Based on feedback from DXpedition users, Elecraft has significantly
improved the K3's DSP AGC. The AGC threshold can now be set much
higher, allowing more "headroom" for tightly-packed signals at similar
amplitude.
They've also eliminated the slightly "scalloped" (non-monotonic) AGC
curve. The resulting AGC curve is very smooth, so signals right at the
threshold can't be modulated by AGC onset.
Early testers have reported excellent signal clarity in pile-up
conditions. The new code (rev 4.50 or later) is expected to be
released to beta next week.
<summary of the K3's new AGC algorithm in DSP firmware, results from several Elecraft lists and reflectors>
73,
matt W6NIA / NNN0UET
improved the K3's DSP AGC. The AGC threshold can now be set much
higher, allowing more "headroom" for tightly-packed signals at similar
amplitude.
They've also eliminated the slightly "scalloped" (non-monotonic) AGC
curve. The resulting AGC curve is very smooth, so signals right at the
threshold can't be modulated by AGC onset.
Early testers have reported excellent signal clarity in pile-up
conditions. The new code (rev 4.50 or later) is expected to be
released to beta next week.
<summary of the K3's new AGC algorithm in DSP firmware, results from several Elecraft lists and reflectors>
73,
matt W6NIA / NNN0UET
