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BevFlex-4X Installation Manual Rev 2.23 November 2019
6. At the far end of the antenna, install the other
Termination Unit
from the kit the same way as in instructions #2 and #3
above.
7. The feed point for the BevFlex-4X can be located at any point along the entire length of the coaxial cable antenna element.
If you are feeding it from either end, simply connect the feed box from the kit directly to the end box with a short RG-6 coaxial
jumper or an “F” male to male barrel adapter. Locate the feed point at the position most convenient to your receiver
location. The entire length of the coax run is always used as the antenna regardless of where the Feed Unit is placed.
8. Install two RG-6 coaxial cables from the Feed Unit supplied with the kit to your receiver location. You can use two
independent runs of RG-
6 coaxial cable or the “Siamese twin” type dual RG-6 coaxial cable. The length and matching of the
length on these feedlines are not critical. The Feed Unit provides both common mode RF and DC / Ohmic isolation of the
feedlines from the antenna. It is recommended that the shields of the two feedlines be connected to the station ground at the
entrance to the ham shack to provide static discharge and lightning protection. This can be easily accomplished using a
standard CATV, dual, grounding block like the one shown in Figure-6. Winding each coax through separate ferrite toroids will
help reduce any common mode noise picked up by the feed lines.
Figure-6 F Connector Grounding Block
9. NOW IS A GOOD TIME TO INSPECT AND WEATHERPROOF ALL OUTDOOR CONNECTIONS!
Silicon rubber type
fusion tape is recommended for a good weather tight seal that is easily removable for future repairs. The application of
silicon grease to the threads on the “F” connectors also helps to keep the connections weatherproof and free of corrosion.
All connections to the outdoor BevFlex-4X Terminator and Feed Units must have drip loops installed, or the wire or RG-6
coax must orient towards the ground. This prevents water from accumulating at the connection point and possibly entering
the enclosures. Figure-7 shows proper wire and coax routing.
