[KCDXC] Re: Help with NA

[Alan KI7WO]

Hi Jim,

I believe the pinouts for NA should be the same as for CT.  

I presume you are using the 9 pin configuration with a COM port rather
than the printer port (LPT1).

This is quote from the CT manual:
The circuit needed to key positive keyed radios from COM1 or COM2 is a 1K
resistor from DTR (pin 4 on a DB9) to the base of an NPN small signal
transistor (for example a 2N4401 or a 2N3904).  The emitter of the
transistor and the ground lead of the transmitter keying cable are
connected to signal ground (pin 5 on the DB9).  The collector of the
transistor is connected to the transmitter keying cable (hot, not
grounded side).

If you decide to change plans later I also have the LPT configuration.

Alan  KI7WO@JUNO.COM