Antenna one to two STACK MATCH with BiP/BoP function by OK2ZAW

Manual / Order page:


remoteqth server Easy Controller SM 1-2 wiki order
Stack Match is designed for the stack of antennas - do matching and power splitting to
two antennas. This Stack Match allows any of the four combinations for: upper - lower - Both In Phase(BIP) or Both Out Phase(BOP) antennas, vertically shaping the radiation lobes and changing the radiation take-off angle to optimize the signals depending on the varying ionospheric propagation angles.
Could be controlled independently for RX and TX - depends on controller.
Works with Mono-band antennas as well as Tri-band and Multi-band antennas! ( if wide band phase transformer is used )

Main functions:


Application:

You can stack two mono or multi band antennas. Phasing angle can be external with the coax cable or Wide Band with internal transformer (180 deg). stack match example


Compare antennas and BiP/BoP:

stack match example

There is comparison of the four combinations of a stack of two five element Yagi antennas. The possible combinations are as follows:
  • TOP antenna in 30m / 99ft - BLACK color.
  • BOTTOM antenna in 15m / 50ft - RED color.
  • BIP - Both IN Phase antennas in 15/30m - 50/90ft - BLUE color. Second picture: BLACK color.
  • BOP - Both OUT Phase antennas in 15/30m - 50/90ft - GREEN color. Second picture: RED color.

  • Top - Bottom - Both In Phase
    and Both Out of Phase

    Both In Phase
    and Both Out of Phase


    Phasing Line (more in Manual):

    stack match example

    Parameters:

    Four versions: ( MP / HP and internal / external PH shifter )
    Power handling * < 3 kW < 5 kW
    Frequency range ** 1,8-50 MHz 1,8-50 MHz
    Characteristic impedance 50 ohm 50 ohm
    Relay version 12 V DC 12 V DC
    PCB thickness 2 mm 2 mm
    The measured values: ( stack match optimized for 10-20m bands )
    VSWR

    IN
    to
    ANT1
    VSWR

    IN
    to
    ANT2
    VSWR

    IN
    to
    ANT1 + ANT2 BIP
    VSWR

    IN
    to
    ANT1 + ANT2 BOP
    (internal WB PH shifter)
    *) Normal CW, SSB, RTTY DX operation. In contest mode: CW, SSB 75% and RTTY 50% of HF power.

    **) Designed for 1,8 to 30 MHz, works also on 6m but could be optimalised. You can ask for 6m version.



    Matrix table

    stack match example
    stack match example



    Easy Controller for this Stack Match LINK THERE

    Stack match Controller

    Download

    Stack match
    Version 7 pcb sch eagle181
    Version 8 pcb sch eagle181
    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


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    Laurent FM5BH

    Imre HA9AX

    Imre HA9AX