K1 and K2 receiver performance?

[Darwin, Keith]

I know the K2 delivers contest-grade receive performance.  That is one
of the main reasons I want one so badly :-)  But what about the K1?

How does the K1 compare to the K2 as far as receive performance is
concerned?

For that matter, how does the K1 compare to other HF rigs such as my
TS-830s?

- Keith, KD1E -

P.s.  I've tried to send this 3 or 4 times and it keeps bouncing with a
"mailbox full" message, yet I can send other messages just fine.  I'm
stumped.
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[wayne burdick]

Hi Keith,

The K1 and KX1 are both designed for portability and very low current
drain. Like many other QRP transceivers, they use a low-current active
mixer in the front end rather than a diode mixer.

Due to the low-power mixer, the K1's receiver sensitivity is excellent
but its dynamic range is not as large as the K2's (or TS-830's). Most
of the time you won't notice the difference. The exception would be if
you had a KW neighbor operating on the same band you are, or if you
live near a very high-power broadcast station whose signal gets through
the band-pass filters. (The K1 has very narrow ham-band filters,
reducing the likelihood of such interference.) The K1 includes a
switchable attenuator that you can turn on if a very strong signal does
appear.

Unless you encounter one of these situations, you'll find the K1 very
competent in contest situations. It includes a 4-pole
variable-bandwidth crystal filter to help reduce adjacent-signal QRM.

73,
Wayne
N6KR

On Oct 20, 2005, at 11:32 AM, Darwin, Keith wrote:

> I know the K2 delivers contest-grade receive performance.  That is one
> of the main reasons I want one so badly :-)  But what about the K1?...

---

http://www.elecraft.com

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