ELF detector

[Larry]

Hello,

I was hoping someone could send me in the right direction to find
information on a low frequency detector.
Either a low cost purchased unit, or the schematics to build one.
I am trying to detect in the 0- 30Hz range.
I appreciate any info, Larry

 

[Art]

One concern is the ambient noises resulting from the harmonics of all the
other media worldwide currently in operation. The device will have to be
relatively sensitive while able to select the appropriate frequencie(s) that
your are interested in. The choice of antennea will also be a concern since
the resonate length at 30 Hz is moderately long, and as you go lower in
frequency the antennea length will increase to infinite. May want to do a in
depth search via the web re: LF characteristics and operations via both
surface and sub-surface reception and transmission. This may enlighten you
as to the pertinent requirements.
"Larry" <gemlover@tampabay.rr.com> wrote in message
news:13667c89.0409242352.849bb0f@posting.google.com...

Hello,

I was hoping someone could send me in the right direction to find
information on a low frequency detector.
Either a low cost purchased unit, or the schematics to build one.
I am trying to detect in the 0- 30Hz range.
I appreciate any info, Larry

 

[Clint Sharp]

In message <13667c89.0409242352.849bb0f@posting.google.com>, Larry
<gemlover@tampabay.rr.com> writes
Generally, about seven pints of beer helps me detect elves.... YMMV of
course.


Seriously though, you might want to check out some of the paranormal
websites, they seem to do a natty line in various types of meter to
detect 'phenomena' which, IIRC, include ELF fields of the magnetic and
electrical sorts.
--
Clint Sharp

 

[Don Kelly]

"Clint Sharp" <clint@clintsmc.demon.co.uk> wrote in message
news:t$ll2VF2EpVBFwBi@clintsmc.demon.co.uk...

In message <13667c89.0409242352.849bb0f@posting.google.com>, Larry
gemlover@tampabay.rr.com> writes
Generally, about seven pints of beer helps me detect elves.... YMMV of
course.


Seriously though, you might want to check out some of the paranormal
websites, they seem to do a natty line in various types of meter to
detect 'phenomena' which, IIRC, include ELF fields of the magnetic and
electrical sorts.
--
Clint Sharp

The problem there is that even if one gets a good reading of a magnetic
field or an electrical field in any direction, most don't know what to do
with the data or what it means. Also, there must be care taken in the actual
measurements- for example waving a handheld device around will not get you
good electric field measurements as ones body distorts the local field.
--
Don Kelly
dhky@peeshaw.ca
remove the urine to answer .

 

[Clint Sharp]

In message <QBL5d.524334$M95.17571@pd7tw1no>, Don Kelly
<dhky@peeshaw.ca> writes

The problem there is that even if one gets a good reading of a magnetic
field or an electrical field in any direction, most don't know what to do
with the data or what it means.
The cynic in me would suggest that's because there's no 'what to do'

with the data, just a bunch of paranormal cobblers.

Also, there must be care taken in the actual
measurements- for example waving a handheld device around will not get you
good electric field measurements as ones body distorts the local field.
Of course, but that's not to say the OP couldn't use a handheld device

in a static location.
--
Clint Sharp