EhoCW has just released a new version which allows for multiple instances and the option of using WASAPI AUDIO. WASAPI AUDIO DRIVERS are almost as good as ASIO DRIVERS in regards to cw timing accuracy and low latency. Only EhoCW has the option to select WASAPI SOUND CARDS, no other software cw keyer was found that had this feature. Two instances of EhoCW are used and setup exactly the same to send iambic morse code to two different sound cards - one instance to send audio to your computer sound card so you can monitor your sidetone, and a second instance to duplicate the first EhoCW iambic keying but send its audio to another sound card, a virtual sound card, to be connected to the input of Mumble on iCW for sending morse code over the internet.
Here is the video tutorial for this setup:
HERE ARE THE LINKS MENTIONED IN THE VIDEO:
2. VB-AUDIO VIRTUAL CABLE
4. VOXENGO AUDIO SPECTRUM ANALYZER
5. FABULATECH SERIAL PORT SPLITTER
6. ARTICLE ABOUT FABULATECH and HAM RADIO
7. DIAGRAM OF SERIAL PORT INTERFACES