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K3 selectivity display?

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Craig Smith

K3 selectivity display?

<> Also, the XFIL display helps because you know what you have
<> installed in each slot - for example if XFIL4 is 400Hz, I know when XFIL4
is lit that
<> I am less than or equal to 400,

I'm still a couple months away from my K3, but this kind of jumped out at me
when I read the K3 manual. Why should I need to remember what roofing
filter I installed in each slot? Besides, the filters might be swapped from
time to time. My personal preference would be to see the nominal roofing
filter bandwidth displayed rather than the FL number. To me this would be
much more convenient. Is it just me, or am a missing something? Would be
interesting to hear from Eric/Wayne on this design decision as well as the
preference of other users.

73
... Craig AC0DS

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wayne burdick

Re: K3 selectivity display?

Administrator

Craig,

There are five discrete icons on the LCD (FL1-FL5) to remind you which
filter is selected at any given time. Generally you don't need to
remember what each one is, because they're selected automatically as
you rotate the WIDTH control. The numeric value of the width (etc.) is
also shown as the control is rotated.

If you'd like to get a quick reminder of what the actual crystal filter
bandwidth is, you could assign a tap or hold programmable switch
function to the crystal filter bandwidth menu entry (FLx BW).

73,
Wayne
N6KR

On Nov 14, 2007, at 2:05 PM, Craig D. Smith wrote:

> <> Also, the XFIL display helps because you know what you have
> <> installed in each slot - for example if XFIL4 is 400Hz, I know when
> XFIL4
> is lit that
> <> I am less than or equal to 400,
>
> I'm still a couple months away from my K3, but this kind of jumped out
> at me
> when I read the K3 manual. Why should I need to remember what roofing
> filter I installed in each slot? Besides, the filters might be
> swapped from
> time to time. My personal preference would be to see the nominal
> roofing
> filter bandwidth displayed rather than the FL number. To me this
> would be
> much more convenient. Is it just me, or am a missing something?
> Would be
> interesting to hear from Eric/Wayne on this design decision as well as
> the
> preference of other users.
>
> 73
> ... Craig AC0DS
>
>
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>
>

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Jeff Stai

Re: K3 selectivity display?

In reply to this post by Craig Smith

hi Craig - three things:

1. The manual advises you to order the filters from widest in XFIL 1 and go narrower from there. I
think this is good advise, to keep it easy to remember where they are. You can order them any way
you want, this is just a recommendation.

2. I don't think you will move filters very often. It is a lot of screws to remove since both the
bottom and top covers have to come off. I think 95% of the time you are just adding a new one into
an empty slot.

3. I understood that additional filters are planned, including variable filters, which would further
complicate the display if not using the XFIL notation.

hope this helps! - jeff wk6i

Craig D. Smith wrote:

> <> Also, the XFIL display helps because you know what you have
> <> installed in each slot - for example if XFIL4 is 400Hz, I know when XFIL4
> is lit that
> <> I am less than or equal to 400,
>
> I'm still a couple months away from my K3, but this kind of jumped out at me
> when I read the K3 manual. Why should I need to remember what roofing
> filter I installed in each slot? Besides, the filters might be swapped from
> time to time. My personal preference would be to see the nominal roofing
> filter bandwidth displayed rather than the FL number. To me this would be
> much more convenient. Is it just me, or am a missing something? Would be
> interesting to hear from Eric/Wayne on this design decision as well as the
> preference of other users.
>
> 73
> ... Craig AC0DS
>

--
Jeff Stai [hidden email]
Twisted Oak Winery http://www.twistedoak.com/
Winery Blog http://www.elbloggotorcido.com/
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Craig Rairdin

RE: Re: K3 selectivity display?

In reply to this post by wayne burdick

On Nov 14, 2007, at 2:05 PM, Craig D. Smith wrote:

> Why should I need to remember what roofing
> filter I installed in each slot? Besides, the filters might be
> swapped from
> time to time. My personal preference would be to see the nominal
> roofing
> filter bandwidth displayed rather than the FL number.

When you tap XFIL to rotate through the filters the discrete FLn indicator
lights up for that filter and also the VFO B display says "FL3 0.40", "FL4
0.25", etc. So you don't really have to remember.

Also my tendency is to use the WIDTH control to just dial it down and not
really think about what the absolute width is. If I can make out the signal
better, I'm happy. But either way (XFIL or WIDTH) the width is displayed.
You don't have to remember what's in what slot.

Also, you only have to take off half the bottom cover to change or move a
filter. It's the easy half IMHO.

FYI: I've been playing with both the 200 Hz 5-pole and 250 Hz 8-pole filters
and so far in my purely subjective tests I can't tell the difference between
them. What I think this means is that if you're not a numbers purist you can
get by with the cheaper 5-pole filter and probably never know the
difference. If performance means everything to you then by all means spend
more for the 250 Hz 8-pole filter and you'll be happy, too.

Craig
NZ0R
K3 #25

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Craig Rairdin

RE: Re: K3 selectivity display?

> Also, you only have to take off half the bottom cover to change or move a
> filter. It's the easy half IMHO.

... And of course the top cover. I was just pointing out you don't have to
take off the entire bottom cover.

Craig
NZ0R
K3 #25

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Craig Smith

Re: K3 selectivity display?

In reply to this post by Craig Rairdin

<> When you tap XFIL to rotate through the filters the discrete FLn
indicator
<> lights up for that filter and also the VFO B display says "FL3 0.40",
"FL4
<> 0.25", etc. So you don't really have to remember.

Thanks, all, for the quick and meaningful response. The above behavior will
help a lot. Guess I won't need that "Sticky note" pasted to the front of my
K3 afterall ;>)

Looking forward to Jan with more than the usual anticipation ;>)

73
.... Craig AC0DS

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wayne burdick

Re: K3 selectivity display?

Administrator

Craig D. Smith wrote:

> <> When you tap XFIL to rotate through the filters the discrete FLn
> indicator lights up for that filter and also the VFO B display says
> "FL3 0.40",
> "FL4 0.25", etc. So you don't really have to remember.
>
> Thanks, all, for the quick and meaningful response. The above
> behavior will
> help a lot. Guess I won't need that "Sticky note" pasted to the front
> of my
> K3 afterall ;>)

Craig,

I really liked your idea of being able to quickly see the actual XFIL
bandwidth in some convenient way. So I just changed the way the menu's
crystal filter configuration entries work: now, they always pertain to
the actual filter in use by the receiver. Before, the menu kept track
of the filter number independently as you manipulated the parameters.

This change allows the operator to immediately hear the effect of any
filter changes, without having to make sure that the receiver and menu
are set up for the same filter.

If you assign a programmable switch function to the filter bandwidth
menu entry, it'll show you the bandwidth for the present filter -- not
the filter the menu was working with, which could have been different.
I should have done it this way in the first place!

Thanks for the implied suggestion :) I'll have another firmware
release in a couple of days that includes a number of other updates as
well.

73,
Wayne
N6KR

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Edward Dickinson, III

Re: K3 selectivity display?

In reply to this post by Craig Smith

Change a setting to find out what a setting was... Hmmm... I'll have to
give that some thought.

Regards,
Dick - KA5KKT/4

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Vk2NU

Re: K3 selectivity display?

In reply to this post by Craig Smith

I have the sticky note, I just the need the K3 to stick to it!!

Patiently waiting !!

David, VK2NU

>>>>Thanks, all, for the quick and meaningful response. The above behavior will
help a lot. Guess I won't need that "Sticky note" pasted to the front of my
K3 afterall<<<<<

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AJSOENKE

Re: Re: K3 selectivity display?

In reply to this post by Craig Smith

In a message dated 11/14/2007 3:25:19 P.M. Pacific Standard Time,
[hidden email] writes:
Craig D. Smith wrote:

AJSOENKE

Re: Re: K3 selectivity display?

In reply to this post by Craig Smith

In a message dated 11/14/2007 3:25:19 P.M. Pacific Standard Time,
[hidden email] writes:
Craig D. Smith wrote: