[Elecraft] [K3] AM Bandwidth

[Guy Olinger K2AV]

The 5 kHz dsp bandwidth comes into play when one uses AM synchronous
detection (AM then ALT) where the "shift" is either carrier plus upper
sideband (USB is on in display) or carrier plus lower sideband (LSB).
It actually sounds like 5 kHz bandwidth.  What I use all the time
listening to BC up above 40m.

73, Guy.

On Mon, Mar 22, 2010 at 2:54 PM, Joe Subich, W4TV <lists at subich.com> wrote:
>
>> My main question is is it normal for the BW to max out at 5.0?
>
> Yes.  The K3 "width" display represents the audio bandwidth.
> In AM the RF bandwidth is twice the audio bandwidth.  Note
> however, that the bandwidth display is somewhat confusing
> in that it represents the larger of 2 * (Fh-Fc) or 2 * (Fc-Fl)
> where Fc = center, Fh = Hi cut, and Fl = Low cut.  Further the
> maximum Fh (high cut) frequency is 4200 Hz in AM, LSB, USB and
> 2400 Hz in CW.
>
> 73,
>
>   ... Joe, W4TV
>
>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Rick Prather
>> Sent: Monday, March 22, 2010 12:41 PM
>> To: mzilmer at verizon.net
>> Cc: Elecraft Elecraft
>> Subject: Re: [Elecraft] [K3] AM Bandwidth
>>
>>
>> "Nor" is 3 khz and 1.5 kHz center.
>>
>> My main question is is it normal for the BW to max out at 5.0?
>>
>> Probably doesn't matter since there is no audible difference
>> as you advance wider than 3.2 anyway.
>>
>> Thanks,
>>
>> Rick
>> K6LE
>>
>> On 3/22/2010, at 9:11 , Matt Zilmer wrote:
>>
>> > If you press and hold the SHIFT control (see NORM on VFO
>> A), it will
>> > reset the Fc and BW to what's normal for that mode.
>> >
>> > matt W6NIA
>> > K3 #24
>> >
>> > On Mon, 22 Mar 2010 08:57:18 -0700, you wrote:
>> >
>> >> After installing the 6.0 kHz AM filter I notice the Max DSP b/w is
>> >> 5.0 and the Shift center is 1.5 kHz.
>> >>
>> >> Is this the normal set up?
>> >>
>> >> TIA,
>> >>
>> >> Rick
>> >> K6LE
>> >> # 3727
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