[Elecraft] BL-1 and BL1-1 Balun Questions

[David F. Reed]

Greetings folks;

I started building the balun kit, and I am suffering a bit of confusion, 
that I hope to get some help straightening out here.

   1. In my ignorance, I cannot tell whether I am building a 4:1 or 1:1
      balun; though the included instruction sheets are almost the same
      (the BL1 refers to a Binocular Balun core - I assume the ferrite
      core with parallel holes, the BL1-1 does not in the parts lists,
      both refer to winding the balun.  They both refer to winding three
      turns around the balun core.

      So, ignoring the question of what I ordered for a minute, how do I
      tell which I am building?

   2. There seems to be no way to get three turns around the core with
      the wire length provided; the instructions show what appears as
      the wires starting on one side of the core, through, around so on,
      so that you end up with 3 windings visible around the outside edge
      of the core, starting at one side and finishing at the other.

      I seem to be only able to get 2 turns, leaving 1" on one side, and
      about 2" at the other, with the windings pressed fairly tightly to
      the core.

      If I take the prescribed 10" length, subtract the 1" off both
      ends, I am left with 8" with which to get the 3 turns, the
      circumference of which calculates for me to be 3*3" or 9"...  (I
      am assuming each turn takes 1" through, about .5" to make the
      turn, another 1" around, and another .5" to make the turn to go
      in, making 3" per turn) -.5" because the last winding need not
      turn and another .5" because the first "through need not turn
      either,  so 9" - 1", = 8", the remaining length, so it would seem
      to be in theory possible.

But in practice, I am failing to be able to perform this feat.  I am 
hoping there is some simple if you know it trick to get me rolling again.

Thanks in advance!

--Dave

-- 
David F. Reed  - W5SV -     cell: 512 585-1057