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Narrowband A.M. Radio Aussie Stations? Interesting tidbits that Boomer found.

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ThaDood:
https://austamradiohistory.com/wp-content/uploads/2019/09/narrowband-a.m.-broadcasting-stations-1611-1701-khz.pdf   So, the USA and Canada aren't the only ones using the upper MW band.

NQC:
Hey Thadood,

Odd that these are referred to as “narrow band” .

Is this the Aussie term for X band ?

I would not think it refers the mode of transmission somehow.


de NQC

ThaDood:
Um... Now, I have to remember where I read about where 'Narrow-Band' has more to do with limited audio frequency bandwidth of these stations, like no more than 3 - 4kHz. (Not exactly hi-fi, is it?) Still, doesn't seem to stop these stations from playing music over them.

Brian:

--- Quote from: NQC on September 26, 2025, 2335 UTC ---Hey Thadood,

Odd that these are referred to as “narrow band” .

Is this the Aussie term for X band ?

I would not think it refers the mode of transmission somehow.


de NQC

--- End quote ---

The spacing of the channels is 9 kHz, the same as Europe, so no need for audio less than 4.5 kHz width providing adjacent channel transmitters are sufficiently apart, location wise.
So I guess it refers to the band.

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