For measuring larger components below 60 MHz I use a couple of other jigs which work quite well. The first one is built with off-the-shelf cables and a BNC to banana jack adapter. I built a version in a box without the bulky adapter that works slightly better and is easier to use. The cal loads were built from double-sided scrap PCB, copper foil and a 49.9 ohm SMD resistor.
Photos attached
Roger
Roger Need
