[Elecraft] Re: K1 and K2 receiver performance?

[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?...

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