Good Morning Thomas ...
The variable BW filter concept was pitched early on - before the K3 was
first produced. But nothing has come of it, so don't hold your breath.
Even if it does materialize, it probably wouldn't cover an extremely broad
range, such as 10 KHz to CW widths.
So go ahead and
Craig D. Smith wrote:
For this purpose, the 13 KHz is better as you point out.
FWIW, I directly compared the 6Khz and 13Khz filters on AM receive in my K3,
which has the latest dsp updates (includes a 4Khz low pass audio filter).
The a.m. receive audio passband was 4Khz wide with either
The a.m. receive audio passband was 4Khz wide with either filter.
The 13Khz filter did not provide wider audio as expected in my K3.
Unless your AM filter is significantly wider than the published 6 KHz
or you are using the Sync detector with the IF filter offset for one
sideband, the AM
It's a tradeoff. 13 KHz gets you FM capability on TX, but should not
be used for AM. The 6 KHz filter is adequate for SWL and allows AM
TX.
Personally, I have no need for AM TX, so using the 13 KHz filters (one
in each RX), also allowing regular FM on TX/RX. This is useful if you
have the
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