[Xastir] Portable Digipeater Antenna?

[Ray Wells]

Jason Winningham wrote:

>
> On Jul 1, 2007, at 7:59 AM, Richard Polivka, N6NKO wrote:
>
>> I have just now created a vertical 1/2 wave dipole. I tune it with  
>> an MFJ box.
>
>
> A roll-up J-pole is slightly more complex to build (but not much!)  
> and doesn't need a tuner.  A J-pole has noticeably more gain than a  
> dipole, too.
>
> -Jason
> kg4wsv
>
Given that a J-pole is only a dipole with an alternative feed method 
(i.e. at the end rather than the centre), I have to wonder where this 
gain comes from.

Ray vk2tv