The K2 EMF Meter, also know as the “K-II Meter” or “Safe Range Meter”, has spawned more misinformation about what it is more than probably any other single piece of equipment in the investigators arsenal. Even the name itself has been misrepresented by various “techs” spouting “guessformation” about the apparatus. The most common seems to be that the K-II is a “second generation” meter, and I’ve even seen claims by some to even own a “K-I” meter, which never existed. The name simply comes from the company that manufactures the device, K-II Enterprises. The product, in reality, is labeled EMF Safe Range Electromagnetic Meter. They have since modified the device (constant on/off), where the on-off switch is a toggle. The original device required a user to constantly hold down the power switch, if pressure was released, the device powered off. I’ve written the company to try and find the exact date of conception, but the meter is listed on the Internet Archive of their web site on it’s first archival year, 2000. It’s been around for11 years, at the very least.
As an investigator, I’ve used the meter extensively, and have found it to be a bit more successful than others. The main advantage is, the device employees five large, bright LEDs to report measurements, which means it can be easily seen, and it does not have any audible reporting mechanism. Hence, it can be read from long distances, and not contaminate any audio recording that may be used concurrently. It also shows up on video quite nicely, and the high contrast colored LED indicators make measurements much easier to glean.
As with any instrument, T-arc has a “use and abuse” policy. If you are not familiar, intricately, with how a device works and behaves in multiple situations and circumstances, the equipment is much more prone to guesswork when it comes to interpretation. So, where it makes sense, we like take ‘em for a ride. With the K-II, I lay it around while working, watching TV, driving, and such, and simply observe how it reacts. The meter works in quite a broad range, detecting ELF, “Extremely Low Frequency” (50 – 1,000 Hz) and VLF, “Very Low Frequency”, (1,000 – 20,000 Hz). Most 2-way radios in close range set the device off to max when transmitting, as do some wireless phones. I have not yet succeeded detecting cell phone call activity, BUT, wireless communication with an access point does cause a massive reading. In other words, making a call from a cell phone won’t have much, if any, effect, but communicating with an access point, or a cell phone that simply has wireless enabled (to search for an access point) will cause a significant reading.
Of course, any EMF meter are vulnerable to these same frequency sources, so care must be taken when in use. It’s very easy to see where, intentionally or not, a fake “conversation” can be misinterpreted, or hoaxed, using devices that are almost always present during paranormal investigations. Care should be taken to control and detect possible contamination.