In the past I extolled virtues of speech processing in KX3 but it seems that
this was premature. 

In a number of SSB QSOs, KX3 was not too strong despite setting COMP to the
max and MIC GAIN to a few bars. Many marginal QSOs in portable situation
where an extra few db would help quite a bit. 

LP100 has a measurement of avg to peak power. K3, my standard of comparison,
can approach -7db. KX3 does between -11 and -13db. Strangely, K2 was better
at -9db.
In comparisons, K2 sounded stronger than KX3.  So KX3 has an extra potential
of 4-6db.

So speech processor in KX3 appears to be unfinished. Not much difference
between CMP settings of 20 and 30 (max). In contrast, K3 sounds good at COMP
of 20, has contest/DX quality at about 28, and anything above 30 is way too
much.

Any comments?

K3 with earlier release of firmware also had a weak speech processor. After
a fix to firmware, K3 is now a very efficient SSB radio. 

Ignacy, NO9E






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