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K3: Filter settings when changing bands

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Ed K1EP

K3: Filter settings when changing bands

Has anyone seen this?

Say I am on 12M USB. Filter width is set to 2.7. I switch to CW,
set filter to 400. Everything is fine. I switch bands to 17M CW by
tapping the band down twice fast. Filter is set to 2.7, so I change
it to 400. I switch back to 12M, both USB and CW filter settings are
correct, I can toggle between the two modes. I then go from 12M USB
back to 17M CW by tapping band down twice. The filter on CW is back
again to 2.7. Why wouldn't it remember the last setting I had for
CW? It was last set to 400 when I was on 17M CW. I changed bands
and came back, it now was changed. I used these two bands, but I
think maybe it would happen on two randomly chosen bands. Am I
missing something here? Or maybe I have been chasing too many DX this morning.

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Bjorn

Re: K3: Filter settings when changing bands

On 080323 15:32 , "Ed K1EP" <[hidden email]> wrote:

> Has anyone seen this?
>
> Say I am on 12M USB. Filter width is set to 2.7. I switch to CW,
> set filter to 400. Everything is fine. I switch bands to 17M CW by
> tapping the band down twice fast. Filter is set to 2.7, so I change
> it to 400. I switch back to 12M, both USB and CW filter settings are
> correct, I can toggle between the two modes. I then go from 12M USB
> back to 17M CW by tapping band down twice. The filter on CW is back
> again to 2.7. Why wouldn't it remember the last setting I had for
> CW? Try this;

Go 17 CW, adjust filter for narrow setting.

Go 15 CW, adjust filter for narrow setting.

Go 12 SSB, adjust filter for wide 2.7.

SLOWLY step down one band at a time to 17. The K3 retains all settings. Then
try the same step down to 17 by double clicking band down fast and observe
the results... Both 17 and 15 meters will still be CW, but the width has
changes to whatever wide setting you had at 12.

Now, with the filter untouched step one band up from 17 to 15, then narrow
the filter and step down again. Voila! 17 follows whatever setting you made
on 15!

Not a big problem, but this behaviour is a little irritating. The solution
seems to be slowly cycling between bands.

The behaviour is similar when changing band using software control via the
serial port. I am sure this is the reason TRX-Manager (and probably other
software packages too) gets the K3 filter settings confused.

73 de Björn /SM0MDG

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M0XDF

Re: K3: Filter settings when changing bands

Fantastic - I've been wondering what was cuasing that - it's a problem
if your logger changes band, too it seems.

Lyle, could you comment please?
--
73 de M0XDF / K3 #174

On 23 Mar 2008, at 21:46, Björn Mohr wrote:

> On 080323 15:32 , "Ed K1EP" <[hidden email]> wrote:
>
>> Has anyone seen this?
>>
>> Say I am on 12M USB. Filter width is set to 2.7. I switch to CW,
>> set filter to 400. Everything is fine. I switch bands to 17M CW by
>> tapping the band down twice fast. Filter is set to 2.7, so I change
>> it to 400. I switch back to 12M, both USB and CW filter settings are
>> correct, I can toggle between the two modes. I then go from 12M USB
>> back to 17M CW by tapping band down twice. The filter on CW is back
>> again to 2.7. Why wouldn't it remember the last setting I had for
>> CW? Try this;
>
> Go 17 CW, adjust filter for narrow setting.
>
> Go 15 CW, adjust filter for narrow setting.
>
> Go 12 SSB, adjust filter for wide 2.7.
>
> SLOWLY step down one band at a time to 17. The K3 retains all
> settings. Then
> try the same step down to 17 by double clicking band down fast and
> observe
> the results... Both 17 and 15 meters will still be CW, but the width
> has
> changes to whatever wide setting you had at 12.
>
> Now, with the filter untouched step one band up from 17 to 15, then
> narrow
> the filter and step down again. Voila! 17 follows whatever setting
> you made
> on 15!
>
> Not a big problem, but this behaviour is a little irritating. The
> solution
> seems to be slowly cycling between bands.
>
> The behaviour is similar when changing band using software control
> via the
> serial port. I am sure this is the reason TRX-Manager (and probably
> other
> software packages too) gets the K3 filter settings confused.
>
> 73 de Björn /SM0MDG

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KK7P

Re: K3: Filter settings when changing bands

> Fantastic - I've been wondering what was cuasing that - it's a problem
> if your logger changes band, too it seems.
>
> Lyle, could you comment please?

Not my area of expertise, I'm afraid.

Lyle

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M0XDF

Re: K3: Filter settings when changing bands

In reply to this post by Bjorn

Someone from elecraft please comment?
--
73 de M0XDF / K3 #174

On 23 Mar 2008, at 21:46, Björn Mohr wrote:

wayne burdick

re: K3: Filter settings when changing bands

Administrator

In reply to this post by Bjorn

Ed,

Thanks for identifying a way to reproduce this behavior, which had
proven elusive. Using your method, I've now found the cause and fixed
it, and it'll work correctly in the next firmware release.

73,
Wayne
N6KR

> Say I am on 12M USB.  Filter width is set to 2.7.  I switch to CW,
> set filter to 400.  Everything is fine.  I switch bands to 17M CW by
> tapping the band down twice fast.  Filter is set to 2.7, so I change
> it to 400.  I switch back to 12M, both USB and CW filter settings are
> correct, I can toggle between the two modes.  I then go from 12M USB
> back to 17M CW by tapping band down twice.  The filter on CW is back
> again to 2.7.  Why wouldn't it remember the last setting I had for
> CW?

---

http://www.elecraft.com

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M0XDF

Re: re: K3: Filter settings when changing bands

and now listed on the Wiki
--
73 de M0XDF / K3 #174

On 24 Mar 2008, at 18:01, wayne burdick wrote:

> Thanks for identifying a way to reproduce this behavior, which had
> proven elusive. Using your method, I've now found the cause and
> fixed it, and it'll work correctly in the next firmware release.
>
> 73,
> Wayne
> N6KR

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