(Creating the Circuit) There Is No Best Frequency
It’s perfectly fine to always start with your lowest frequency that your transmitter has and work your way up. We know a couple of things about low frequencies. We know that they don’t bleed off through the soil on to nearby parallel utilities as well as higher frequencies. This is a generalization. It’s not a hundred percent true, but it’s often true (Figure 42). However, a low frequency can bleed-off on to other utilities through metal-to-metal means as well (Figure 43).