You can install this autotuner to mcHF SDR radio with RF PCB versions:

0.4, 0.5, 0.6, 0.6.1, 0.6.2, 0.6.3 and RS-918 clones

You need to install autotuner to mcHF SDR radio by yourself.

To install autotuner your need some solder works and drill one hole at RF PCB.

For control the autotuner, the E3 encoder in you mcHF SDR radio must be with a button.

Chinese cases are usually equipped with such encoders.

If you have an E3 encoder without a button, first replace it with an encoder of the same height with a button

(encoder not included in DIY KIT)

You need to buy either:

PEC11R-4215K-S0024 Shaft Type: Knurled or PEC11R-4215F-S0024 Shaft Type: D / Flatted

It depends which shaft type is on the other encoders in your radio.

Both of them are 21.5 mm high (from PCB to end of shaft) and all with a switch.