[KX3] Audio going low when tuning towards a strong station

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[KX3] Audio going low when tuning towards a strong station

Wouter Jan Ubbels
Hi all,

Whenever I tune my KX3 and there is a strong station nearby, the audio goes
low, it sort of sounds like the receiver is being blocked by the strong
station, or the gain is reduced automatically. As I stop tuning, the audio
comes back up to the original level.
I tried switching off the AGC which was the first thing that came to mind,
but the behaviour stays the same.
I am using DSP firmware rev 1.30 and MCU firmware rev 2.23, and have the
roofing filter installed.
Any clues as to what I may be seeing with this otherwise great rig?

73,

Wouter Jan Ubbels PE4WJ
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Re: [KX3] Audio going low when tuning towards a strong station

vk2rq
Have you got VFO NR enabled? Not sure, but maybe this is causing the effect you are observing.

If you turn VFO NR off, and get "tuning noise", then take a look at this application note:
http://www.elecraft.com/manual/KX3%20Tuning%20Noise%20Mod%20rev%20B3.pdf

If you have the latest firmware, then enabling RX SHFT=8kHz no longer prevents you from using Dual Watch feature, although it will prevent use of the roofing filter. As you get experience with the radio you'll work out the optimum settings under various conditions.

73, Matt VK2RQ.


> On 20 Nov 2014, at 2:15 am, Wouter Jan Ubbels <[hidden email]> wrote:
>
> Hi all,
>
> Whenever I tune my KX3 and there is a strong station nearby, the audio goes
> low, it sort of sounds like the receiver is being blocked by the strong
> station, or the gain is reduced automatically. As I stop tuning, the audio
> comes back up to the original level.
> I tried switching off the AGC which was the first thing that came to mind,
> but the behaviour stays the same.
> I am using DSP firmware rev 1.30 and MCU firmware rev 2.23, and have the
> roofing filter installed.
> Any clues as to what I may be seeing with this otherwise great rig?
>
> 73,
>
> Wouter Jan Ubbels PE4WJ
> ______________________________________________________________
> 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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Help: http://mailman.qth.net/mmfaq.htm
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