[Elecraft] KX3 AM-breakthrough

[Klaus Dittrich]

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