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4.
Use the mounting bracket from the screwdriver
manufacturer to attach the antenna to the pipe.
5.
Attach the coax to the radial plate by using the optional
DXE-363-SST
Bulkhead Fitting. Run a short section of
coaxial cable to the bottom of the antenna feedpoint
from the Radial Plate. Additional size rods are available,
including 48-inch and 72-inch long rods for use on the
160 meter band.
Tarheel Screwdriver Antennas
with DX Engineering Hot Rodz®
Optional Items
DXE-MM-1 - Transformer Dual Impedance
The MM-1 is a dual ratio UN-UN (unbalanced to unbalanced transformer). Great for coupling your
50Ω coax to an antenna with a feed point impedance of either 25 or 12.5Ω, typically found in a mobile
environment. Ideal for antennas that have been enhanced with a Hot Rodz® Capacity Hat. Unit is
housed in an aluminum enclosure and uses PTFE SO-239 connectors.
MM-1 Power handling capability depends on the match:
Using the 25Ω to 50Ω port, with SWR below 2:1 on the 50Ω side, 750 watts PEP
Using the 12.5Ω to 50Ω port, with SWR below 2:1 on the 50Ω side, 500 watts PEP
