Re: [Amps] Audio BW -- Please just let us operate!!

[Vic Rosenthal <vic@rakefet.com>]

Let me try to move this discussion to a more, er, constructive plane.

A possible solution to the problem of bandwidth vs. quality is to 
develop of form of digital audio encoding that employs a data 
compression scheme similar to the variable bit rate method that's used 
in some forms of mp3 encoding.

The idea is that intelligent data compression can take advantage of 
voice characteristics to minimize the data rate necessary to transmit 
BC-quality audio.

Since the signal is digital, ultra-high efficiency class-E amplification 
could be used.  A 1.5 KW digital signal would be potent indeed -- far 
more so than a puny 375-watt carrier AM signal.

Of course you guys running BC-610's and SX-28's would have to upgrade 
your transmitting and receiving equipment.

Speaking of CW (somebody did), the ARRL proposal mentions that the 
bandwidth of a CW signal with 5 ms rise and fall times is about 150 Hz. 
 Such a signal is good for at least 60 wpm, and since the bandwith 
limit for CW is 200 Hz., the Ted McElroys among us can harden up the 
keying a bit and go even faster.

--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco


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