[Elecraft] K3 & S9 43' Vertical

NZ0T nz0tham at gmail.com
Tue Mar 22 11:41:40 EDT 2011


I have an S9 43' vertical.  You will need the unun to match 60 meters and up. 
The 80M coil works well too.  I ended up building the matchbox that Phil
AD5X designed.  You can see his article here:

http://www.ad5x.com/images/Articles/Match160.pdf

Phil also has a nice presentation on the 43' antenna here:

http://www.ad5x.com/images/Presentations/Vertical43.pdf

It's a great antenna if matched properly.  It must be matched at the base
with a remote tuner, an unun, or coil to work properly.  The unun (on 60M
and up) keeps the SWR down to manageable levels that you can match with a
tuner in the shack with acceptable coax losses.  The SWR gets out of hand
below 60M and must be matched at the base.

73 Bill nz0t


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