You really don't need a bunch of EMF detectors to figure out what's going on. You only need one good one. One that reads amplitude, frequency and has a time adjustable history display.

For a few dollars to make an "antenna" or probe you can turn any computer with a sound card into a powerful spectrum analyser.

Using Spectrum Laboratory software This is what I use and it will out perform any cheap EMF meter easily.

Pre-assembly of the antenna probe coupled to an Asus eee pc. The probe is now housed in a PVC pipe. Die K2! And Gauss Master too.

A Adams said:

I also wondered too in the lighthouse episode why when the two (Andy and ?) were on the spiral steps and were so excited by their EMF readings and what they felt it was indicating and either then in voiceover or later said "everything was turned off" (GH's way of excusing any other electrical interference other than paranormal)–Did they really turn the lighthouse light off? Would they have turned off the solar battery cells? I wonder how much comes off these big storage cells? I don't know anything about this stuff so this may make no sense at all.

Actually you make lots of sense, and this is my biggest gripe with paranormal investigators and basic EMF meters. There's ALWAYS EMF a plenty being radiated. This becomes apparent with a spectrum analyser or even a basic audio amp connected to some wire.

El-cheapo EMF meters are basically deaf. They don't pick up the constant background hum being radiated which can be received with better equipment. At least they don't pick it up most of the time. But what happens when the background noise briefly breaks through? It's a ghost of course! Not.

To know what is setting off a meter we need to see the noise floor below the threshold of a basic EMF "ghost" meter. And again it can easily be done with a spectrum analyser or audio amp. But no that would be too easy for GH to do!

Here's my audio EMF meter. Actually it's not a meter. I listen to the noise with headphones. It easily picks up AC hum and harmonics from powerlines hundreds of metres away from any AC source. I actually built it to receive natural Earth sounds like whistlers.

NewbieGhost13 said:

So, there are better EMF readers than the ones TAPS uses? HHmm. If, so, why not use them? (That was a half a question half a statment.) Are such meters insanely exspensive then? Or difficult to use, somehow? ….

By the way, Learjet, how on earth did you make that device of yours? What is it made from? I obviously see the battery but what's the other circuitry? The mutilated inside of a handheld EMF reader?

TAPS uses the worst possible EMF meters available. There are meters out there that are infinitely superior but they don't use them. Why? Because if they did most of their ghosts would vanish into a puff of the explainable, and that would be no good would it! Sorry, but as a radio tech this really bugs me about them.

The device above is made from a UA741 opamp. It's  just an audio amp really but uses an RF pickup. With it you can hear most EMF sounds from about 50 Hertz to around 10 KHz. It only cost a few dollars to build. There are better circuits available with MOSFET front ends, which is what I will need to move to during the sunspot peak for my Earth sounds.

I should do a youtube video one day of what various EMF sources sound like.

The circuit.

Built on veroboard. Then just connect battery, plugs, sockets and put it in a box.

Whistlers are caused from lightning reflections. This video better explains Earth sounds. http://au.youtube.com/watch?v=eHvdZdsIZxg&feature=related

Some more Earth sounds here. http://www-pw.physics.uiowa.edu/mcgreevy/#latest

NewbieGhost13 said:

 It can't explain all EVPS and odd sounds but it is certainly possible for at least some of them.

Yes some of them do sound a lot like animals, frogs and birds etc. But that is just paradolia as none of what your listening to is actually audio. All these recordings are very low frequency radio signals. The signals are in a similar band to "EMF" signals, the same band in fact as EMF meters are set to like the K2 etc. However they are very weak, far below the sensitivity of any cheap EMF meter and since they are not audio, they can't be recorded by a voice recorder directly.