[TowerTalk] Split cores..from fair rite

[Jim Thomson]

Tnx to a tip, fair rite makes this huge snap on, pn Fair-Rite Part Number 2631181381

This thing has an ID of 1.394 inch..which is just a hair less than the 1.4 inch of normal type 31 cores.
However, this monster is 2.5 inchs tall... and the eq of 5 x normal toroids..which are only .5 inch tall.  
Dunno what it cost,  but it’s a quick fix for a lot of applications.   It has the same Z as 5 x normal toroids. 

Dunno if this works or not, but using fair rites data, they provide Z  for 1-3-5 turns....which turns out to be
1-9-25 times the  Z of just 1 turn.  That just proves the N2 theory.    Also if cores are stacked, the Z increases
by the number of cores.

IE: if 5 cores used, Z increases by 5 x.   If 5 turns are used,  Z increases by a factor of 25.    So total Z is now
5x25=125.... or 125 X the Z of just one turn through one core....at a given freq. 

When they say 1-3-5 turns etc,  I dunno if they mean plane insulated wire, close wound between turns, 
and also close wound over the outside of the toroid....or something else. 

Jim  VE7RF