[Elecraft] Re: roofing filters - when to use them

[Bill Tippett]

I wrote:
 >A -42 dBm signal is equivalent to S9+29 dB
using the same definition as above.

         Oops...too early.  -42 dBm is equivalent
to S9+31 dB not S9+29 dB.  Not significant but
I don't like to leave mistakes uncorrected!
Another check is S9+76 (for BDR issues) minus
S9+29 (for IMD issues) equals 45 dB difference,
which equals the difference in typical BDR of
130 dB versus typical IMD of 85 dB.  Q.E.D. as
my geometry teacher would say!

                                 73,  Bill  W4ZV