Nice close up photo of my new variable capacitor. It is sold by Chameleon Antennas as part of a DIY Magnetic Loop kit. I also found out recently that you can purchase it alone from them for just $80. But since the DIY kit is $99, you might as well also get the LMR-400 coax, two SO-239 and 4 PL-259 connectors. Here is the info for the Capacitor

1 X PRE-ASSEMBLED CAPACITOR
600 Vrms MAX
12.5 pF MIN - 432.5 pF MAX PER SECTION
2 SECTIONS TOTAL
6:1 DRIVE (3 TURNS MIN TO MAX) INSTALLED
TWO WIRES PRE-SOLDERED WITH TERMINALS
CAPACITOR INSTALLED ON A PRE-DRILLED MOUNTING PLATE
KNOB INSTALLED
1 X 12' LMR-400 4 X SILVER PLATED PL-259 2 X SO-239

Those capacitors are the same that are used in the CHA F-LOOP and the CHA P-LOOP from Chameleon Antenna. Photo taken on Sat, September 30, 2017

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