K7ITM wrote:
Are you trying to pull our leg? A google search for "Chelton Loop"
antenna turns up only references to a street, Chelton Loop, in Colorado
Springs. If there's a "Chelton Loop" antenna, it must not have had
much written about it.

If you want to detect magnetic fields at HF, a small coil of wire
should work well. The size would depend on the size of the magnetic
field you're probing, and the spatial accuracy you want. If you want
to receive electromagnetic signals, as others have posted, be careful
about claims of sensing "only" the H field.

Cheers,
Tom

wrote:
Is anyone aware of any sources of information/theory on H Field
antennas, such as the Chelton Loop for HF?


FWIW, Tom, "chelton" was probably a typo. There is
indeed a Chilton Loop Antenna at a research
facility in the UK. I think the name refers to the
loop used at the Chilton facility, rather than to
a particular antenna design.

Chuck


http://www.ukssdc.ac.uk/ionosondes/chiltonpiccys.html
Pictures from the Chilton site

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chuck wrote:

FWIW, Tom, "chelton" was probably a typo. There is indeed a Chilton
Loop Antenna at a research facility in the UK. I think the name refers
to the loop used at the Chilton facility, rather than to a particular
antenna design.

There seem to be two possible kinds of "Chilton loop".

One is at www.chilton.com, which is a web-controlled SW radio receiver
located in the USA. This is just a loop of wire in some guy's attic.

The second kind may be related to the ionosondes located at the
Rutherford Appleton Lab, Chilton, UK; and at Port Stanley, Falkland
Islands. These do use crossed loop antennas (as the referenced picture
shows)... but in 25 years living just a few miles down the road,
including 12 years of working right next to RAL and regularly eating
lunch with the hams who work there, I never heard or saw the term
"Chilton loop" until yesterday, right here.

However, I will make some specific inquiries about those loops.


Now if you want something really serious to talk about, those
RAL/Stanley ionosondes are being closed down! The scientists who work
there are horrified, because it would pull the plug on a major
international source of daily data, and terminate the world's
longest-running continuous sequence of ionospheric observations:
http://www.wdc.rl.ac.uk/wdcc1/news/closure_notice.html

(This actually looks like a clumsy political move to shift the running
costs away from the UK science budget and find some other source of
funding, using the threat of closure as a way to get attention. But
suicide bids of this kind can occasionally go wrong...)


--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

"Ian White GM3SEK" wrote in message
...
chuck wrote:

FWIW, Tom, "chelton" was probably a typo. There is indeed a Chilton Loop
Antenna at a research facility in the UK. I think the name refers to the
loop used at the Chilton facility, rather than to a particular antenna
design.

There seem to be two possible kinds of "Chilton loop".

One is at www.chilton.com, which is a web-controlled SW radio receiver
located in the USA. This is just a loop of wire in some guy's attic.

The second kind may be related to the ionosondes located at the Rutherford
Appleton Lab, Chilton, UK; and at Port Stanley, Falkland Islands. These do
use crossed loop antennas (as the referenced picture shows)... but in 25
years living just a few miles down the road, including 12 years of working
right next to RAL and regularly eating lunch with the hams who work there,
I never heard or saw the term "Chilton loop" until yesterday, right here.

However, I will make some specific inquiries about those loops.


Now if you want something really serious to talk about, those RAL/Stanley
ionosondes are being closed down! The scientists who work there are
horrified, because it would pull the plug on a major international source
of daily data, and terminate the world's longest-running continuous
sequence of ionospheric observations:
http://www.wdc.rl.ac.uk/wdcc1/news/closure_notice.html

(This actually looks like a clumsy political move to shift the running
costs away from the UK science budget and find some other source of
funding, using the threat of closure as a way to get attention. But
suicide bids of this kind can occasionally go wrong...)


--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

There is a company named Chelton that makes antennas listed on the web.
Shows reference to a lot of military stuff. If they are claiming they have
an H antenna then...............