N4LQ wrote:
Is sensitivity very low below about 1000khz in the BC band or is it
just me?
It really drops off there and I can only pick up a couple of really
strong
stations below that. I did install the KBF3. Does that attenuate the BC
band?
I did make sure the ATU was in bypass.
Steve Ellington
[EMAIL PROTECTED]
Hi Steve,
All PIN diodes, including those used in the K3's T-R switch, are
susceptible to increasing intermodulation as the applied signal
frequency decreases. We selected diodes that perform very well at low
frequencies, but as a precaution, we designed the T-R switch to have a
high-pass response below 1 MHz. At 500 kHz, the roll-off is around 15
to 20 dB. At 1.5 MHz, the roll-off is only a dB or so. We feel that
this is a good tradeoff.
There's a note about this in the Owner's Manual (in Rev. C, it's on the
right side of page 36). But I'll also add this to the Specifications
page.
73,
Wayne
N6KR
---
http://www.elecraft.com
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