates someone using a straight key. It changes the voltage on an RS-232 pin and the electronic circuit uses a transistor as a switch, grounding the lines as though someone grounded the contacts of a straight key.
This interface will let you work a contest or pile-up using your logging software – without having to use a key or paddle. The circuit diagram came from the website of Scott Davis, N3FJP. Scott’s AC Log program is also featured in the video – although this circuit will work with any software that uses RTS or DTR to trigger the sending of morse code. (like Ham Radio Deluxe, etc.)
The circuit diagram: http://www.n3fjp.com/cwschematic.html
N3FJP website: http://www.n3fjp.com
Tripp-Lite USB to Serial Converter: http://www.amazon.com/Tripp-Lite-USA-…
In comments filed on March 23 on its Petition for Rule Making (RM 11759) seeking changes to 80 and 75 meters, the ARRL has told the FCC that its primary objective is to “rebalance” the bands by correcting a 10-year old FCC error. “ARRL’s pr... Read more
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