HyEndFed 3 Band 400 Watt AL Platte

HyEndFed 3 band for 40, 20 and 10 meter.
Max. Power : 400 WATT PEP SSB, 75 WATT DIGITAL.
Length : 11.85 meter.
Enclosure : Polycarbonate IP67, 100% UV resistant.
SO239 Connector Teflon.
All hardware Stainless steel.

By shortening the piece of wire at the far end.
Can you tune the 40 meter band to your favorite frequency.

These VSWR measurements were taken in the open field at a height of 5 meters horizontally.

We use 2.1 meter of coax to a line isolator.
From the line isolator to the analyzer we used 10 meters of coax Ecoflex 10, with very little loss.

Coax loss Ecoflex 10 :

5 MHz 0,8 dB/100m

10 MHz 1,2 dB/100m

50 MHz 2,8 dB/100m

The antenna network box was positioned 6 meter above the ground.
The length of the antenna wire to the matching network is 23 meters and connected to an 6 meter mast.

The antenna was not grounded.

Used VSWR meter : RigExpert AA-600