[Elecraft] K3/K3S: How to adjust SSB receive bandwidth up to 4.0 kHz
Joe Subich, W4TV
lists at subich.com
Thu May 12 18:28:41 EDT 2016
I don't know what's going on elsewhere but with FW 5.38 and the
KFL3B-FM I regularly get 4 KHz bandwidth (10 - 4000 Hz, or 200 -
4200 Hz) on the waterfall in WSJT-X or an audio spectrum analyzer
(e.g., Spectran, Spectrum Lab, etc.) in either SSB (LSB/USB) or
DATA (DATA A and AFSK A) modes using Line Out and the sound card
in microKEYER II.
The only necessary adjustment is to set SHIFT to 2.00, 2.10 or 2.20
if using Shift/Width or use HI/LO to set appropriate HI/LO cutoff
frequencies.
73,
... Joe, W4TV
On 5/12/2016 5:17 PM, Wayne Burdick wrote:
> I was referring to SSB mode, Bill. Not sure if this extends to DATA A mode, yet, but I'll investigate.
>
> Wayne
> N6KR
>
> On May 12, 2016, at 1:11 PM, Bill Frantz <frantz at pwpconsult.com> wrote:
>
>> I guess I'm just not getting it. I am in DATA A mode with the 13KHz FM filter automatically selected. Following Wayne's directions, I put the bandwidth controls into Lo/Hi mode and hold NORM to normalize the passband. I then turn the Hi knob to max (4.00 shows) and the Lo know to minimum (0.00 shows). When I look at the bandwidth displayed in the waterfall on fldigi, the computer is getting audio from about 150Hz to 3000Hz. What am I doing wrong?
>>
>> I am using a Tascam UX-122 mkii as a "sound card".
>>
>> 73 Bill AE6JV
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