Total posts : 45366
Carl, you’re absolutely correct – 15.221 has no limitation on power – as with the FM rule, it is solely a field strength limitation. And the calculation favors the low end of the band. It works out to about 300 ft / 100 m from the power line. Kicker: With Neutral Loading, you can bypass the transformer’s “natural” filtering, and get some significant ranges, depending on just how long that neutral run is between grounds. As an aside – when I was running some tests, I discovered that such a system can also gain some NVIS coverage – Near-Vertical-Incidence Skip. The footprint is rather small by comparison, but it’s possible. I received the test signal at about 3 miles from the station – well beyond the direct/groundwave, which had faded out about where expected. I double-checked against possible conducted signal – and where I was getting the signal had no direct connection – different substation, even – to the primary lines.