BL-41W-2K-4:1 BALUN (200:50 Ohms) for OCF Dipole antennas
This Current type 4:1 (200:50 Ohms) BALUN is another product designed for OCF antennas (Off Center Fed) also known as Windom antenna. Dual double cores, total of four (4) 1.4 inch (38mm) wound with PTFE silver plated wire is the best CURRENT BALUN design used with unbalanced antennas.
Just add your wire and make yourself an OCF dipole antenna either with 33/67% or 20/80% wires ratio.
It covers 1-54 MHz with almost perfect VSWR terminated into 200 Ohms load, check out the VSWR curve at the gallery. Unlike other companies, we do not claim unrealistic power ratings. We are sure it will handle all you have up to a legal limit of 1500W in the US and even more. It is rated modestly to 2kW ICAS.
BALUN Enclosure is injection molding of PBT20-Polybutylene Terephthalate (PBT thermoplastic polymer) material filled with 20% glass fiber. This UV Resistant/Weatherable polymer offers impact strength, heat resistance (melting point 223 °C or 433 °F) as well it is excellent electrical insulator.
- Bifilar pair wound of Silver plated PTFE (Teflon) insulated wire on four 1.4″ (38mm) Ferrite cores for maximum Common Mode Impedance and bandwidth.
- SO-239 PTFE (Teflon) connector
- Stainless steel hardware and connecting studs.
- Ventilated high quality enclosure
*ICAS = Intermittent Commercial and Amateur Service[tx_divider size=”20″]