[Elecraft] K3 Filter NORM

[Stephen Prior]

Ah, that's perfectly clear now, thanks Iain.

73 Stephen G4SJP



On 06/11/2008 00:00, "Iain MacDonnell - K6IAM" <k6iam at dseven.org> wrote:

> 
> 
> 
> Stephen Prior wrote:
>> Perhaps I've got the wrong end of the stick, and it's only for curiosity's
>> sake I mention this, but I did not think it was possible to independently
>> set crystal filter and dsp bandwidth.  As I alter the width control, filters
>> kick in at the appropriate points, and if I use the XFIL button I just jump
>> between the crystal filter widths and the dsp comes along for the ride.
>> 
>> Have I missed something?  Or maybe misunderstood what is being said...
> 
> The DSP width can be adjusted within the range of the currently selected
> filter, though. The issue is that the NORM function reverts back to the
> default filter for the current mode, rather than reverting the DSP to
> the normalised width for the currently selected filter. I find this
> unintuitive too.
> 
>      ~Iain
> 
> 
> 
>> On 05/11/2008 09:49, "GM0ELP" <douglas.maxwell at virgin.net> wrote:
>> 
>>> 
>>> 
>>> The memories are a great feature, but I still think it could be augmented.
>>> 
>>> 1) The last thing I expect to happen when normalising (1/2 sec press basic
>>> function of the Norm button) is for the radio to switch filters, there is an
>>> XFIL button for that if I need it. I think this has a negative effect on the
>>> user friendliness of the transceiver.
>>> 
>>> In firmware:
>>> instead of,
>>> Change to default roofing filter for that mode and normalise DSP around it.
>>> 
>>> replace with,
>>> Determine current roofing filter in use and normalise DSP around it.
>>> 
>>> 2) When using the norm memories, I've noticed that if you memorise a 1KHz
>>> roofing filter and 700Hz DSP, then recall that memory, you get the 'wings'
>>> on the filter display associated with the passband being normalised when
>>> clearly it is not.
>>> 
>>> 
>>> 
>> 
>> 
>> 
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>