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Vertical Element Feedlines
From the DVA Phasing Relay Unit to each antenna element, use good quality
75 Ω coaxial cable cut the proper electrical length for the center frequency
being used. The two feedlines from the
DXE-DVA
Phasing Relay Unit to the
two vertical elements
must all be the same electrical length, velocity factor
and type
. Note the orientation and numbering of the elements. Be sure the
appropriate antenna element is connected to the proper
ANT
connector on the
DVA Phasing Relay Unit. Additional weatherproofing protection can be
provided when using weatherproofing tapes available from DX Engineering.
Lightning Protection
The key to lightning survival is to properly ground feedlines and equipment and to maintain the
integrity of shield connections. Use lightning surge protectors for the coax feedline and control lines
for the array feedline at the station end ground. A proper installation improves lightning protection
and enhances weak signal receiving performance. Consult lightning protection and station
grounding information in the ARRL handbooks, or by referring to the NEC (National Electric
Code). The DX Engineering website has technical and product information listed under “
Lightning
Protection and Grounding
” on the DX Engineering web site.
