Anyway to get better Low Frequency Audio response out of the K3?

[Harry_Yingst]

When running JT65 the K3 rolls off on the low end of the audio.

This tends to reduce the output power when trying to work a station on the low end of the waterfall.

Is there a way to open up the low end to get a little better Response on the low end?

[Lyle Johnson]

Not at present.

You might try tuning a little lower in dial frequency, say 100 or 200
Hz, to shift the signals in the waterfall to correspondingly higher
pitches.  Of course, if the waterfall is full end-to-end, then you'll
experience some roll-off at the high end.

73,

Lyle KK7P

> When running JT65 the K3 rolls off on the low end of the audio.
>
> This tends to reduce the output power when trying to work a station on the
> low end of the waterfall.
>
> Is there a way to open up the low end to get a little better Response on the
> low end?

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[Elecraft mailing list]

Thank you

I was thinking that may be the answer, at least until I start doing more JT9 & JT65 combined




________________________________
 From: Lyle Johnson <[hidden email]>
To: Harry_Yingst <[hidden email]>; [hidden email]
Sent: Wednesday, April 30, 2014 10:01 PM
Subject: Re: [Elecraft] Anyway to get better Low Frequency Audio response out of the K3?
 

Not at present.

You might try tuning a little lower in dial frequency, say 100 or 200
Hz, to shift the signals in the waterfall to correspondingly higher
pitches.  Of course, if the waterfall is full end-to-end, then you'll
experience some roll-off at the high end.

73,

Lyle KK7P


> When running JT65 the K3 rolls off on the low end of the audio.
>
> This tends to reduce the output power when trying to work a station on the
> low end of the waterfall.
>
> Is there a way to open up the low end to get a little better Response on the
> low end?
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[Larry Lopez]

Harry,

What filter are you using ?

It's my understanding that it's wider with
a AM (6 K Hz) or FM (13 K Hz) filter.

at least I home so. I bought a AM filter
and my K3 hasn't arrived yet.

Larry

[Elecraft mailing list]

I's a limitation in the K3 itself

even using the FM filter it still rolls off the bottom end





________________________________
 From: Larry Lopez <[hidden email]>
To: [hidden email]
Sent: Wednesday, April 30, 2014 10:09 PM
Subject: Re: [Elecraft] Anyway to get better Low Frequency Audio response out of the K3?
 

Harry,

What filter are you using ?

It's my understanding that it's wider with
a AM (6 K Hz) or FM (13 K Hz) filter.

at least I home so. I bought a AM filter
and my K3 hasn't arrived yet.

Larry





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[Larry Lopez]

how about at the top end ?

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[Joe Subich, W4TV-4]

The low end response does not matter if you use Joe Taylor's WSJT-X
in split frequency mode.  WSJT-X automatically shifts the transmit
frequency so the audio tones are always in the 1500 - 2000 Hz range
for optimum transmit performance and harmonic rejection.

It's time other software authors learned that lesson as well - there
would be a lot less garbage on the air.

73,

    ... Joe, W4TV


On 4/30/2014 9:34 PM, Harry_Yingst via Elecraft wrote:

> When running JT65 the K3 rolls off on the low end of the audio.
>
> This tends to reduce the output power when trying to work a station on the
> low end of the waterfall.
>
> Is there a way to open up the low end to get a little better Response on the
> low end?
>
>
>
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/Anyway-to-get-better-Low-Frequency-Audio-response-out-of-the-K3-tp7588250.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> 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]
>

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[Elecraft mailing list]

I have looked it and briefly tried it

I may have to revisit it





________________________________
 From: "Joe Subich, W4TV" <[hidden email]>
To: [hidden email]
Sent: Wednesday, April 30, 2014 11:41 PM
Subject: Re: [Elecraft] Anyway to get better Low Frequency Audio response out of the K3?
 


The low end response does not matter if you use Joe Taylor's WSJT-X
in split frequency mode.  WSJT-X automatically shifts the transmit
frequency so the audio tones are always in the 1500 - 2000 Hz range
for optimum transmit performance and harmonic rejection.

It's time other software authors learned that lesson as well - there
would be a lot less garbage on the air.

73,

    ... Joe, W4TV


On 4/30/2014 9:34 PM, Harry_Yingst via Elecraft wrote:

> When running JT65 the K3 rolls off on the low end of the audio.
>
> This tends to reduce the output power when trying to work a station on the
> low end of the waterfall.
>
> Is there a way to open up the low end to get a little better Response on the
> low end?
>
>
>
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/Anyway-to-get-better-Low-Frequency-Audio-response-out-of-the-K3-tp7588250.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> 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]

>
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