K9AY/4-way beverage RX antenna CONTROLLER - classic/remote
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 1,5V 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:
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 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
- SMD + THT construction
- REMOTE version - LED Indicator LOCAL / REMOTE Picture
Controller Block diagram CLASSIC / REMOTE version:
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)
Example for controller with 4-way beverage system and simply K9AY loop antenna:
Controller comparison CLASSIC / REMOTE version:
Controller comparison for K9AY++ and 4-way system - THIS PAGE IS ABOUT THE LEFT one:
REMOTE CONTROL version:
- 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
Example of the Remote Control with external IP relays:
REMOTE CONTROL directly compatible with OL IP 12:
REMOTE CONTROL directly compatible with REMOTIUS 64:
One cable needed:
Band Pass Filters characteristic:
160m BPF |
80m BPF |
40m BPF |
Band Pass Filters characteristic with preamplifier:
160m BPF with preamp |
80m BPF with preamp |
40m BPF with preamp |
BYPASS with preamp |
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 | 373 | |
RX/TX switch board rev. 1.1 | sch | pcb | 378 | |
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 |
Related products - to complete RX system:
Bi-dir beverage atenna - ONE coax output More: link
4-way beverage switch More: link
K9AY simply feeder More: link
Option - Common-mode current choke to ham shack: Link to CMCC
CMCC |
CMCC 1 to 3 port |