[Elecraft] kpa1500?

[Wes (N7WS)]

I just used a step attenuator to do a crude check on my K3.  Throwing in a few dB to "match" the 160-meter dipole on the BC band, and tuning in an S9+40 dB signal, switching in 40 dB attenuation in two 20 dB steps shows, within reading accuracy S9+20 and S9 respectively.

Using my XG2 on 20-meters with full output at S9 (cal point) adding 6 dB attenuation at a time shows one S-unit steps down to about S4 or so.

Wes  N7WS

On Sat, Dec 13, 2014 at 1:20 AM, Jim Brown<jim at audiosystemsgroup.com>
wrote:

Several comments. First, while the "official" definition of an S-unit is
6dB, one S-unit on most receivers is more like 3-4 dB. While I haven't done
a linearity test on the K3 S-meter, I suspect it's a bit better.