[Elecraft] KX3 AM-breakthrough

[Uwe Hermanns]

Hi Klaus,

my KX3 has sometimes also strong AM-Breakthrough. It is very annoying :-(

73 de Uwe, DL4AC
Am 29.07.2013 11:50 schrieb "Klaus Dittrich" <kladit at arcor.de>:

>
> My KX3 when driven by a allband shortwave antenna
> shows am-breakthough at all bands above 30M
> depending on conditions.
>
> The source are far shortwave broadcast stations
> (relative to Germany),
> Iran, Pakistan, India and sometimes Deutsche Welle.
>
>
> The stations hearable then are different each time
> and very loud, S4 to S5, and so disturbing that working
> in cw is impossible for me.
>
> The antenna I use is an asymmetrical dipole(30m/40m long), tuned
> at the feedpoint by an SGV-230 autotuner and works well at all bands from
> 160m to 6m.
>
> The KX3 is designed as a portable trx. Outdoors people
> will use the long antennas which they have no room for at
> home.
>
> It seems the KX3-RX can not withstand the rf-levels
> delivered by such long antennas.
>
> ARLL and Sherweng measurents do not capture the situation
> thus showing that measurements at best always do picture
> only a part of reality.
>
> Is Elecraft working at this problem and is there a solution
> at the horizon?
>
> --
> 73, Klaus DF1TL
>
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