How it works: The antenna is fed using 50 Ohm coax via a SO-239 socket at the base of the unit a 4:1 UNUN transformer is located in an IP65 weather sealed box at the bottom of the bracket section of the fibre glass elements. The antenna comes in four parts, three fibreglass poles and one stainless steel tapered whip. The transformer reduces the impedance at the feed point to a more acceptable level making the antenna much more efficient and allowing proper and easy tuning via an external ATU and automatic ATU’s found in most modern radios.
The antenna can be grounded if the user experiences excessive local static noise, but as the UNUN is DC grounded: grounding will not affect the tuning ratios.
Band With ATU
- 3.5 MHz 80m 1.1
- 5 MHz 60m 1.1
- 7 MHz 40m 1.1
- 10 MHz 30m 1.2
- 14 MHz 20m 1.1
- 18 MHz 17m 1.1
- 21 MHz 15m 1.1
- 24 MHz 12m 1.1
- 28 MHz 10m 1.1
- 29 MHz 10m 1.1
Specifications
- Type: End fed vertical
- Frequency:
...TX: 3.5 - 30 MHz
...RX: 1.8 - 55 MHz - Power handling: 1 kW PEP or CW & 200 watts max for data modes
- Impedance: 50 Ohms
- Connector: UHF-Female (SO-239)
- Length: 5.5 meters 18 feet
Packing Includes:
- 1 x Sigma HF360 XP Antenna
- 1 x Manual in english
