M0PLK Delta Loop

Contents:

1. VPA System's Multiband Delta Antenna
2. Delta Loop Antenna Radiation Patterns
3. References
4. Construction of a Delta Loop
5. Purchase Site

WARNING! Before connecting to the transceiver, remember that the antenna is not it is resonant and works in all bands with a high SWR (about 2.5-3.5). You will need to adjust with the help of the transmission external or internal built into the transceiver antenna tuner.

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VPA System's Multiband Delta Antenna

Closed loop antennas are always less sensitive to noise than open driven element antennas (e.g. vertical or dipole). This Multiband Delta Loop antenna, designed by M0PLK, has a unique configuration and feed solution resulting in low angle radiation, thus making it a great performer on real DX.

Features:

• From 20.11.2012 new improved Balun,
• Better isolation,
• water proofing and efficiency.
• Performs well on 30-20-15-12-10m.
• Power ratio: 300W
• Usable on lower and higher bands with reduced performance.
• Low radiation angle due to novel top-feed system using low loss ladder line.
• Specially adapted for portable operation by M0PLK,
• Based on the SP3PL Multibander 7PL antenna
• Bi-directional and very low noise in comparison to a vertical.
• Design is non-resonant so an ATU is required.
• Comes complete with ladder line, main loop wire, aluminium telescopic rods, matching transformer .
• No guying system and assembly instruction (very simple and partly pre-assembled) is included.
• Wire elements made from DX-Wire wires. Ladder DX-Wire type F
  Lopp. Upper wire DX-Wire HDL. Wires with PE cover. UV resistant.

Delta Loop Antenna Radiation Patterns

References

Construction of a Delta Loop

Purchase Site