Davey,
I used #24 for a T37 core for up to 25 turns (~1.8uH).? MRCC has that feature...8^)
Although I think it overstates the wire size.? For a T50, #22 works OK.
Even if you have only a few turns, #22 is a little stiff for the small core
and hard(er) to mash it tight to the core for best coupling.
In a pinch, calculate the core inside circumference. Measure the wire dia.
then figure the number of times it will fit.? TIC, of course...
I'll have to check the info from Diz, Like you, I think of seen that someplace.
Just don't recall where.
