Turn on the power of the rig, bias tee, etc. and check if matching can be achieved in each band. As a result, matching was achieved from 7Mhz to 50Mhz. Unfortunately 3.5Mhz seems impossible.
Even if 50Mhz is small, the dedicated single delta loop is more sensitive, so I raised both antennas to the mast. fig.111

D-Loop+ATU013-01

fig.111
Multiband delta loop for HF and delta loop for 50Mhz


The ATU containment box is oriented sideways to reduce the effects of wind and to make it easier to remove the ATU containment box when the mast is lowered.

After using it for a while, I wanted to increase the gain of the delta loop for 50Mhz as much as possible, so I switched to the Del-Mondo antenna. fig112


D-Loop+Del-mondE002-01

fig.112

Until now, the arm part that tilts the radiator of the Del-Mondo antenna forward used an 8mmΦ glass fiber pole. This time, the L angle of aluminum was changed to a triangular one to improve the strength.

The upper part of the reflector element of the Del-Mondo antenna is quite close to the upper element of the HF delta loop, and in rare cases it may come into contact with the wind, but I feel the change in SWR probably because the upper element of the HF delta loop is a covered wire. I can't.