[Elecraft] 2-Port Network Model for BL-2 Balun (both 4:1 and 1:1) ?

[Phil Hystad]

Does anyone have, or has done the measurements to create, a 2-port network model of the BL-2 Balun?

I would prefer parameters for both 4:1 and 1:1 if they exist.  I presume these might be h-parameter models due to transformer within the balun but I prefer parameters that include any Complex representation that might include phase shift or transformation of complex impedance.

Thanks,
phil, K7PEH