K3 filter switching in AM mode

[Wolfgang Peringer]

Hello:

Installed a 6 Khz AM-filter and have the following problem:

Filter slot 1:  6Khz Filter

Filter slot 2: 2.7 Khz Filter

Both of the filters are configurated as receive filters for AM mode.

When I switch from filter 1 to filter 2 in AM mode the filter 2 (2.7
KHz) is shown in the display but the bandwith is 1.35 KHz. When using
the width control to widen the width the K3 switches to filter slot 1.
It is not possible to use the 2.7 Khz filter in AM receive.

Any suggestions?

73

Wolfgang

dk7cy


______________________________________________________________
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]

Wolfgang,

The width displayed is the audio width.  An AM signal has 2 sidebands,
so it is twice as wide as the audio frequency displayed.
If you want to listen to AM in a 1.35 kHz width, then it is possible,
but there will be few highs, and will likely not be intelligible.

You can use SSB mode to listen to one sideband of the AM signal.

73,
Don W3FPR

On 8/9/2018 1:19 PM, Wolfgang Peringer wrote:

> Hello:
>
> Installed a 6 Khz AM-filter and have the following problem:
>
> Filter slot 1:  6Khz Filter
>
> Filter slot 2: 2.7 Khz Filter
>
> Both of the filters are configurated as receive filters for AM mode.
>
> When I switch from filter 1 to filter 2 in AM mode the filter 2 (2.7
> KHz) is shown in the display but the bandwith is 1.35 KHz. When using
> the width control to widen the width the K3 switches to filter slot 1.
> It is not possible to use the 2.7 Khz filter in AM receive.
>

______________________________________________________________
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]

[Grant Youngman-2]

Or use AM SYNC mode ..

Grant NQ5T
K3 #2091 KX3 #8342

> On Aug 9, 2018, at 1:54 PM, Don Wilhelm <[hidden email]> wrote:
>
> Wolfgang,
>
> The width displayed is the audio width.  An AM signal has 2 sidebands, so it is twice as wide as the audio frequency displayed.
> If you want to listen to AM in a 1.35 kHz width, then it is possible, but there will be few highs, and will likely not be intelligible.
>
> You can use SSB mode to listen to one sideband of the AM signal.
>
> 73,
> Don W3FPR
>
> On 8/9/2018 1:19 PM, Wolfgang Peringer wrote:
>> Hello:
>> Installed a 6 Khz AM-filter and have the following problem:
>> Filter slot 1:  6Khz Filter
>> Filter slot 2: 2.7 Khz Filter
>> Both of the filters are configurated as receive filters for AM mode.
>> When I switch from filter 1 to filter 2 in AM mode the filter 2 (2.7 KHz) is shown in the display but the bandwith is 1.35 KHz. When using the width control to widen the width the K3 switches to filter slot 1. It is not possible to use the 2.7 Khz filter in AM receive.
> ______________________________________________________________
> 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]

______________________________________________________________
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]