Bill W5WVO wrote:
Chris Kantarjiev wrote:
An interesting artifact of this is that at the very bottom of the AF
pot's range, there seems to be an area where I can hear very weak
signals but the atmospheric noise hasn't quite come in...
This is fascinating. It could be an artifact of the radio's design,
or... Could we possibly be seeing a process here in which the dynamic
range of the human ear/wetware is being increased by lowering the
amplitude range of the input? Maybe mammalian ears evolved to work
better (i.e., more discrimminatingly) at lower volume levels... This
might make sense in evolutionary terms, when you come to think about it.
Or my ears could be broken :-)
Now that you mention it, though, it mimics my experience at louder
volumes, where turning the AF gain *down* makes the signal stand out
more and copy easier.
I was just really surprised to hear the volume of the noise seem to come
up separately from the signal. And pleased to find that I could hear the
signal with the EarJams on, and that it was completely missing with them
off ... but I don't have a closed headphone to compare with.
All this will probably be moot in, oh, a couple of years when the
sunspots come back :-)
73 de chris K6DBG
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