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K9AY/4-WAY Antenna Switch Controller

This is antenna controller for K9AY and Bi-directional beverages. You can use DC control wires as well as AC/DC voltage over the coax to antenna. There are Band Pass Filters and preamplifier directly in the controller. Including RX protections and front panel switch between RX and TX antenna.

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255.39 € (tax excl.)
255.39 € without tax
309.02 €
version
  • classic
  • remote
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Description

This is universal controller for 4 directional RX antenna. You can control directions of antenna by DC voltage or you can use internal Bias Tee and apply AC/DC voltage to RX antenna coax. Jumpers inside allow you to set right voltage combinations. There are front end protections, HPF for AC noise blocking, three Band Pass Filters, Preamplifier and RX way switch. Thanks to this switch, you can use RX antennas with any TRX - you do not need RX ANT IN connector at your TRX. Rload knob changes DC voltage from about 6 to 1.5 V and you can use it with K9AY feeder and change loop termination resistance. Version REMOTE has got also possibility to control these features by the external controller.


Main functions

  • 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 direction indicator 0 or 45 deg. - image
  • Three BP/Fs 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
  • POWER SUPPLY MUST BE 12V AC not DC
  • SMD + THT construction
  • REMOTE version - LED indicator LOCAL/REMOTE - image
  • Stainless screws and nuts
  • High quality connectors
  • ASSEMBLED VERSION

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 are preparing new universal web based controller not only for K9AY++. Coming soon ODKAZ.

Parameters

  • Supply 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 - preset to 10 dB
  • Noise Figure (NF) < 2 dB
  • REAL OIP3 34 dBm
  • Input HPF > 100 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

ASSEMBLED: classic version - ready to use
ASSEMBLED: remote version - ready to use

TO COMPLETE RX SYSTEM: RECOMMENDATIONS TO BUY:

Manual

If you want to know more please check our wiki with K9AY/4-way antenna switch controller manual.



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



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



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



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



K9AY/4-way controller classic version block diagram

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



K9AY/4-way controller remote version block diagram

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



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

k9ay/4-way controller with k9ay simply loops switch and 4-way system by qro.cz hamparts.shop



example of the Remote control version with external IP relays

k9ay/4-way controller remote version example with external IP realys 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



Option: Common-mode current choke to ham shack

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



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Product Details

Data sheet

type
ASSEMBLED
design
in enclosure
usage
RX + TX
impedance
both 50 & 75 Ohm
front-end protection
input
frequency range
0.1 MHz to 30 MHz
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