KISS version 2.0 NPN for PTT

Submitted by VK6ZRY on Sun, 2009/10/25 - 06:24

as another Amateur has suggested use just one NPN transistor if you feel happy
with a connection between your rig and computer port.

http://wsprnet.org/drupal/node/1154

Note: the higher value resistor between RTS and base of transistor.

Just depends what transistor you have from your junk box.