An antenna tuner is overkill, in my opinion. These work well enough without.

I think one of the conversion manuals had a short article on changing input

to low-Z antenna match ? If i recall, their way was to use a fixed capacitor

to ground, and the antenna input was to it instead of high end of tuned

circuit. Actually, to me anyway, the high impedance input as used in this and

the ARR-15 receivers works surprisingly well, something i wouldn’t have

predicted just looking at the schematic.

-Hue Miller