Topband: impedance of 3/8 radiator and question on matching

[Carsten Esch]

Hi,

I am playing with a 3/8 radiator for 80m (to the time being fed against 
40 radials of each 40m length).
What is the impedance I should expect from a 3/8 radiator?

My plan was to use it as a 3/8 on 80m and match it for you on 160m too 
(until we will put a Gamma match on our 60m tower).

Here is what I measured with my AIM today:
https://www.dropbox.com/s/48sp1703lnaiyu1/3%3A8_Test.bmp

(and here the actual *.SCN file):
https://www.dropbox.com/s/ql17wcsk2rpqj1o/3%3A8_Test.scn

Any advise on matching would be welcome ;-)

Thanks!

Carsten, DL6LAU