Be aware that those type of switched-element tuners subject the transmitter to massive mismatches during switching and finding a tuning solution.? I use one but I use a QRP-O-Meter absorptive bridge between my radio and tuner;? its loss protects the TX during tuning and is then switched out.? A 6dB pad would work, too.
73, Don N2VGU?
Donald S Brant Jr