QW Edginton 40 Meter Antenna
Model: "QW 40m Edginton Loop using Heliax Cap and gimmick trimmer"
View of the 40m Quarter Wave Loop:
The Heliax cap is the black object at a 45 deg angle with a white
'loop' hanging out of it.
Looking up at the loop from below:
Another view looking up at the loop from below:
The 10 inch fixed Heliax cap:
The trimmer used with the fixed Heliax cap to tune the whole 40m band:
Bottom of cap:
Variable mechanical cap tried earlier. Also note the ferrite
(wrapped in the blue tape).
Note how the plates of the cap are hardly meshed.
The Type 43 material ferrite transformer has 3 1/2 Turns on primary
(coax) side and 2 Turns on the secondary (antenna) side.
Sketch of dimensions: Total length of wire is 8' per side by 4
sides = 32 feet
BW Measurement and Q calculation:
WSPR spot result in Japan:
WSPR spot result on Russian island east of mainland Russia: