I've been a ham since before the solar peak of cycle 20, more than 50 years 
ago.  I used a K1 with its simple SA612 front end during the peak activity for 
cycle 23 and 24.  The problem that you have conjured is non-existent for 
practical proposes.  There is nothing but joy to be had with any QRP rig in 
times of good solar activity.  (I also used K1SWL's DSW-20, -30, -40 and MFJ 
Cubs for 40, 20, and 15 meters...all rigs with very simple front ends.  I 
experienced no problems  either.

FWIW, cycle 21 (peak November 1979) was my favorite.

Mike / KK5F

-----Original Message-----
>From: Douglas Hagerman via Elecraft <elecraft@mailman.qth.net>
>Sent: Nov 25, 2020 5:52 PM
>
>If, by some miracle, the sunspot count were to eventually jump up to a really 
>high level, as was the case in around 2002, or even better in 1959, how would 
>the various Elecraft receivers work? I’m specifically interested in the K1 and 
>K2, but in general, is there a realistic problem with overloading of the front 
>end? Or, assuming that you can hear signals from all over, will the 
>selectivity, etc., be sufficient?
>
>Doug, W0UHU.
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