END FED 4B short mk1

Product detailed description

Wire HF antenna with radiator fed at the end.
The antenna is fed by a 50 ohm coaxial cable.

mk1 version - mechanical version for suspension mounting

The radiator is single, end-fed and electrically designed in ½ lambda length or multiples thereof.
It connects to the transformer circuit.
The usable bands are according to the selected emitter.
4B short - 7-14-21-28 MHz - emitter length 12,5 m, includes coil
4B - 7-14-21-28 MHz - emitter length 20 m, does not include coil
5B short - 3,5-7-14-21-28 MHz - emitter length 24 m, includes coil
5B - 3,5-7-14-21-28 MHz - emitter length 42 m, does not include coil

Specifications:
- 7-28 MHz bands
- emitter length 12,5 m
- coil included
- antenna cable according to the selected variant
- transformer element END FED
- compensation capacity 100 pF / 10 kV
- power load 300 W PEP max (on digi, FT8 etc. max 100 W)
- weight 1 kg
- mounting is for hanging
- PL connector (UHF)
- stainless steel fasteners

The antenna should be supplemented with a Link Insulator, connected as close as possible to the antenna.
This will avoid shell currents and interference (RFI).

Depending on the specific mounting design, the use of an antenna tuner on some bands should be considered. The quality of the ground, surrounding objects and environment, the height of the ends of the radiator, the shape of the radiator extension (horizontal, angled, cranked, etc.) have an influence.
Optimal mounting conditions are: horizontal at 10m height, power supply with a coaxial cable of the length of the impedance repeater to the lowest band used. Impedance repeater = ½ lambda x truncation factor (for the specific cable used)