John,
I have only the stock 2.7k filter in my K3, and in either CW or SSB
mode, I can dial a bandwidth in excess of 2.8 kHz. It should work the
same way even if the narrow filters are installed - the filter selected
automatically follows the DSP bandwidth.
73,
Don W3FPR
John Unger wrote:
I'm still waiting for my K3, but...
I guess from the fact that you went through these gyrations means that
one can't simply set the roofing filtering selection on "auto" and
dial in a DSP width of 2700 Hz., e.g., or whatever with a K3 and have
the 2700 Hz. SSB filter as the roofing filter; like I can with my Orion?
What am I missing?
73 - John, W4AU
At 04:56 PM 4/20/2008, you wrote:
I tried something last night that may be of interest to some CW ops.
Although most of us are always in search of ways to narrow CW
bandwidth, there are times when listening to CW is made more
enjoyable when the receiver is allowed to open up a bit, especially
with AFX activated.
In order to engage in wideband CW reception with the wider crystal
and DSP filters, press SPLIT, then A=>B. Set VFO A for either LSB or
USB. Then, set VFO B to CW. Next, press and hold the SUB button to
link VFO A with VFO B. The CW offset can be made to match the
sidetone frequency by setting VFO A and B to slightly different
frequencies (difference being the side-tone frequency). I stored my
settings into memory so I don't have to go through all the gyrations
next time. With this approach, the rig is transmitting CW on VFO B,
but listening in either LSB or USB on VFO A.
It's important to set the Rx frequency on VFO A up by the offset
amount (e.g., 600 Hz) for CW LSB receive, and down by the offset
amount for CW USB receive. My tests show that QSK performance
remains super-fast and is not affected with this procedure.
Paul
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