Z-817H Instructional Video Part 1

LDG Electronics Z-817H Instructional Video Part 1 How to install and use a Z-817H tuner with the FT-817 radio.
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Filling the sand in the reactor. SWR=1,6 initially. It first diminues down to 1.1 then stabilizes a moment and grows up to 1.2 when all is filled. So the antenna impedance modified to be best tuned (1.1) during the sand filling. CB transeiver was on channel 40 (for the best SWR with my system, with channel 1 SWR=2 and is bad)