[Elecraft] K4 model v. K3S for strong nearby signal rejection.

[john at kk9a.com]

I use most of my K3S roofing filter slots, many slots are in the K4HD?  
  I'm sorry to see that the K3S will become silent key, it has been a  
perfect radio for my portable and home contest operations.

John KK9A


Petr, OK1RP/M0SIS wrote:

Dear Eric,

there is no reason to expect far better results from K4HD compare to K3S as
it is quite similar FE design in that matter.
K4HD has just superhet module w/xtals roofing filters added to standard
direct sampling K4/K4D radio.
K3S has more filters slots available...

So the results should be adequate as Wayne and Eric several times expressed
already.

2c,

Petr