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

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Harry_Yingst

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

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

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

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

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

In reply to this post by Lyle Johnson

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

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

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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Sent from the Elecraft mailing list archive at Nabble.com.
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Larry Lopez

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

how about at the top end ?

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Joe Subich, W4TV-4

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

In reply to this post by Harry_Yingst

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
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>

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Elecraft mailing list

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

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:

>
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