Antenna four to one ultimate QRO switch by OK2ZAW
- Four outputs to one input.
Frequency range DC-30 MHz
- Characteristic impedance 50 ohm
Power rating DC to 30 MHz 4 kW continue wave 7.5 kW PEP (SWR < 1:1.7) (tested with tsunami)
- Designed for OM-power OM-4000++ PA style
- High quality PCB thickness 2 mm
- Two relay version, 12 or 5 Volt
- Connectors PL-259 female with gold plated.
- Power consumption < 3W.
- Disconnect output terminated by 50 ohm or short.
- Aluminium shield enclosure.
- Aluminium mounting holder with bracket.
- Stainless screws
- Size 190 x 120 x 150 mm
- Weight 1.4 kg
The measured values
|4 to 1 QRO, version 1||pcb||sch||eagle139|
|4 to 1 QRO, version 5.0||pcb||sch||eagle139|
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 photos