[Elecraft] K3 Firmware Update

[Don Rasmussen]

Do I need to make note of this for when the K3 comes
so I can try both ways, or will it be included in a
new version of the K3 operators manual?

Or maybe there is a master list of all K3 firmware
revisions since the beginning of time and they are all
documented as completely as the text below? 

t u 

------------------------------------------------
NEW 100- AND 50-Hz DSP FILTERS: We've completed the
addition of high-performance 100- and 50-Hz "FIR"
(finite impulse response) DSP filters. These are
flatter than the original "IIR" (infinite impulse
response) filters, and exhibit less ringing, which is
especially noticeable in the presence of high noise.
Some operators may prefer the original filters, which
have a slightly different sound. To switch between IIR
(old) and FIR (new), tap '7' on the keypad when you're
in any filter setup menu entry (e.g., CONFIG:FLx BW).
To use the FIR (new) filters, tap '7' until you see
"IIR OFF". This is now the default for newly-shipped
K3s.

--------------------------------------------------


[Elecraft] K3 Firmware Update
wayne burdick n6kr at elecraft.com 
Fri Jan 11 12:56:35 EST 2008 

We've released a new revision of K3 firmware (both MCU
and DSP). Please see the release notes below. There's
also a new revision of the K3 Utility program. Let me
know if you have any questions.

73,
Wayne
N6KR

* * *

MCU 1.58 and DSP 1.48, 1-9-08

NEW 100- AND 50-Hz DSP FILTERS: We've completed the
addition of high-performance 100- and 50-Hz "FIR"
(finite impulse response) DSP filters. These are
flatter than the original "IIR" (infinite impulse
response) filters, and exhibit less ringing, which is
especially noticeable in the presence of high noise.
Some operators may prefer the original filters, which
have a slightly different sound. To switch between IIR
(old) and FIR (new), tap '7' on the keypad when you're
in any filter setup menu entry (e.g., CONFIG:FLx BW).
To use the FIR (new) filters, tap '7' until you see
"IIR OFF". This is now the default for newly-shipped
K3s.