Modified VK5JST Antenna Tuner
The first one worked fine, but as others have commented, I didn't find the tuning rate convenient, nor the fine tuning.
I decided I only wanted to cover up to 10m, so changed the bands to only 3, with less redundant overlap.
It now has the following ranges:-
Low 1.54MHz to 5.01MHz
Med 3.63MHz to 11.75MHz
Hi 10.67MHz to 35.23MHz
Range selection is by a three way toggle switch, with LEDs to indicate the selected range.
Tuning is via a 10 turn pot, there is no need for fine tuning.
Front panel assembly. The inductors are mounted on a small piece of double sided board soldered onto the switch. The screw near the pot is an extra support for the PC board
The board was modified with a cut-out to clear the pot. The extra mounting screw fixes into the new hole at about 10 o'clock from the big hole. Notice the piggyback regulator for the tuning circuit.
I decided that the turns counting knob wasn't useful, and replaced it with a larger plain knob.
Now, just to make a front panel sticker to cover all the screws!