What Frequency Does a 75m High AM Radio Antenna Transmit?

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A 75m high AM radio antenna functions as a quarter wavelength (λ/4) radiator, leading to the calculation of the transmission frequency. To find the frequency, the wavelength (λ) is determined to be 300m, as λ = 4 * 75m. Using the formula v = f * λ, where v is the speed of radio waves (approximately 300,000,000 m/s), the frequency (f) is calculated to be 1 MHz. The confusion arises around understanding the relationship between wavelength, frequency, and the speed of electromagnetic waves. Clarification on these concepts is essential for solving the problem correctly.
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Homework Statement



The radio atenna for an AM station is a 75m high tower that is equivalent to lamda/4
Another lamda/4 corresponds to the ground reflection. At what frequency does the station transmit?

Homework Equations



v=f times lamda?!?


The Attempt at a Solution


THe answer was 1MHz..which is 1000Hz!?
hmm,, I don't get this..Please helP! Thanks
 
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If 75 m is 1/4 of lambda, what's lambda? Since v=f*lambda, what's f?
 


how do I know v?? lamda is 300...
 


SAT2400 said:
how do I know v?? lamda is 300...

What is the velocity of radio waves (EM radiation)?
 

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