options for different operating conditions.
~73
Don
KD8NNU
-.- -.. ---.. -. -. ..-
-Original Message-
From: Bill Frantz
Sent: Tuesday, November 27, 2012 6:25 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 - Audio/IF filtering definitions
In addition to the SSB examples
Sorry about that. It shows my (lack of) experience with other than the K3.
Rick nhc
-Original Message-
From: Don Wilhelm
Rick,
What you say is true for the K3 and the KX3, but you referred to
"El;ecraft" as all encompassing == which includes the K2 as well.
One would adjust the K2 au
Rick,
What you say is true for the K3 and the KX3, but you referred to
"El;ecraft" as all encompassing == which includes the K2 as well.
One would adjust the K2 audio level to just indicate one ALC bar and
then back off until it doe not light.
On 11/27/2012 6:43 PM, Rick Bates wr
That's a key point as not everyone understands that less audio is better on
PSK and most folks tend to hit the audio hard on both TX and RX. The
resulting IMD is shown as 'echoes' on the waterfall and it tends to bang on
the soundcard AGC, potentially blocking the signal you want to hear.
For non
In addition to the SSB examples several people have posted, the
Hi and Lo Cut controls are quite useful in soundcard digital
modes. For example, when I use my computer for PSK, I scan the
band with the bandwidth set to a low of 300 Hz and a high of
2.6KHz. I have a macro to set this bandwith (I
Rick,
Are you confusing HiCut/LoCut with the RX (or TX) EQ? There are no
bands to the HiCut or LoCut, just limits to the DSP produced passband.
73,
Don W3FPR
On 11/27/2012 5:37 PM, Rick Bates wrote:
The filter sets the rough bandwidth limits. Then you can shape the
resulting audio with the
Rick,
The Hi-Cut and Lo-Cut do essentially the same thing as Width and Shift,
but they make voice signals easier to deal with.
If you have played with Width and Shift on the K3 or other transceivers,
you will know that anytime you change the width control, you have to
also change the shift c
HI and LO cut controls determine the bandwidth, such as the 300 - 2700 Hz (2400
Hz bandwidth) in the example you provided.
That bandwidth is flat. However, you may elect to shape the bandwidth to
something other than flat, such as to boost the high frequencies, or cut the
dreaded "400 Hz bump"
The filter sets the rough bandwidth limits. Then you can shape the
resulting audio with the equalizer to your particular need.
You can also narrow the gross bandwidth with the width control and/or
re-center the bandpass with the shift control and/or narrow one edge of the
bandpass (at a time) wit
They keep you from having to go into Config to change equalizer for a
specific situation and they work with the RX signal directly.
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member
On Tue, 27 Nov 2012 22:16:16 +, Rick Stealey
wrote:
>
>I'm confused as to the function of
I'm confused as to the function of the receive equalization vs the width vs the
hi
and low cut.
Example - The traditional SSB filter is, say, a 2.7 KHz wide filter with the
bfo carrier 300 hz from one side of the filter passband. This provides audio
response
of 300 hz to (300+ 2700) = 3000
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