Quote:
Originally Posted by WM6
For VLF transmitter you do not need to build special TX device if you have notebook or other sort of portable Win OS based PC with build in sound card.
To put your notebook into VLF transmitter you need only two additional things:
1. Steve Scanlon (or from other source) free software tone generator which can be downloaded here:
http://www.ringbell.co.uk/software/audio.htm
2. Coil wire antenna outer diameter >20cm (8") and windings resistance >11 Ohm with cable ended with phone 3.5 mm connector. |
A lot of thanks all you for nice thing.