There's something about the K2 that I haven't figured out yet. When I
listen to my 830s, 2B or the R4A, Omni V or other rigs I've owned, I
find their AGC to be very aggressive (Esp. the 2B). When a signal hits,
the AGC really drops the gain and when the signal is gone, the gain goes
way up. This creates a very high background noise level significantly
reducing the long-term apparent S/N ratio.
What I hear with the K2 is different. Background noise is lower, giving
the false impression of reduced sensitivity. Signals pop out of the
quiet background. I think I'm hearing more dynamic range in the audio
output. Loud signals are actually louder than quieter ones. With my
other rigs, the only diff between a strong and weak signal is S/N ratio.
With the K2, the recovered audio volume level is also a bit different.
Am I hearing things? Were these effects on purpose? It makes for a
very smooth operating radio that produces far less listener fatigue than
other rigs.
I operated for 1 hour in a Straight Key Sprint (or stroll as it may be)
last night using the 830s. I was happy to turn the rig off when
quitting time came around. My ears felt assaulted with the static, 850
Hz CW tone and harsh sounding sidetone. And the 830s is considered one
of the great sounding rigs.
- Keith N1AS -
- K2 5411 -
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