[BC] AM Stereo On A Mono Radio-FM Loudness

[Cowboy]

On Wednesday 03 October 2007 02:53 pm, Thomas G. Osenkowsky wrote:
>  It was once explained to me that the FCC van
>  used a receiver that they 'calibrated' for each
>  measurement. Hook a DC coupled scope to
>  the discriminator output when fed a dead carrier
>  at operating frequency. Set scope trace to middle
>  of scale. Now change osc freq +75 KHz. Mark
>  screen with grease pencil. Repeat for - 75 KHz.
>  Connect receiver to antenna and observe if
>  peaks fall within penciled lines. All they need is
>  an accurate frequency counter, RF oscillator and
>  receiver.

 The primary way was a bessel null, a receiver, generator, and a scope.
 UNTIL all that noise about ignoring peaks.
 Now, it's about impossible to get a "legal" measurement the old
 calibrated scope method.

 Because Mr. Small didn't know how to measure modulation accurately,
 now a dedicated black box is required.

 I still fail to understand how this is "better" ?

-- 
Cowboy