Jimmie wrote:
The plot of many individual yagis does confirm the general idea of gain
being roughly proportional to boom length, and that is a very important
thing to understand.
clip


There is no direct connection between boom length and gain. This is
because lengthing the boom also implies one has added elements and
possibly made adjustments to element spacing.

Sorry, I should have said that boom length is roughly proportional to
the *available* gain, if the whole length of the boom is populated with
elements in such a manner as to optimize the gain. That requirement is
usually taken as understood.


--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek