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KX3 odd behaviour

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G4JQT

KX3 odd behaviour

While calibrating the KXFL3 filter I somehow got the KX3 into some weird mode where without touching it, the main display showed digits that that changed by themselves.

Unfortunately I have no idea what combination of buttons caused this and I think I switched it off to just stop it.

As far as I can tell the KX3 is behaving perfectly normally, but I'm curious to know what Tech Mode I might have got it in to and what to check to see what might have changed that shouldn't have changed.

Thanks.

73,

Ian, G4JQT
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Grant Youngman-2

Re: KX3 odd behaviour

There is an auto-mode for opposite sideband nulling to calibrate the KXFL3. I’d have to look at the manual to remember the specific keypresses for this, but it does show progress in the display (phase and gain) while running through the procedure. It is described in this document: https://ftp.elecraft.com/KX3/Mod%20Notes%20Alerts/RX%20sideband%20null%20A8.pdf.

Could that be what you put the radio into without knowing it?

Grant NQ5T

> On Sep 8, 2020, at 1:11 PM, Ian Liston-Smith <[hidden email]> wrote:
>
> While calibrating the KXFL3 filter I somehow got the KX3 into some weird mode where without touching it, the main display showed digits that that changed by themselves.
>
> Unfortunately I have no idea what combination of buttons caused this and I think I switched it off to just stop it.
>
> As far as I can tell the KX3 is behaving perfectly normally, but I'm curious to know what Tech Mode I might have got it in to and what to check to see what might have changed that shouldn't have changed.
>
> Thanks.
>
> 73,
>
> Ian, G4JQT
> ______________________________________________________________
> 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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G4JQT

Re: KX3 odd behaviour

Thank you Grant. That document is very useful. Yes, I was probably inadvertently rummaging about in that area of settings. I hope I haven't inadvertently degraded sideband rejection, and as far as I can tell all seems fine.

That document didn't come with the filter kit, which might have helped, although the procedure looks quite involved. Maybe Electraft have reasons for not encouraging fiddling with settings that are already correctly set up in the factory.

73,

Ian, G4JQT

________________________________
From: Grant Youngman <[hidden email]>
Sent: 08 September 2020 18:20
To: Ian Liston-Smith <[hidden email]>
Cc: Elecraft Refl <[hidden email]>
Subject: Re: [Elecraft] KX3 odd behaviour

There is an auto-mode for opposite sideband nulling to calibrate the KXFL3. I’d have to look at the manual to remember the specific keypresses for this, but it does show progress in the display (phase and gain) while running through the procedure. It is described in this document: https://ftp.elecraft.com/KX3/Mod%20Notes%20Alerts/RX%20sideband%20null%20A8.pdf.

Could that be what you put the radio into without knowing it?

Grant NQ5T

Nr4c

Re: KX3 odd behaviour

In reply to this post by G4JQT

Did you have anything plugged into the mic jack.

Sent from my iPhone
...nr4c. bill

> On Sep 8, 2020, at 1:13 PM, Ian Liston-Smith <[hidden email]> wrote:
>
> While calibrating the KXFL3 filter I somehow got the KX3 into some weird mode where without touching it, the main display showed digits that that changed by themselves.
>
> Unfortunately I have no idea what combination of buttons caused this and I think I switched it off to just stop it.
>
> As far as I can tell the KX3 is behaving perfectly normally, but I'm curious to know what Tech Mode I might have got it in to and what to check to see what might have changed that shouldn't have changed.
>
> Thanks.
>
> 73,
>
> Ian, G4JQT
> ______________________________________________________________
> 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]

G4JQT

Re: KX3 odd behaviour

No, not got a mic yet. No key connected either.

Thanks,

Ian

________________________________
From: Nr4c <[hidden email]>
Sent: 08 September 2020 22:36
To: Ian Liston-Smith <[hidden email]>
Cc: Elecraft List <[hidden email]>
Subject: Re: [Elecraft] KX3 odd behaviour

Did you have anything plugged into the mic jack.

Sent from my iPhone
...nr4c. bill