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Re: [ARSCLIST] FM reception way back when
From: Patent Tactics, George Brock-Nannestad
Hi Folks, Bob Cham wrote:
> The problem lies with the multiplex system that we use. When FM went
> STEREO, the FCC didn't want to obsolete all the mono receivers, as
> they had when the band changed frequency. Thus we broadcast L+R
> (mono), and L-R, which are combined to make stereo. It doesn't
> exactly make for a robust stereo signal, but it is compatible.
Isn't the problem that in stereo, the pilot tone (multiplied by two) is AM
modulated by the L-R and not FM at all? This was the system that won out.