Yesterday i found some time to try to improve the new 4 square for 3,5 Mhz.
Like i wrote ealier, the feedpoints are 2 m from ground, and today i brought the radials higher up in the air
( 4 m high now, gull wing system).
The impedance at each element dropped from circa 46- 48 Ohm too circa 38 - 39 ohm, so less losses to ground,
( a vertical should have 36 Ohm in theory) so the efficiency of the array is improved.
I noticed a bigger front to back now , specialy to close by signals ( 0 - 400 km),this is what to expect with just one radial for each radiator.
Keep you posted.