Re: [IRCA] TAs and TPs--Carrier without audio

["Bob Young" <youngbob53@xxxxxxx>]

That is why European stations sound so much better if you can get them in 
clearly enough to hear them. American stations are compressed all to hell, 
they figure the louder the station the more likely you are to keep tuned to 
it while you are tuning around the band.

Bob Young
Millbury, Ma


>From: Charles A Taylor <MWDXer@xxxxxxx>
>Reply-To: Mailing list for the International Radio Club of 
>America<irca@xxxxxxxxxxxxxxxx>
>To: Mailing list for the International Radio Club of 
>America<irca@xxxxxxxxxxxxxxxx>
>Subject: Re: [IRCA] TAs and TPs--Carrier without audio
>Date: Wed, 14 Mar 2007 20:48:34 -0400
>
>At 02:59 AM 3/13/2007 -0400, you wrote:
> >Carriers without audio on TAs and TPs is a result of
> >under modulation of the audio part of the signal,yes
> >or no?
>
>Bill,
>
>I was told some twenty years ago that European broadcasters
>hold their modulation to about 80% peaks, and don't use the
>"supermodulation" techniques used here in NA.
>
>Consequently, their modulation density is much lower than
>for Region II stations.
>
>I observed that the Asians generally modulate to 100%, but
>I don't think they "supermodulate" (peaks to 125% of carrier)
>as Region II stations do.
>
>If Saudi Arabia used supermodulation techniques on their
>2-megawatt 1521-kHz rig, we'd sure know it quick. They
>must hold their peaks down to 75% or so.
>
> >73,
>
>Charles
>
>
>
>         -----
>Charles A Taylor, WD4INP
>Greenville, North Carolina
>
>
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