Don,
> You can set the Low end down to 0.00 if you want, and the High end to
> 4.2 kHz. Each end of the DSP filter width is independent when using
> Hi-Cut and Lo-Cut.
That is not entirely true. The maximum difference between LO and HI
is limited to 4.0 KHz. If one can stand the "roar" with LO = 0.00,
HI will not go above 4.00. If one sets HI = 4.2 for maximum hiss, LO
will not go below 0.20.
73,
... Joe, W4TV
On 4/27/2014 9:44 AM, Don Wilhelm wrote:
Larry,
Use Hi-Cut and Lo-Cut rather than Width and Shift and you will have much
better luck.
You can set the Low end down to 0.00 if you want, and the High end to
4.2 kHz. Each end of the DSP filter width is independent when using
Hi-Cut and Lo-Cut. The low end response of the audio stages will be a
limiting factor as well as the low pass filter in the audio path to keep
high frequency white noise at bay.
I do not operate ESSB, so I have not measured the response with the DSP
filter set that wide, but try it and see if that helps.
73,
Don W3FPR
On 4/27/2014 7:48 AM, Larry Wassmann wrote:
Joe maybe you can tell me where I am going wrong then. I use the 6K
ESSB filter and have the K3 set up for 4K transmission. When I, and
other look at my signal I am in fact transmitting out to 4K when
measured on a spectrum analyzers. But when I look at signals myself on
my receiver band pass display on the SA, all I can see is signals out
to about 3.5 or a little better. I have the center frequency set at
*155. I was told that is what it is supposed to be set at. If I move
the center frequency up to 200Hz yes I can receive up to 4K but the
bottom end amplitude is way down and when I try to play that audio
back via the DVR everyone says they have lost their bottom end. What
am I doing wrong? Are there other filters I should be using. I or none
of the other guys I know how to set up the K3 to faithfully capture
receive audio and play it back with frequencies below 200Hz, so if you
know how to maintain the same amplitude of signal on the receive low
end that matches the trans
mi
tted low end, we would really appreciate it. Thanks.
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