On Wed, 29 Mar 2006 17:30:54 -0500, John Popelish
wrote:

Richard Clark wrote:
(snip)
#64 material is going to offer about 3 Ohms per bead;
#43 material is going to offer about 8 Ohms per bead;
#73 & 77 material is going to offer about 18 Ohms per bead;
#75 material is going to show offer 28 Ohms per bead.
(snip)

What dimension cores produce these impedances at 75 meters?

Hi John,

It is called a 101 sized bead:
.138" OD
.051" ID
.128" high

73's
Richard Clark, KB7QHC