The BFS-1 is a single-wire Beverage Feed System. This
W8JI design is immune to
strong signal overload and core saturation common in multi-transmitter
contesting environments, and is used by winning contest stations and low-band
DXers. The unit uses an isolated-winding, matching transformer system to
significantly increase the signal-to-noise ratio in Beverage and other high
impedance antennas.
The BFS-1 will work with antenna impedances from 400-500 Ω. The
termination resistor included with the BFS-1 is a 470 Ω, 2-Watt
non-inductive resistor that withstands nearby lightning strikes significantly
better than hard to find carbon composition resistors.
Feedline impedance on the BFS-1 is designed for 75 Ω, although it will
work with 50 Ω coax. The BFS-1 uses an industry standard CATV “F”
connector.
Features:
- 100 kHz to 30 MHz operating range
- Spark gaps minimize damage from lightning
- Wing nut terminals eliminate soldering
- Rugged aluminum housing and stainless steel hardware
- Flange-mount holes for easy mounting
- Ground isolated secondary can be connected with normal or reverse phase