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Overunity Machines Forum



AM frequency range in the US ?

Started by DeepCut, November 14, 2010, 07:11:08 AM

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DeepCut

November 14, 2010, 07:11:08 AM
Hi.

I'm trying to find the AM frequency range used in the US, i have googled and got 4 different answers.

Any help greatly appreciated.


Thanks,

Gary.

Groundloop

#1
November 14, 2010, 07:49:51 AM
Gary,

If you go here: http://www.overunity.com/index.php?action=downloads
you will find a Frequency Allocation Chart covering all frequencies in the US.
The name of the file is: "US Frequency Allocation Chart".

Alex.

DeepCut

#2
November 14, 2010, 10:13:50 AM
Thanks Alex, at last a definitive source !


Gary.


FatBird

#3
November 14, 2010, 10:24:21 AM
If you look at the Front Dial of all AM Radios, from the 1930s all the way forward to today, it says:

550 KHz thru 1600 KHz.

Of course the older radios say 550 KC thru 1600 KC (KC for Kilocycles because KiloHertz wasn't adopted before about 1960).


.

DeepCut

#4
November 14, 2010, 10:41:24 AM
Nice one FB i got that from wikipedia just before Alex's chart was posted.

Seems that AM is split into groups :

        Long wave : 148.5 to 283.5 kHz

   Medium wave : 520 to 1,610 kHz

   Short wave : 1.711 to 30.0 MHz


Gary.


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