[BC] voices

[CBoone]

At KLVI in the 70s we had a CCA 5KW xmtr that never liked asym mod (just to
do 100% mod meant pushing the 4-1000 mod tubes past their max plate
dissapation!) but the audio chain with a LA4, a 7 band EQ and then a BL40,
sounded great!!....until a certain song came along: "Loving You" by Minnie
Ripperton....her real high notes kept tripping the final plate breaker!! Was
I glad when that song went out of rotation :)

> -----Original Message-----
> From: broadcast-bounces at radiolists.net 
> [mailto:broadcast-bounces at radiolists.net] On Behalf Of Clive Warner
> Sent: Saturday, May 14, 2005 10:00 AM
> To: broadcast at radiolists.net
> Subject: [BC] voices
> 
> >The real
> >difference in symmetry was in human voices.  I was impressed at one 
> >lady
> whose
> >voice was 10 to 15% higher on the positive peaks.
> 
> It is surprising what waveforms you see on voice. On Masirah 
> we would broadcast the Koran every day on the Arabic service 
> which was mainly aimed at Saudi Arabia (and very popular 
> there, as I personally verified later on).
> Quite often I would see perfect sine wave modulation at 100% 
> while the Mullah was singing the opening verses, and held at 
> such an accurate pitch that the waveform would be steady and 
> not 'drift' across the scope.
> This of course was the time that the big transmitters would 
> be likely to trip.
> And on one day, during one of those long 100% modulated 
> notes, it did indeed blow up one of the monster high-pressure 
> capacitors (an 8 hour repair job) and I remarked without 
> thinking, 'Oh, it's the bloody Koran again, blown the final' 
> at which point the Pakistani technicians walked out because I 
> had insulted the Holy Book.
> - Clive