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Connect coax shield to any
convenient point on the
radial plate
b. If you are using the S9v as a multi-band antenna (20 – 6 meters) position
the Balun Designs
S9v vertical element wire ring terminal connector to the 4:1 unun stud
marked Vertical.
Next, solder two ring terminal connectors to a short piece of radial wire or
copper braid (shown) and connect the 4:1 unun Radials stud to the
nearest hole on the radial plate.
PL-259 male connector to the Balun Designs SO-239 female connector.
c. You can use electrical tape or zip ties to secure the vertical element wire
below the base tube exit hole. If there is any slack in the vertical element
wire, it needs to be left ABOVE the electrical tape or ties. This way, there
will be some slack wire available to move with the fiberglass sections in
the event of very strong wind.
d. COMPLETELY weatherproof the vertical element wire connection and all
coax feed line and unun connections using the sealant of your choice such
as coax seal, silicon RTV, etc.
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Connect coax
center to S9v
vertical element
wire
TM
4:1 unun at the base of the S9v and connect the
S9v 18' M k II Installation Guide
Wrap electrical
tape around coax
center lead to
secure it to the
base tube
Finally, connect your coax feed line
20
Coax to 1:1
choke balun
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