RG8X is OK for the individual phasing lines. Each handles 1/2 of your
power output. Do you plan to switch directivity 90 deg. by connecting
the verticals either in phhase or 180 deg out of phase? Its easy to do
as shown in the ARRL ant book. When the two feed lines are connected
together, the termination on your feed line to the xmtr will be lower
than 50 ohms. Some circuits for changing directivity use an L matching
network at the paralleling point to get 50 ohm feed Z. 73, Dan, N5AR
zeitler@ibm.net wrote:
>
> When phasing a pair of verticals a 1/2 wave apart and forcing equal currents
> by using two 3/4 wave 50 ohm coaxes to a T connector does it matter if RG8X
> for the 3/4 wave portions is used if the freq is 20 meters or is their too
> much loss, even on 20? I have Rg-214 but the 8X is so much easier to use.
>
> Lane
> Ku7i
>
> --
> FAQ on WWW: http://www.contesting.com/towertalkfaq.html
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|