2el end-fire beverage array

2el End-Fire beverage antenna array

The beverage is a long wire antenna installed very close to the ground. The antenna should be longer than 1 wavelength and installed at a height of less than 0,05 wavelength above ground. The beverage is usually terminated in a resistance at the end (opposite the feedpoint). Beverage antennas provide one of the least expensive and most reliable ways to improve DX capabilities on the low frequencies. If you are after improved directivity in the rear of the antenna (improving the DMF), you can put up two Beverages fed as an end-fire phased array. The Beverages you wish to phase together need to be identical (same height and length). In an end-fire Beverage array it is important that the two elements have a similar F/B, as you are going to subtract the signals from both elements. You only get zero if you subtract two identical numbers. It does not matter what the numbers are though. Two Beverages with a 10-dB F/B can produce 30 to 40-dB nulls in an array, just as much as a pair where the individual elements already show 25 dB F/B. (ON4UN)

Description:

This is 2 element beverage antenna array. In this End-Fire array the beverage antennas are very close to each other. Usually 2 to 6 meters. One beverage is shifted to front by the stagger distance. This array needs smaller room compare to broadside one. Big advantage is in higher F/B.

Main functions:

Info:
- Broadband: 0.1 MHz to 30 MHz
- In right configuration works 160 to 40m More examples in WiKi
- Gain around + 2.5 dB compare to single wire beverage
- Great F/B compare to single wire beverage
- Can null some direction by PH line calculation
- Very low noise
- 50/75 ohm impedance - easy jumper switch
- Antenna construction with wires in the air or BOG
2 x single wire beverage (feeders + terminators) + 2-way splitter
One single wire beverage with 180 deg phase shift in feeder
Electrostatic protection with glim lamps.
High power protection.
Stainless screws.
Quality PTFE SO-239 or F connector, N or BNC on request.
IP56 box. Recommended to protect it against rain and snow.
Size 10x10 cm (feeder and 2-way splitter), 5x6 cm (terminator).
Available as
- KIT : all parts + PCBs + boxes
- Assembled : ready to use
- PCBs

Parameters:

Gain around + 2.5 dB compare to the single wire beverage
More examples in WiKi
Impedance 50 or 75 Ohm by internal JUMPERs
Splitter with 0 deg
Flat SWR when right terminated
Protections maximal current continues 100 mA
Protections maximal voltage around 65 V

Use:

Very low noise low band RX antenna
Improvement in F/B
Higher gain
Nulls in the calculated direction.

Versions:

Classic air beverages or BOG (beverages on the ground)
KIT or assembled
Connectors: SO-239 or F, N or BNC on request

Examples and comparations

Comparation of 180m long Single wire beverage and 2el End-Fire

Comparation of 180m long Single wire beverage and 2el End-Fire and Broadside array 2x2el

Comparation of 180m long Single wire beverage and 2el End-Fire on 80m band

Comparation of 160m long Single wire beverage and 2el End-Fire on 160m band

180m long Single wire vs. End-Fire

180m long Single wire vs. Broadside

180m long Broadside vs. End-Fire

180m long Broadside 40m spacing

180m long End-Fire array

4el End-Fire array in Broadside config

Video by VE6WZ

Option - Common-mode current choke to hamshack:

Link to CMCC

CMCC	CMCC 1 to 3 port

Download

2-way splitter
Schematic and board pic	sch	brd
Source files		KiCAD258
Beverage
beverage feeder	sch	brd
Beverage terminator	sch	brd
Source files		eagle671

We believe open source is a better way of doing things. View and download the Shield Schematic and PCB files. The hardware designs are released under the Attribution-NonCommercial 2.0 Generic

Users photos

DL8LAS Andree