[TowerTalk] 80m delta loop question

[Felipe Ceglia - PY1NB]

Hello gurus,

After reading the loop section on Low Band DXing, I decided to build a 
delta loop for 80m, mostly vertically oriented, and fed 1/4 lambda from 
apex. Planning to use ladder line, so I will be able to use it on CW and 
SSB portion (PY's are allowed to use only upt to 3.8mhz).

The author suggests using 450ohm ladder line for feeding it, but I could 
not find much details about it, so I ask:

Which antenna matching configuration should I use at the end of the 
ladder line to transform it to 50ohm?

Could I use other impedance on the ladder line, say 300ohm?  Is it critical?

Would I need a given lenght for the ladder line, or could I go random?

73 and thanks,

-- 
Felipe Ceglia - PY1NB
PR1T team member - Rio DX Group
http://www.dxwatch.com
http://skimmer.dxwatch.com
http://riodxgroup.dxwatch.com