[BC] FCC Modulation measurements

[WFIFeng at aol.com]

In a message dated 10/03/2007 4:24:43 PM Eastern Daylight Time, 
pchristensen at ieee.org writes:

> Today, I would be surprised if the FCC still had regional enforcement staff
>  with the wherewithal, resources and time to make such detailed 
measurements.

Now, it's probably all done digitally. The signal is downconverted to some 
useful IF, then fed directly into a fast A/D converter, where a fast DSP/CPU 
computes everything you ever wanted to know about the chosen signal. Synchronous 
AM, deviation, spectral purity, bandwidth, pilot injection, subcarriers 
injection & deviation, RBDS, IBUZ, etc.

A PC probably even controls the whole thing. Park the van, push a button, 10 
seconds later, you have a readout of every signal the unit could detect. Drive 
to the next market, repeat...

Right?

Willie...




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