Ian White GM3SEK wrote:
Apology accepted. What you had missed was the statement immediately
above the table, that:
(the 8t 1 layer choke has two very small minima).
Therefore that choke has two lines of data.

I apologize. I jumped to conclusions. The obvious typo
wasn't so obvious after all

The bunched choke is the one that has a Fmax/Fmin frequency ratio of 6.
A certain amount of mental gymnastics allowed you to claim that 1.5, 2.1
and 2.7 are all approximately equal to 2... so how about 6?

As I already stated: What I have said applies to well-
designed coils that can be modeled as transmission lines.
That includes properly wound chokes and bugcatcher loading
coils. A bunched choke is known not to be well-designed.
Quoting WA2SRQ again: "Don't bunch the turns together. Wind
them as a single layer on a form. Bunching the turns kills
the choking effect at higher frequencies."

Bunching also tends to kill the transmission line effects.

How many 75m bugcatcher loading coils have you wound
in bunched mode? :-)
--
73, Cecil http://www.w5dxp.com