[Elecraft] [K3] K3 Audio Response - Version 3.33 Firmware

[Jim Brown]

On Mon, 21 Sep 2009 10:32:27 -0700 (PDT), Ignacy wrote:

>I am hearing all that basses generated by audio gurus. 

The word "guru" implies authoritative knowledge. Those who try to turn their 
ham station into a hi-fi rig are simply misguided. In a speech to a ham 
convention, retired FCC enforcement chief Riley Hollingsworth stated that 
such things were out of place on the ham bands and that they should simply 
get a job in a broadcast station if they wanted to do that kind of thing. 

Most hams who really DO know audio limit their audio bandwidth so that their 
transmitter runs more efficiently and cuts through noise and QRM better. For 
the same reason, they also use good dynamics processing of the same sort 
that is widely used by broadcasters. Those who transmit all that bass are 
wasting at least half of their transmit power!  Those that transmit extended 
HF response are selfishly using more bandwidth and generating more QRM to 
their fellow hams.  

>As a negative, there is some RF pickup.

Speakers with built-in amplifiers are notorious for RFI. I often tour the 
aisles at audio trade shows with a THF6A VHF/UHF talkie. In ten years, I've 
seen only one amplified loudspeaker that didn't pick up RF. It cost about 
$1,500 and was made in Europe. 

73,

Jim Brown K9YC