[Elecraft] Bass in audio is good

Ron D'Eau Claire ron at cobi.biz
Tue May 6 02:16:16 EDT 2008


Joe, W4TV wrote:

This is key and should be enforced.  Many years ago Bell Labs 
(and others) proved rather thoroughly that 2.4 to 2.6 KHz 
was more than adequately for "communications" purposes.  Their 
tests were specifically in relation to "toll grade" audio for 
long distance telephony.  

The FCC rules specifically required a maximum bandwidth of 2.6 
KHz on the US 60 meter channels.  That should provide a strong 
example of what FCC and NTIA consider to be the "maximum 
bandwidth necessary" for single sideband operation in amateur 
allocations. 

----------------------

Absolutely right Joe! 

But "communications" is only one part of the purpose for the Amateur
service. Amateur Radio is basically an experimenters medium and, the
"Amateur" part means that the experimentation is not necessarily with a
stated purpose. The purpose for putting a signal on the air is whatever
interests the individual that falls within the rules. That's why the rules
are very, very broad. The idea is to allow the greatest possible range of
activities on the bands.

60 meters is *not* a "Ham Band". They are non-Amateur frequencies controlled
by a whole different set of rules. Amateurs are allowed to use those
frequencies only if they comply with those rules. That does not suggest that
those rules should apply to the Amateur bands.  

Ron AC7AC




More information about the Elecraft mailing list