Antenna six to two switch by OK2ZAW
Main functions:
- Six outputs to two inputs.
- Frequency range DC-30 MHz
- Characteristic impedance 50 ohm
- High isolation between A nd B ports, better then 80dB.
- Insertion loss better then 0.05dB.
- Power rating DC to 30 MHz
- 2 kW continue wave
- 3,5 kW PEP (SWR < 1:1.7) (tested with OM-3500)
- High quality PCB thickness 2 mm
- Two relay version, 12 or 5 Volt
- Connectors PL-259 female with gold plated.
- Power consumption < 4W.
- Unselected antenna ports are grounded.Do you need 50 Ohm loads for Triplexer?
- Without DC power the antenna ports are grounded.Triplexer version
- Hazardous states are excluded with FIFO interlock additional board.
- Aluminium shield enclosure.
- Aluminium mounting holder with bracket.
- Size 222 x 145 x 75 mm
- Weight 2 kg
Isolation example:
- TRX A output power 1kW = 60dBm
- isolation to port B is 80dB -> 60dBm - 80dB = -20dBm
- ~ 10uW at TRX port B
Do NOT forget to:
- Your antennas isolation!
- The safe power isolation is not only about the switch isolation!
- Never switch relay during TX!
The measured values
![]() VSWR ![]() |
![]() Isolation A-B ![]() |
![]() The worst SWR ![]() |
![]() Isolation A to B ![]() |
![]() Isolation port A to 1, B to 2 ![]() |
![]() Insert loss port B to 6 ![]() |
![]() Insert loss port A to 6 ![]() |
Download
6 to 2 Antenna switch | |||||
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main version 3 | pcb ![]() |
sch ![]() |
eagle2036 | ||
interlock (FiFo) version 3 | pcb ![]() |
sch ![]() |
eagle1554 | ||
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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 |
Users implementation
![]() EC2DX ![]() |
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