K3 beta-test firmware revision 2.46 is now available. Details appear
below. Be sure to use the latest revision of K3 Utility to do the
downloads.
Please send any problem reports to [EMAIL PROTECTED] For
instructions on how to load beta firmware, please see:
http://www.elecraft.com/K3/k3_software.htm
73,
Wayne
N6KR
* * *
MCU 2.46 / DSP 1.92, 10-3-2008
* 40 METER PA CURRENT REDUCTION: This revision corrects the low-pass
filter configuration used on 40 m. The 10/12 LPF, not the 6 m LPF, is
now used in-line with the 40 m LPF. This optimizes return loss, keeping
current at the target level at 100 W (about 20 A). Some K3s may have
had 40-m current drain increase running rev 2.45.
* NOTE ON AM COMPRESSION: Starting with MCU 2.45/DSP 1.92, speech
compression has been disabled in AM mode. We hope to create a more
effective compressor for AM in a future revision; the original was
adding distortion without increasing “punch”. On the other hand, the
available AM modulation level has been increased, and we’re better
utilizing the mic AGC system in this mode.
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http://www.elecraft.com
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