[Elecraft] Re: KX1 Update: USB/LSB SWL RX modes, wider coverage

Wed Sep 17 13:58:00 2003

[email protected] wrote:

> For 40m, picking up the 49m band (5.95 to 6.2MHz) would be good.

The KX1 does an especially good job in this range if the KXB30 option is
installed--see my previous posting.

> Looking at the tuning ranges you have now listed, I would suggest some
> changes (if you haven't carved the tuning ranges in stone yet)....

Your suggestions are interesting, but when I tested ranges beyond what I already
mentioned I found that the sensititivy had dropped off so far as to no longer be
that useful. The KX1 has narrow band-pass filters on all three bands. With the
exception of the re-resonating effect of the 30-m filter to provide 49-meter
coverage, SWL segments are subject to decreasing sensitivity as you tune away
from the ham bands.

Tuning below 5 MHz is problematic for another reason: this is so close to the
I.F. (4913) that image rejection becomes much worse.

73,
Wayne

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