Small 3-way RX splitter / combiner board
The splitter or combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads.
Like all passive splitters and combiners, this device is less than ideal. Isolation is maximum only when at least one port are properly terminated.
In this case isolation between the three splitted/combinated ports is maximum when the main port is properly terminated.
This HW is designed only for RX line. Both impedances 50 or 75 Ohm can be selected by the jumper.
Broadband: 0.1 MHz to 60 MHz 3-way Splitter or Combiner Low loss In to Out is typ. -5,8 dB 50/75 ohmimpedance - easy jumper switch
- Quality SMA connectors.
- PCB size = 50 x 50,4.
- Aluminium enclosure size W x H x L = 58 x 24 x 50.
- Available as
- KIT : all parts + PCB
- Assembled : ready to use
- Impedance 50 or 75 Ohm
- Insert loss: around 1 dB
- Split 4,8 dB, together with IL around 5,8 dB
- Isolation more than 18 dB for middle port and more than 23 dB for 1 and 3
- SWR on splitted ports better than 1:1,15 on HF, resp. 1:1,25 on 6 m
- SWR on main port around 1:1,3 on HF, resp. 1:1,4 on 6 m
Antennas combiner - 3 el broad side array RX signal divider 10 MHz signal splitter One antenna to three RX
KIT or assembled
The measured values
IO to port 1
IO to port 2
IO to port 3
Isolation port 1 and 2
Isolation port 1 and 3
Isolation port 2 and 3
Port 2 to IO
Port 3 to IO
Also available without enclosure
|Schematic and board pic||sch||brd|
We believe open source is a better way of doing things.
View and download the Shield Schematic and PCB files.
The hardware designs are released under the
Attribution-NonCommercial 2.0 Generic