Waterfall question from a new waterfall guy

[Ryan Scott Bardsley]

Hello,

I am a very very new KX3 and PX3 owner and have been using this as my portable kit when I travel to NYC. I spend most of my life traveling in hotels, so I can't say I have really reached out to the world yet, but it certainly makes the stay a bit more fun. The KX3 and PX3 combo has been wonderful to bring on the train, setup at the hotel, and fiddle around with after work.

I have a naïve question about the waterfall. What exactly are the vertical lines that seem to follow the VFO as I tune around? Are they the resonant frequencies of the KX3? I am running both units on a battery, so I can't imagine it is noise from a wall wart. But I seem to see the same thing when operating at home. On the PX3, I see the green freq/bandwidth bar move when I rotate the VFO on the KX3. But the vertical traces seem to follow along with that.

Being very new to this functionality... what exactly am I seeing?

I made a short video here: https://youtu.be/v3iwWgsIDok

Many thanks, and I love the chatter about how great a company Elecraft it. I have not had a single issue with my radio and am really happy with my purchase.

73

Ryan




N1CDX — Ryan Bardsley
Manchester-by-the-Sea, Massachusetts
Unites States of America

Grid square: FN42on
ITU zone: 8  CQ zone: 5
WGS84: 42.579234, -70.771966

e-mail: [hidden email] <mailto:[hidden email]>
mobile: [phone]

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[gt-i]

Ryan,
The traces I can see are signals of other stations. The KX3 (as any
other SDR) has a limited bandwidth to display, so it will shift the
display window while your are tunining out of your displayed frequency
window. So, if the traces you refere to depend on the tuning speed of
your VFO movements, we might talking about the same thing.

You may want to tweak your display a bit: change your vertical scale a
bit higher to see the signals starting from the noise floor up to their
peaks.

Happy waterfalling!
73 Gernot DF5RF

Am 11.12.2019 um 22:00 schrieb Ryan Scott Bardsley:

> Hello,
>
> I am a very very new KX3 and PX3 owner and have been using this as my portable kit when I travel to NYC. I spend most of my life traveling in hotels, so I can't say I have really reached out to the world yet, but it certainly makes the stay a bit more fun. The KX3 and PX3 combo has been wonderful to bring on the train, setup at the hotel, and fiddle around with after work.
>
> I have a naïve question about the waterfall. What exactly are the vertical lines that seem to follow the VFO as I tune around? Are they the resonant frequencies of the KX3? I am running both units on a battery, so I can't imagine it is noise from a wall wart. But I seem to see the same thing when operating at home. On the PX3, I see the green freq/bandwidth bar move when I rotate the VFO on the KX3. But the vertical traces seem to follow along with that.
>
> Being very new to this functionality... what exactly am I seeing?
>
> I made a short video here: https://youtu.be/v3iwWgsIDok
>
> Many thanks, and I love the chatter about how great a company Elecraft it. I have not had a single issue with my radio and am really happy with my purchase.
>
> 73
>
> Ryan
>
>
>
>
> N1CDX — Ryan Bardsley
> Manchester-by-the-Sea, Massachusetts
> Unites States of America
>
> Grid square: FN42on
> ITU zone: 8  CQ zone: 5
> WGS84: 42.579234, -70.771966
>
> e-mail: [hidden email] <mailto:[hidden email]>
> mobile: [phone]
>
> ______________________________________________________________
> 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
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