I don't want to join this group as I don't own this radio.
So I didn't read any of the mods
My FYI was a general info to be careful of mods having to do with
sensitivity.
Perhaps there are none for this radio as you pointed out.
I would feel much more comfortable if a modder would measure and present all
the receiver specs after the mod, one seldom sees that
So be careful, the mod you make - may or may not have been thoroughly
thought out and properly implemented
I double checked my statements with a friend who has designed receivers of
all types for many years and he concurs.
So be aware of what you are doing to the entire receiver specifications when
you make mod.
Case closed
--
CL -- I doubt, therefore I might be !
"Tom Holden" wrote in message
...
"Caveat Lector" wrote in message
news:Y5WVf.14396$6a1.13272@fed1read04...
I refer you to the Elecraft page
http://www.elecraft.com/K2_perf.htm
Sez
MDS = Minimum Discernible Signal (3db increase above noise floor). Larger
negative numbers are generally better, but too much sensitivity can
reduce strong signal dynamic range and Ip3. Pre-Amp On MDS numbers
of -130 dBm or more are more than adequate for most HF band operating,
since band noise is typically above this number. (Lower frequencies need
less MDS (more +number) due to an increase in atmospheric noise.)
--
CL -- I doubt, therefore I might be !
I have no dispute with that. Rather with your first comment:
Just FYI: I see a lot of these mods to increase sensitivity --
resulting in trashing the dynamic range
Which of these mods do you think increase sensitivity at the expense of
dynamic range?
You did not answer the question. The answer may well be 'none'. I'm not
aware of any aimed at increased sensitivity, unless adding an amplified
preselector counts as a mod. And that could arguably be for improved
dynamic range and sensitivity by improving front-end selectivity and noise
figure. Most regard the DX-394 as a very sensitive receiver that is
outperformed in that spec by few others. But itcould do with improved
overload threshold and IP3.
Methinks you might be trashing imagined mods rather than the ones
well-documented in the user group.
Tom