G4ZTR.co.uk
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VHF NFD

 

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70cms updated Feb '15

 

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An introduction to Amateur Radio

Amateur radio (often called ham radio) is a hobby in which people communicate with and experiment with radio. It’s kept me amused for 30+ years.

 

Radio amateurs are allowed to experiment with radio, and they are required to pass examinations to prove a level of competence before being granted a license. The ability to experiment also provides an important justification for reserving valuable frequency bands for use by radio amateurs. In the UK, radio amateurs are granted a license for the purpose of training themselves in wireless communication. Radio amateurs are permitted to build and modify the equipment and antennas that they use on the air.

 

There are many facets of the hobby and my particular interests lie in aerials and in making distant contacts (known as DX) on the VHF amateur bands. I also enjoy contesting, where we have to make as many contacts as possible in a given period. There is no such thing as “normal conditions” on the VHF amateur bands, and I have a particular interest in different forms of propagation, including Aurora, meteor scatter, sporadic E and Moonbounce.

 

An introduction to VHF Propagation

 

This could be the briefest introduction you'll ever see to VHF propagation !


Not possible

Difficult or unusual

Possible


 

50MHz

70MHz

144MHz

432MHz

1296MHz

Tropo

 

 

 

 

 

Meteor Scatter

 

 

 

 

 

Sporadic E

 

 

 

 

 

Aurora

 

 

 

 

 

Aircraft Scatter

 

 

 

 

 

Moonbounce

 

 

 

 

 

VHF Propagation resouces on the Web

HF and VHF Propagation