It was my impression, based on two sources, that for PSK31, it was
best to use the 400Hz filter (FL2 in my case), not the 2.8kHz (FL1 in
my case) filter. Was I wrong?
You must use either a 2.7 or 2.8khz filter for transmitting all modes except
AM and FM, which require separate filters. The bandwidth displayed on your
waterfall is discretionary - I like a display of 2.5khz or more so I do not
miss any signals. If a very strong signal is controlling the AGC, I try to
get it outside the pasband by changing frequency.
But to check, I went to change to the 2.8 KHz filter for the data
mode, and so while in data mode, went to the config menu. and changed
FL2: ON to NO, with the aim of then setting FL1 ON to YES. However,
the configuration menu does not have FL1, so wasn't able to test
whether my problem is that I should be using the 2.8 kHz filter.
You need to see which filter slots are occupied in your K3. The
recommendation is to put the narrowest filter in slot 1, building up to
widest filters in slot 5. Slots can be left unoccupied and do not have to
be used consecutively. You can turn ON any number of filters for receiving,
but only one filter for transmitting. The latter must be the 2.7 or 2.8khz
filter, and you designate it by its filter slot number. You should activate
all filters for CW and data mode reception; all filters of 1.8khz or wider
for LSB, USB, and AM reception. Others will differ on this suggestion.
No, but I assumed that the installation utility might be designed for
the operating system, and its development for Linux was slower than
for Windows.
I don't think the Linux firmware loader has a filter assignment tab. This
makes it easier to set up the filters. So you will do it in the CONFIG menu
on the radio. It will load all firmware versions into the K3.
When I run the k3util utility and click Copy New Files from Elecraft
Server, the new files are downloaded to the ~/Elecraft/K3_Firmware
directory. However, the downloaded files are the MCU 2.46 that came
with my K3, not the newest firmware, MCU 2.57.
Version 2.46 is the latest "released" firmware, and so is the latest version
directly accessible by the firmware utlity. Versions since that one are
"beta" software, still under test but usually fully operational. Features
get added first to the "beta" versions, and then subsequently are blessed as
"officially released". To find the "beta" software you need to set your
internet browser as specified on the Elecraft website's download page. It
can not be downloaded by the firmware loader.
Monty K2DLJ
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