4-way Bi-dir beverage antenna system with remote control input

4-way beverage RX antenna system with remote control input

This antenna consists of 2 x Bi-dir beverage sets, 4-way antenna switch and controller. That all allows you to have 4 directions beverage antenna system with only one coax line from field to the controller. Controller have got Bias Tee (AC/DC), HPF (kill AC noise), internal PCB with 3 BPFs, preamp and protections. There is also RX/TX RF switch for TRX which does not have input for RX antenna. More in manual.

Main functions:

Low noise RX antenna system

Broadband 0,1 to 30 MHz

4 directions beverage/K9AY

Small room for K9AY, larger for beverages

50/75 Ohm feed line tolerants

Built-in Bias Tee AC/DC

PREAMP with variable gain 0 to 18 dB

Three switchable BPFs or BYPASS

RX protections and limiters in controller

RX source switch for TX and RX antenna

Possible REMOTE control

Controller

Universal box for K9AY or 4-way Bi-Dir beverage system Front panel
4-way beverage system can have 4 construction positions in the field Manual
Four direction switch
Including Bias tee AC/DC for RX antenna
HPF > 100 kHz as AC noise eliminator (80 dB at 20 kHz)
Front End protections
RF power limiters in RX line
LED Indicator LOCAL / REMOTE Picture
LED direction indicator 0 or 45 deg. Picture
Three BPFs and Bypass - 4 positions switch on the front panel.
Internal PCB with BPFs and preamp
RX SOURCE switch. Selecting TX or RX antenna for receiving. More: Picture and Manual
Preamplifier switch and LED indicator.
POWER SUPPLY MUST BE 12V AC not DC. Like this one
Remote Control ready
SMD + THT construction

Remote Control notes:

There is NO IP/web based remote control inside the box. RJ45 connector is only for DC voltage between controller and feeder. Remote Control can be done by the DB15M connector at the rear panel. When you apply +12 to 14 V DC to direction pin at this connector, relay automaticly deactivate front panel switches and you can control it over these external voltages at DB15M Remote Control connector. All LED indicators still work. More at Manual web page.
CONTROLLERS: REMOTIUS 64 or OLI IP 12

Technical articles:

Introduction of our remote controlers At Technical Blog
Remote K9AY++, 4-WAY beverage system and 7ANT At Technical Blog

Controller Block diagram:

Bi-dir beverage atenna - ONE coax output More: link

Broadband 0,2 MHz - 30 MHz
Bi-directional - two directions with one beverage antenna
Low noise
Twinlead or open wire line
50/75 ohm feed line version
Two construction versions
1. Antenna element in the air
2. Antenna element on ground = BOG Construction and classic vs. BOG
ONE coax output to 4-way middle switch.
One coax version is switchable by positive voltage (+12V) - negative voltage on request.
Common-mode coax choke included. Compare to others on market
Electrostatic protection with glim lamps.
Stainless connections screws.
Quality PTFE SO-239 or F connector.
IP56 box. Recommended to protect it against water and snow.
Size 10x10 cm (feeder), 5x6 cm (terminator).

4-way beverage switch More: link

Broadband
High voltage protections
50 or 75 ohm feed line versions
Common-mode coax choke included for OUTPUT coax

Electrostatic protection with glim lamps.
Stainless screws.
Quality PTFE SO-239 or F connector or N on request.
IP56 box.
Size 10x10 cm.

Control voltage up to 15 V AC/DC
Switch is controlled by - 12 V DC or AC
Maximal current up to 300 mA
Insertion loss less than 0,5 dB
Common-mode current choke with isolation over 30 dB at output port

Example for controller with 4-way beverage system and simply K9AY loop antenna:

Parameters:

Power supply 12-14 V AC!!! min. 1,5 A With DC power supply you will not be able to switch directions over the coax line.
Preamplifier with 1W NPN transistor 2SC5551A
Preamp BIAS current 10 to 70 mA
Gain: up to 18 dB
Noise Figure (NF) < 2 dB
REAL OIP3 34 dBm
Input HPF > 100kHz (AC limiter)
BPF insertion loss lower than 1dB
Bias tee AC/DC max. 350 mA (for 4-way beverage system)
HPF > 100 kHz as AC noise eliminator (80 dB at 20 kHz)
TX power from TRX to TX antenna port up to 400 W
PTT IN/OUT - only loop, no delay, TX to GND
PTT logic is 5 V compatible (OM-power)

Controller for K9AY++ and 4-way system:

Example of the Remte Control with external IP relays:

REMOTE CONTROL directly compatible with OL IP 12:

REMOTE CONTROL directly compatible with REMOTIUS 64:

Band Pass Filters characteristic:

160m BPF

80m BPF

40m BPF

Band Pass Filters characteristic with preamplifier:

Option - Common-mode current choke to ham shack:

Link to CMCC

CMCC	CMCC 1 to 3 port

Download

Controller
Manual page for versions:	< 2022	> 2022
Front Panel board rev. 1.2 RC	sch	pcb	pcb
Controller connector board rev. 3.2	sch	pcb	375
RX/TX switch board rev. 1.1	sch	pcb	379
Internal BPF and Preamp board rev. 1.3	sch	pcb

We believe open source is a better way of doing things. View and download the Shield Schematic and PCB Kicad/Eagle CAD files, LibreCAD .DXF, or Inkscape .SVG files. The hardware designs are released under the Attribution-NonCommercial 2.0 Generic