We should use the shortest possible connections to minimize ground parasitic capacitance and parasitic inductance and inductive coupling between wires, meanwhile me:

What exactly is in the photo, apart from the tangle of cables?
Well, there is a pi filter with a 9.06 mH coil with switchable sections and a double tuning capacitor, as well as electric extension coil at the output.

I will probably add a panel-mounted microammeter for measuring SWR in the future.