[Elecraft] K2 T4 winding ratio

[Don Wilhelm]

  Hi and sorry about the bandwidth.

I recall receiving a query about the T4 alternate winding ratio within 
the past week, but cannot locate the email to respond properly.

The normal winding ratio for T4 is to be used.  It must NOT be used if 
the KSB2 option is installed.

In other words, it can only be used with a CW only, QRP only (at 5 watts 
or less) type K2.

While the alternate QRP winding of T4 may produce greater efficiency at 
the 5 watt level, if used at levels above 5 watts, the efficiency is 
actually reduced.

In other words, I do not recommend that the alternate ratio for T4 be 
installed on any K2.  I have seen several that have this modification 
that have been sold, and the buyer adds the KSB2, then wonders why the 
K2 "acts funny in transmit" when used for SSB.

If the original person asking this question has any more questions, 
please contact me off-list.

73,
Don W3FPR