Continuing the discussion from Ultralight SWR indicator? (Part 1) - #100 by HB9EBE.
Previous discussions:
If you don’t already know, Ara, N6ARA, has been offering MiniSWR indicators for the bands 80-20m and 20-10m (as a kit and assembled) in his small online shop for some time now.
Ara’s circuit is based on the well-known and proven TinySWR indicator from Martin, DK3IT.
Ara uses the slightly larger toroidal core FT-37-43 for the transformer (also visible without a magnifying glass, hi) with different secondary windings for the ranges 80-20m and 20-10m, which is why there are 2 different MiniSWR indicators.
Assembling the kit version only includes winding and soldering in the transformer toroidal core and soldering on the BNC plug/socket.
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