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

[SAT2400]

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

 

[ideasrule]

If 75 m is 1/4 of lambda, what's lambda? Since v=f*lambda, what's f?

 

[SAT2400]

how do I know v?? lamda is 300...

 

[RoyalCat]

how do I know v?? lamda is 300...

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