The resonance of a planet is set by the travel time around the sun,
and its size.

It can be read with an ELF frequency counter.
The best place to get a reading is in caves because all the outside
electrical noise is blocked.

I became interested in this subject about 20 years ago while working
with a Doctor at the U of A medical center. He was doing a study on
frequencies and waveforms, and there effect on a lab rat. The rat had
an electrical implant into its brain. A little cable came out from
the top of its head and hooked up to a computer.

Long story short (and starting to get off topic)
I'm an Electronics Engineer, and was paid to make an sensitive ELF
detector, and it can detect the Earth Resonance. I measured it to be
7.828 hertz (7.83 if you round it off)
Anyway the planet has not shrunk, and the orbit around the Sun has
not got shorter. (That's what would cause the Freq to increase)

What I can measure, that has changed is the amplitude.
The amplitude (power)has increased, not the freq.

What I haven't figured out is, why has that frequency got stronger?
Other engineers that I've talked to think it might have something to
do with the earth core temp or global warming.
That is still up for debate.

(Newly inserted after an interesting reply)

(Nemo wrote:

"Hi Steve,
I thought I'd post a Wiki link explaining the Schumann resonance
phenomena. http://en.wikipedia.org/wiki/Schumann_resonance
Nemo"

My reply:
"After reading the info at the link, I'd have to say that the Earth
frequency that I'm measure, and frequency that Schumann talked about
are two different things.

To get my reading, I have to be in the earth, such as a cave or mine
shaft, where most radio waves are blocked out.

The article said that Schumann "predicted" it. So I guess that means
that he never actually measured it.

Being a Ham and CB operator, I do know about the Ionosphere. Even
radio stations are effected by it. During the day the Ionosphere is
higher and radio waves bounce farther. At night it mover closer, and
that is why many people loose some of the radio stations.

So lets talk about frequencies and compare it to a bouncing a ball. If
your floor is the earth, and the ceiling is the ionosphere. Every
night when the ceiling gets closer, the frequency would get faster.
So, that means every night the "Schumann resonance" is faster at
night, than during the day, and the cross over between night and day
would be a span of frequencies.?
Solar heat expands the Ionosphere, during the day, so the freq would
be slower. Also if you follow that logic, global warming would make it
even slower.
Also a thinning of the ionosphere would tend to make the freq actually
slower and not faster.

One thing that I'd have to disagree with Schumann on is the lightning
strike effect.
No "stable" frequency can be counted or calculated, or counted on to
make any stable frequency.

OK, that being said, lets say that the Ionosphere is like a bell, and
that the lightning is like the hammer hitting the bell, so the more
lightning you have, the louder the bell sounds.
Two months out of every year in Tucson, Arizona, we have Monsoon season.
Lightning bolts blast everywhere! Transformers are blasted off the
power lines. Fires are started. Thousands will strike per second, yet
during that time I don't get get a stronger Earth resonance. I do get
a lot of noise in the 100 KHZ range.
I'd like to see Schumann's formula that he used to calculate the
frequencies, because I see a problem in the calculation.
How was he able to deal with the fact that the Ionosphere moves
closer at night, and raises during the day.?

All I can say is that the freq that I've been measuring didn't change
at night, it just stays the same all the time.
So I must not be measuring the "Schumann calculated resonance".
So what do I call it?
I guess it's just the "Earth's" resonance, Or the "Steve's Measured
Resonance" (Having nothing to do with Schumann and the ever changing
Ionosphere waveguide)

Steve"