This was a test to see how much more stable sending morse code with a software cw keyer would be when using an ASIO SOUND CARD with its own ASIO DRIVER. A dit stream was sent at 25 words per minute and recorded. As you can hear, the dits are very steady in length and spacing. This is NOT the case when using windows own audio engines - as a previous recording has proven: Chaseology – Sending-a-morse-code-dit
Therefore when using a software cw keyer on your computer, you will have superior performance by using an ASIO DRIVER instead of any of the windows audio engines.

SENDING A MORSE CODE DIT STREAM AT 25 WPM USING AN ASIO DRIVER

chaseology