One2two stack match

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

Manual / Order page:

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:

Frequency range: 1,8 MHz to 30 MHz (could be made for 6m too).
Power rating MP < 3kW and HP < 5kW. Normal CW, SSB, RTTY operation. In contest mode: CW, SSB 75% and RTTY 50% of HF power
Two outputs to one input.
Internal Wide Band or external Phase Shifter.
Antennas are diven IN Phase (BiP) or OUT Phase (BoP)
All combinations can be selected: ANT1, ANT2, BiP, BoP
Own (QRO.cz) ferrite cores for high power with great HF parameters.
QRO64-61 for power up to 3kW.
QRO64-2D-61 for power up to 5kW.
Two relays in series 4x8A in RF lines.
Status LED indicators.
High quality 2mm PCB.
PTFE connectors PL-259 , UHF N or 7/16 DIN female with gold plated.
High quality ATC RF capacitors.
Relay voltage 12V. Different on request.
Power consumption < 6W.
Aluminium shield enclosure.
Aluminium mounting holder with bracket (pipe max 52mm). More info
Size 222 x 145 x 75 mm.
Weight 1.4 kg

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).

Yagi antennas stacking (one tower)
Antennas are diven IN Phase (BiP) or OUT Phase (BoP)
Multi beaming - antennas to more directions (yagi, vertical, dipole...)
Phasing two antennas: 0 deg or PH line added

Compare antennas and BiP/BoP:

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):

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

Easy Controller for this Stack Match LINK THERE

Download

Stack match
Version 7	pcb	sch	eagle184
Version 8	pcb	sch	eagle184

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