[Elecraft] All Possible Elecraft ATU Tuning Combinations - Typo and Note

[Mike Morrow]

I wrote:

> IMO, a better illustration of the tuning flexibility for the various
> Elecraft tuners is gained by computing all possible legal *combinations*
> of the relays that are used to switch the reactances.  Almost all of
> the resulting component configurations make sense, with only the relay(s)
> connecting a capacitor group being superfluous if all the inductors are
> shorted or if all the capacitors in the group are open.  So minus these
> very few cases, the different combinations are obtained by raising 2 to
> the power of the number of switching relays.  Results:
>
> ATU        Switching Relays   Possible Tuning Combinations
> KXAT1             7                      128
> KAT1             10                     1024 <--CORRECT TYPO!
> T1               15                    32768
> KAT2             16                    65536
> KAT3             17                   131072
> KXAT3         (Said to be the same as the KAT3)

Also, it has been suggested that I should note that the values of the
switched reactances in all Elecraft tuners are powers of two from one
to the other (as close as commonly available parts values and accuracy
of toroid winding allow).  That prevents *multiple* combinations of relay
positioning from creating the *same* effective value of inductance or
capacitance.

Mike / KK5F