Rig - Computer CW Interface
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 square28_yellow.gif I have added CW sending features including real time keyboard, preprogrammed strings and even on-the-air code practice modules to all of my logging programs. To send CW using my software, connect your computer to your rig via either the computer's serial or parallel (printer) ports. The software uses either the RTS Line or the DTR Line of the serial port or the parallel port to send the key down command.

 square28_yellow.gif If you would like to make your own interface, below are two schematics for building an interface using the RTS line. Any transmitter that uses a "connect to ground to key" jack can use either of these schematics. Thanks to Bob, N3UR, for providing these schematics!

Direct Keying Schematic

 
(The resistor value is 4.7k)
 

Optic Coupling Schematic
(electrically separates the computer from the radio)

 

 square28_yellow.gif If you would like to purchase an interface, I have found a great supplier who is willing to help you out! W1GEE Products provides both PC Serial and Parallel Keying Modules. The serial module has been designed to provide a hardware link to your transceiver from your computer's DB-9 serial port using the DTR (pin 4 of the DB-9 connector) lead as the active signal and SGND (pin 5) as reference ground.  The parallel module uses pin 17 as the active signal and pin 1 as ground.

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 square28_yellow.gif Using my N3FJP's software programs, you can use your computer to replace the transceiver's straight key to send code. A separate key is no longer required; although one can be connected in parallel with the keying plug if desired. Please note that these units replace the STRAIGHT KEY. To function properly, you must turn off your transceiver's automatic keyer and plug the unit into the STRAIGHT KEY socket. Keying is accomplished by the tip and sleeve of the Keying Module plug in the same manner as a straight key would do.

 square28_yellow.gif Product Purchase Options

 square28_yellow.gif PC Serial Keying Module - $25.00

 square28_yellow.gif PC Parallel (printer) Keying Module - $25.00

 mail10.gif Please send Cash, Check, or Money Order payable to G. Scott Davis to purchase this product. Please add $5.00 for shipping/handling per order (US); for addresses outside the US, please add $10.00 for shipping and handling. Maryland orders please add 5% sales tax. Please be sure to include your call sign and e-mail address with your request so I can process your order promptly! Send to the address below:

G. Scott Davis, N3FJP
118 Glenwood Road
Bel Air, MD 21014-5533

 creditcard_master.gif  To purchase by credit card via PayPal, please click the icon below. After your transaction is completed, you will see a "Thank You" page, and PayPal will send you a Receipt of Payment within minutes of your transaction. When I receive Notification of Payment from PayPal, I will process your order. If you have not received confirmation from me within 24 hours, please send me an e-mail. The price below reflects a $5.00 shipping/handling fee which has been added to the purchase price.

PC Serial Keying Module - $30.00

PC Parallel (printer) Keying Module - $30.00

These products are manufactured by W1GEE and will be shipped directly from him. Any questions regarding this product should be e-mailed to w1gee@yahoo.com.

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