Esch
Sent: Sunday, October 20, 2013 9:35 AM
To: topband@contesting.com
Subject: Topband: impedance of 3/8 radiator and question on matching
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
... ok, with the help of DJ2YA I made some math ... Seems the 3/8 lambda
will be around 200 Ohms ...
- for 80m I will put abt. 80pF in Series to the antenna and feed the
vertical through a 4:1 balun
- to match it for 160m I will put abt. 29uH in Series and abt. 4uH to
ground to get a match to
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).
H
