4-way beverage antenna system REMOTE CTRL & BI-DIR 150Ω F

This antenna system consists of 2x Bi-dir beverage sets, 4-way antenna switch and controller.

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611.05 € (tax incl.)
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611.05 €
505.00 € (without tax)
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This antenna consists of 2x Bi-dir beverage sets, 4-way switch and K9AY/4-way 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.

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 tolerant 
  • 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


  • Universal box for K9AY or 4-way Bi-Dir beverage system - front panel image
  • 4-way beverage system can have 4 construction positions in the field - more info in 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 - image
  • LED direction indicator 0 or 45 deg. - image
  • 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 info: image and manual
  • Preamplifier switch and LED indicator
  • SMD + THT construction
  • Stainless screws and nuts
  • High quality connectors

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 automatically deactivate front panel switches and you can control it over these external voltages at DB-15M Remote Control connector. All LED indicators still work. Please, read the manual.
  • We offer now two IP controllers: OLI IP 12 and powerful REMOTIUS 64.

Bi-directional beverage antenna ONE coax output

  • Broadband 0.2 to 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: Classic (antenna in the air) or BOG (beverage on ground)
  • ONE coax output to 4-way middle switch
  • One coax version is switchable by positive voltage (+12V)
  • Common-mode coax choke at output included
  • Electrostatic protection with neon lamps
  • Stainless screws and nuts
  • High quality connectors
  • IP56 boxes - recommended to protect it against water
  • Feeder size 100x100 mm
  • Terminator size 64x58 mm

4-way beverage switch

  • Broadband - 0.1 to 50 MHz
  • High voltage protections
  • 50 or 75 Ohm feed line version
  • Common-mode coax choke included for OUTPUT port
  • Control voltage up to 15 V AC/DC
  • Switch is controlled by -12V DC or AC
  • Maximal current ups to 300 mA
  • Insertion loos less than 0.5 dB
  • Common-mode current choke with isolation over 30 dB at output port
  • Electrostatic protection with neon lamps
  • High quality connectors
  • Stainless screws
  • IP56 box - recommended to protect it against water
  • Size 100x100 mm


  • 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 1 W 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 > 50 kHz (AC limiter)
  • BPF insertion loss lower than 1 dB
  • 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)

Available as

Controller version: remote
Connectors: F
Version: 150Ω classic (wire in the air)
Other versions: available versions of 4-WAY SYSTEM - other versions on request


Included in package

4-way switch assembled and tested
2pcs Bi-Dir beverage assembled and tested
Controller assembled and tested
DC plug - image
DB15 male connector with cover
DB15 female connector with cover

Technical articles

Please check our technical articles about REMOTE SYSTEM.


If you want to know more please check our wiki with 4-way beverage antenna system with controller manual.

K9AY/4-way controller

k9ay++ controller remote version by qro.cz hamparts.shop

K9AY/4-way controller block diagram

k9ay controller classic version block diagram by qro.cz hamparts.shop

k9ay/4-way classic version controller by qro.cz hamparts.shop

Bi-directional beverage antenna classic version with F connector

bi-directional beverage antenna classic version by qro.cz hamparts.shop

4-way beverage switch with F connector

4-way switch rx antenna by qro.cz hamparts.shop

Band Pass Filters characteristic with preamplifier

160m BPF with preamp

k9ay++ system measurement qro.cz hamparts.shop

80m BPF with preamp

k9ay++ system measurement qro.cz hamparts.shop

40m BPF with preamp

k9ay++ antenna system measurement qro.cz hamparts.shop

BYPASS with preamp

k9ay++ rx antenna system measurement poty adapter qro.cz hamparts.shop

example for 4-way beverage system with K9AY simply loops switch antenna

4-way system with k9ay simply loops switch antenna by qro.cz hamparts.shop

Remote Control example

We offer two web-based controllers. OLI IP 12, which is directly designed for K9AY++, 4-WAY and 7ANT RC controllers and REMOTIUS 64, bigger controller which could control more parts and offers more outputs.

There is more ways for remote control:
- Classic UI
- Beam Map
- Stream Deck, NodeRed or custom system

remote options by qro.cz hamparts.shop

remote options remotes 64 and OLI IP 12 by qro.cz hamparts.shop

remote control options K9AY/4-way controller example by qro.cz hamparts.shop

remote options control beam map example by qro.cz hamparts.shop

Option: Common-mode current choke

cmcc common-mode current choke to ham shack by qro.cz hamparts.shop

recommendations to buy rx audite sdr splitter switch by qro.cz hamparts.shop

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Product Details

Data sheet

with controller
product dimensions
65x58x35 mm - PU box IP56
100x100x50 mm - PU box IP56
product weight (brutto)
3.2 kg
package dimensions
26x35x27 cm
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