| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| roberts_ecofarm | "Changing the frequency range would require either changing the duty cycle of the 555 or modulating the amplitude. I think the the probe (resistor)..." | Read more » | about 6 years ago | |||
| roberts_ecofarm | "Thanks Chris, We have multiple injection well sites in our county, and more in the works, so we are planning on covering a large area. We will be..." | Read more » | about 6 years ago |