[BC] Supermodulation

[DANA PUOPOLO]

It used to make stations very 'wide' on analog AM receivers, particularly when
used with pre-emphasis and audio response out to 15 kHz.

-D



------ Original Message ------
Received: Wed, 11 May 2005 06:19:18 PM PDT
From: Robert Meuser <Robertm at broadcast.net>
To: Broadcast Radio Mailing List <broadcast at radiolists.net>
Subject: Re: [BC] Supermodulation



Mark Humphrey wrote:
> These stories about the "supermodulation" wars have
> intrigued me, but the heyday of unregulated positive
> peaks was a bit before my time.... so here's the
> question:  
> 
> Were there actually any confirmed and documented cases
> of harmful interference that resulted from stations
> modulating above 125% positive?  In other words, was a
> new FCC rule really needed to protect innocent
> bystanders?  Or was this, in fact, only a response to
> some politically-connected 50 kW operators crying foul
> because the "hot-rodded" 5 kW guys were beating them
> in loudness?


AFIK it was mostly political ala NAB vs LPFM.

R

_______________________________________________
This is the BROADCAST mailing list
To send to the list, email: broadcast at radiolists.net
For sub changes, archives and info on this other lists:
http://www.radiolists.net/