[CM] fm again

edgar-rft@web.de edgar-rft at web.de
Wed, 21 Nov 2007 06:34:34 +0100

Hi all,

> For an FM transmitter what it is the minimum length of the antenna for 
> broadcasting at a frequency around 100MHz. ? 

There is no minimum length for electromagnetical radiation. AFAIK it's
1/lightspeed but that's atomic size so the 'minimum length' is probably
1 atom or just simply the smallest piece of metal you can imagine.

The 'minimum reasonable length' is considered 'lambda/4' where:

lambda = velocity / frequency

lambda = electromagnetical wave length (not LISP)
velocity = light speed
frequency = 100MHz

More broadcast information see:



- edgar

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