ECO DELTA LOOP ANTENNA 40 METERS - Triband wire loop
The DELTA-40HP is a full-wave loop designed to operate on 40m (7 MHz), 15m (21 MHz), and 10m (28 MHz) without an ATU and other bands with an ATU.
There is a 4:1 balun at the feed point which allows it to be fed directly with a 50 ohm coaxial cable - RG-213 or Mini 8 are probably the best, but other 50 ohm coaxial cables can also be used.
The loop comes complete with three insulators to provide the anchor points. It can be mounted horizontally or vertically.
It can also be configured as a square (Quad) or an equilateral triangle (Delta).
DELTA configuration.
Configured as a delta loop or equilateral triangle, if arranged horizontally it will be good for short/medium distance contacts. If vertical, or close to vertical, it will provide low angle radiation excellent for long-range DX in the direction of the loop (looking straight out the front). In this configuration, it gains 3.2dBd.
FULL WAVE QUAD LOOP When placed horizontally, it is useful for NVIS, and gains 2.8dBd in the vertical direction.
Configured sloping at 45 degrees, it will provide low angle DX.
Technical Specifications:
Maximum power 500 W CW, 600 W PEP
Gain 3.2 dBd maxSWR
7.05 MHz 1.5:1
21.15 MHz 1.7:1
28.02 MHz 1.1:1
Total loop dimensions 40.56 m
Side dimension in delta: 13.52m
Side dimension in quad: 10.14m
Radiating wire: High strength anti-kink Polyflex
Feed Point Balun 4:1 HP
