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XFIL on K3

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Robin Kiszka

XFIL on K3

Hi,

I have some questions regarding XFIL on the K3.

When I look at the display it does not display FL1, and using XFIL tracks through FL2, FL3 and FL4, but never Fl1 ?.

In the menu I see FL2 BW, FL2 FRQ, FL2 GN, FL2 ON, but nothing for FL1, FL3 and FL4 ?

Also, when I hold XFIL button down, on say FL2, it says N/A, and it does this for FL3 and FL4 too.

I read that manually adjusting the bandwidth and Lo and Hi cuts on the front panel will cause the appropriate FL to be used. However the display sticks on FL2 ?

I would really appreciate some help trying to understand this.

73

Robin

5P5R/OZ6ABN

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Don Wilhelm

Re: XFIL on K3

Robin,

It will work like yours does if you only have one filter configured and
that filter is in the filter 2 location. If there is only one filter,
it must be either the 2.7 or 2.8 kHz width filter.

If you don't know which filters are installed, you will have to
physically examine them (remove the top cover), determine their width
and their offsets (if any) and which filter slot they are installed. If
you have the subRX installed, you will have to remove it to see the
filters on the main board, and also lift the cover on the SubRX assembly
to determine which filters are installed there.

There may be a sticker on the inside of the top cover showing which
filters are installed in the Main and with the SubRX installed, there
may be a similar sticker on the top of the subRX cover.

Once you know the filters, you can use either the menu or (easier) K3
Utility to configure the filters.

With the filters properly configured, yes the selected filter will
change automatically as you adjust the width control (or HI CUT and LO
CUT). Alternately, you can manually select the filters with the XFIL
button.

73,
Don W3FPR

On 11/23/2019 1:59 PM, [hidden email] wrote:

> Hi,
>
>
>
> I have some questions regarding XFIL on the K3.
>
>
>
> When I look at the display it does not display FL1, and using XFIL tracks through FL2, FL3 and FL4, but never Fl1 ?.
>
> In the menu I see FL2 BW, FL2 FRQ, FL2 GN, FL2 ON, but nothing for FL1, FL3 and FL4 ?
>
> Also, when I hold XFIL button down, on say FL2, it says N/A, and it does this for FL3 and FL4 too.
>
> I read that manually adjusting the bandwidth and Lo and Hi cuts on the front panel will cause the appropriate FL to be used. However the display sticks on FL2 ?

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Nr4c

Re: XFIL on K3

Don’t forget, filters must be installed in descending bandwidth. The 13KHz filter (if installed) must be in slot 1 I believe. Right, Don?

Sent from my iPhone
...nr4c. bill

> On Nov 23, 2019, at 2:39 PM, Don Wilhelm <[hidden email]> wrote:
>
> Robin,
>
> It will work like yours does if you only have one filter configured and that filter is in the filter 2 location. If there is only one filter, it must be either the 2.7 or 2.8 kHz width filter.
>
> If you don't know which filters are installed, you will have to physically examine them (remove the top cover), determine their width and their offsets (if any) and which filter slot they are installed. If you have the subRX installed, you will have to remove it to see the filters on the main board, and also lift the cover on the SubRX assembly to determine which filters are installed there.
>
> There may be a sticker on the inside of the top cover showing which filters are installed in the Main and with the SubRX installed, there may be a similar sticker on the top of the subRX cover.
>
> Once you know the filters, you can use either the menu or (easier) K3 Utility to configure the filters.
>
> With the filters properly configured, yes the selected filter will change automatically as you adjust the width control (or HI CUT and LO CUT). Alternately, you can manually select the filters with the XFIL button.
>
> 73,
> Don W3FPR
>
>> On 11/23/2019 1:59 PM, [hidden email] wrote:
>> Hi,
>> I have some questions regarding XFIL on the K3.
>> When I look at the display it does not display FL1, and using XFIL tracks through FL2, FL3 and FL4, but never Fl1 ?.
>> In the menu I see FL2 BW, FL2 FRQ, FL2 GN, FL2 ON, but nothing for FL1, FL3 and FL4 ?
>> Also, when I hold XFIL button down, on say FL2, it says N/A, and it does this for FL3 and FL4 too.
>> I read that manually adjusting the bandwidth and Lo and Hi cuts on the front panel will cause the appropriate FL to be used. However the display sticks on FL2 ?
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Don Wilhelm

Re: XFIL on K3

Bill,

I have never seen any restrictions like that. If the filters are
properly configured, that is all that counts.

It may be a bit confusing though if (say) the filters cycle from FL3 to
FL1 to FL4 as the bandwidth is narrowed, so mmost are in fact installed
in descending bandwidth order.

73,
Don W3FPR

On 11/23/2019 3:18 PM, Nr4c wrote:

> Don’t forget, filters must be installed in descending bandwidth. The 13KHz filter (if installed) must be in slot 1 I believe. Right, Don?
>
> Sent from my iPhone
> ...nr4c. bill
>
>
>> On Nov 23, 2019, at 2:39 PM, Don Wilhelm <[hidden email]> wrote:
>>
>> Robin,
>>
>> It will work like yours does if you only have one filter configured and that filter is in the filter 2 location. If there is only one filter, it must be either the 2.7 or 2.8 kHz width filter.
>>
>> If you don't know which filters are installed, you will have to physically examine them (remove the top cover), determine their width and their offsets (if any) and which filter slot they are installed. If you have the subRX installed, you will have to remove it to see the filters on the main board, and also lift the cover on the SubRX assembly to determine which filters are installed there.
>>
>> There may be a sticker on the inside of the top cover showing which filters are installed in the Main and with the SubRX installed, there may be a similar sticker on the top of the subRX cover.
>>
>> Once you know the filters, you can use either the menu or (easier) K3 Utility to configure the filters.
>>
>> With the filters properly configured, yes the selected filter will change automatically as you adjust the width control (or HI CUT and LO CUT). Alternately, you can manually select the filters with the XFIL button.
>>
>> 73,
>> Don W3FPR
>>
>>> On 11/23/2019 1:59 PM, [hidden email] wrote:
>>> Hi,
>>> I have some questions regarding XFIL on the K3.
>>> When I look at the display it does not display FL1, and using XFIL tracks through FL2, FL3 and FL4, but never Fl1 ?.
>>> In the menu I see FL2 BW, FL2 FRQ, FL2 GN, FL2 ON, but nothing for FL1, FL3 and FL4 ?
>>> Also, when I hold XFIL button down, on say FL2, it says N/A, and it does this for FL3 and FL4 too.
>>> I read that manually adjusting the bandwidth and Lo and Hi cuts on the front panel will cause the appropriate FL to be used. However the display sticks on FL2 ?
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>

Don Wilhelm

Re: XFIL on K3

My apologies for my note yesterday on this subject, it was incorrect.

I have just been informed by one of the Elecraft engineers that I erred
in my statement that the K3 filters could be in any order, so Bill was
right.
See Dick's comments to me below. I did not see that note in my early K3
manual which does state that the filters can be installed in any order -
I did not read the remainder of the note.

Also note that if you have the 13kHz filter, it must be in the FL1 slot.

73,
Don W3FPR

On 11/24/2019 8:49 AM, Dick Dievendorff wrote:
> Don, FYI:
>
> K3/K3S crystal filters should always be installed in descending width order. See K3S owner's manual, "rule #2" near the bottom of page 85. The second example shows FL1 empty. There is a similar discussion near the top of page 7 of the K3 "Installing Crystal IF Filters" document and the bottom of page 77 of the K3 owner's manual.
>
> The FM transmit filter is hard-coded as FL1. So if you need FM transmit, a 13 kHz FM filter has to be in FL1.
>
> 73 de Dick, K6KR
>
>

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Nr4c

Re: XFIL on K3

Don, no apology necessary. But this is one item I was cautioned about before I purchased.

I didn’t see your response until after Dick had responded. I’d have been confused!

I’ve ewww had my K3 now for ten years and a local guru. But I can close my eyes and Stan at any page in the manual and find something I don’t know/understand.

Sent from my iPhone
...nr4c. bill

> On Nov 24, 2019, at 1:54 PM, Don Wilhelm <[hidden email]> wrote:
>
> My apologies for my note yesterday on this subject, it was incorrect.
>
> I have just been informed by one of the Elecraft engineers that I erred in my statement that the K3 filters could be in any order, so Bill was right.
> See Dick's comments to me below. I did not see that note in my early K3 manual which does state that the filters can be installed in any order - I did not read the remainder of the note.
>
> Also note that if you have the 13kHz filter, it must be in the FL1 slot.
>
> 73,
> Don W3FPR
>
>> On 11/24/2019 8:49 AM, Dick Dievendorff wrote:
>> Don, FYI:
>>
>> K3/K3S crystal filters should always be installed in descending width order. See K3S owner's manual, "rule #2" near the bottom of page 85. The second example shows FL1 empty. There is a similar discussion near the top of page 7 of the K3 "Installing Crystal IF Filters" document and the bottom of page 77 of the K3 owner's manual.
>>
>> The FM transmit filter is hard-coded as FL1. So if you need FM transmit, a 13 kHz FM filter has to be in FL1.
>>
>> 73 de Dick, K6KR
>>
>>
>
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KeithWE6R

Re: XFIL on K3

Administrator

In reply to this post by Robin Kiszka

A hidden feature if you you want to toggle thought ALL filter slots,
even if they are empty or not selected for the current Mode!
*Go into any config menu starting with FL (except for FLTX); (IE "FLx
BW", or "FLx FRQ" or "FLx GN" or "FLx ON")
Then while in that menu, tap 6/XFIL, and it will got rotate though *ALL*
the slots.
This is good to see if you have a filter or not in a slot.
Also good to use if you want to use the AM filter on FM if you have
adjacent channel interference.
Or force a filter on a mode that is not selected.
Keith WE6R
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