Cushcraft HV4E Vertical Antenna
Version 0 11 2024 Cushcraft
Base Mounting
The base mount is designed to clamp to a pipe of 1” to 1-1/2” OD.
A galvanized water pipe 1” nominal (OD of 1.335”) is ideal for
mounting the antenna base. The exact way of mounting the pipe
is up to you but it is suggested that a 4 ft piece of 1” galvanized
pipe is driven 2-3 ft deep vertically into the ground. Clamp the
base plate to the galvanized pipe with the U-Bolts on the side
opposite to the fiberglass tube.
Slide the assembled antenna and the 1.25” hose clamp (20) onto the
fiberglass tube. Place the wire from the coax connector under the hose
clamp between the clamp and the antenna mast. Raise the antenna mast
up so it is about 1 inch above the mounting base plate then tighten the
hose clamp to hold the antenna and wire in place on the base. Make sure
the wire or the mast section does not touch the base plate.
RF GROUNDING
The antenna requires multiple ground radials to properly operate. A single ground rod or the ground
mounting pipe is not adequate and the antenna will not tune up. The MFJ-1932 or GKR-6160 ground
radial kits will work adequately with this antenna. Attach one end of the ground radials to the base plate
ground holes using 6-32 or 8-32 screws and nuts. Spread the radials out just under the ground. For more
information on antenna ground systems see references such as the ARRL Antenna Book and many
internet sources. Do not place the radials where people can trip on them or lawnmowers can catch them
on the blade.
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