The Sigma Euro-Comm DELTA- 15 HP
Full Wave Loop Antenna Wire Antenna
The DELTA-15HP is a full wave loop designed to operate on 15m (21MHz), 12m (24MHz) and 6m (70MHz) without an ATU and other bands
(20m, 17m and 10m) with an ATU.
There is a 4:1 balun at the feedpoint enabling it to be fed directly with 50 ohm coax - RG-213 or Mini 8 is probably the best but other variations of coax may
be used so long as they are of a 50ohm impedance.
The loop comes complete with three insulators to provide anchor points. It may be mounted flat (horizontal) or raised to a vertical or near vertical position.
It may be configured as either a square loop (Quad) or equilateral triangle (Delta).
FULL WAVE DELTA LOOP. Configured as a delta loop or equilateral triangle, if laid flat will be good for near DX. If vertical, or near vertical
will provide low angle radiation which is good for long range DX in the direction of the loop (looking straight on at the front) and near DX off the sides. Gain 3.2dBd.
FULL WAVE QUAD LOOP If laid horizontally will be good for NVIS, if vertical 2.8dBd gain. Sloping at 45 degrees will provide low angle DX.
The power rating is for intermittent amateur (400W CW or 500W SSB) use and not for
AM broadcast or constant carrier data modes. For AM broadcast a much
higher power BALUN is required."
Delta Loop Specifications
Max Power 400W CW, 500W PEP
Forward Gain 3.2 dBd max
Dimensions of overall loop 13.60mThree equal sides 4.53m
Four equal sides 3.4m
Radiating wire Poly flex weave non kink
Feed Point Balun 4:1 HP