Hello to Kevin and the group:
I am putting together my 1480 VHF/UHF Dual Band 6/8 dB Collinear
Base Station Antenna. While checking the pigtail I made up for the
antenna, I discovered that I didn't have any measurable continuity
between the center conductor inside the radome to the center of the
S0239, however I have 0 ohms between the center element in the
radome to the outside of the S0239, i.e. ground. There is a matching
coil in the area of the radials. I am presuming that the center of
the S0239 is probably connected to the center element through a
capacitive coupling. For clarity, I brought out the second antenna
and checked it without the pigtail and get the same readings. I am
sure the antenna is OK, but would like to understand how the center
of the antenna is coupled to the center of the S0239. The larger
9/11 dB version I bought at Dayton does not have any measurable
continuity between the center and ground, so I presume it is the
same design, just larger in size for gain. This is a great antenna!
Any information on how these Repeater Builder 1480 Antenna work,
would solve my curiosity.
73 JIM KA2AJH Wellsville, N.Y.
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