The Naked Scientists

The Naked Scientists Forum

Author Topic: electronics and telecommunication  (Read 2163 times)

Offline theCoolScientist

  • Jr. Member
  • **
  • Posts: 18
    • View Profile
electronics and telecommunication
« on: 20/03/2015 03:08:35 »
what is the most efficient and sensitive way of detecting VLF?


 

Offline Colin2B

  • Global Moderator
  • Neilep Level Member
  • *****
  • Posts: 1918
  • Thanked: 123 times
    • View Profile
Re: electronics and telecommunication
« Reply #1 on: 20/03/2015 05:23:53 »
what is the most efficient and sensitive way of detecting VLF?
Buy a kit

Are you interested in atmospheric effects, radio astronomy, or long distance comms? I suspect latter from your thread title (which should be altered to a question).
Most countries have a radio ham or astronomy group interested in this band so you might find one locally.

Never tried it myself, but always been interested in the results. These links might help.

http://www.ukraa.com/www/

http://www.lwca.org/

http://rsgb.org/main/technical/propagation/vlf-propagation/

http://theinspireproject.org/default.asp?contentID=3
 

Offline theCoolScientist

  • Jr. Member
  • **
  • Posts: 18
    • View Profile
Re: electronics and telecommunication
« Reply #2 on: 20/03/2015 05:31:23 »
thanx man
 

Offline evan_au

  • Neilep Level Member
  • ******
  • Posts: 4123
  • Thanked: 245 times
    • View Profile
Re: electronics and telecommunication
« Reply #3 on: 20/03/2015 10:34:48 »
Having a good antenna and a good earth connection helps a lot.
Efficient antennas are about half the wavelength - but this can become impractically large with VLF, so in general, bigger is better.
 

Offline Colin2B

  • Global Moderator
  • Neilep Level Member
  • *****
  • Posts: 1918
  • Thanked: 123 times
    • View Profile
Re: electronics and telecommunication
« Reply #4 on: 20/03/2015 13:05:58 »
Having a good antenna and a good earth connection helps a lot.
Efficient antennas are about half the wavelength - but this can become impractically large with VLF, so in general, bigger is better.

Some people use coils of wire connected to a computer sound card. Coil needs to be placed away from interference sources, and there are a lot at these frequencies.
 

The Naked Scientists Forum

Re: electronics and telecommunication
« Reply #4 on: 20/03/2015 13:05:58 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums