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Call 0345 2300 599SO9I StackMatch 3x1
Split one transmitter or amplifier between up to three antennas, combine stacked arrays or instantly select a single antenna from the same high-power RF switching system.
Choose between 2kW or 4kW power handling and either the 1.8-7MHz or 14-30MHz frequency-optimised version when ordering.
The SO9I StackMatch 3x1 is designed to route one transceiver or amplifier to one, two or three antennas simultaneously.
Its classic application is an antenna stack, where two or three identical antennas mounted at different heights are fed in phase. StackMatch divides the RF power equally between the selected outputs, allowing the complete array to be controlled from a single feed.
It is equally useful with different antennas or antennas pointing in different directions, giving contest and DX stations the ability to transmit in multiple directions at once without continually changing feedlines.
One Radio. Up to Three Antennas.
RF from your transceiver or power amplifier enters through the common input and is routed to the selected antenna outputs.
When two or three outputs are active, the transmitted power is divided equally between the selected antennas. When only one output is selected, the StackMatch operates as a conventional 3x1 antenna switch.
The system can therefore move seamlessly between a single antenna, paired antennas or a complete three-antenna stack.
Use Any Antenna or Combination
When using two or three identical antennas as a phased stack, use identical feedline lengths between the StackMatch and each antenna to maintain the intended phase relationship between the antennas.
StackMatch Controller
SO9I's separate StackMatch Controller provides straightforward manual selection using a rotary control with LEDs showing which antennas are active.
View StackMatch ControllerMOAS II Integration
For more advanced contest or multi-operator stations, StackMatch can also be integrated into the SO9I MOAS II station management system for automated antenna selection.
The StackMatch 3x1 is the RF switching unit. The separate StackMatch Controller is required for SO9I's dedicated manual control arrangement, or the unit can be integrated into a compatible automated control system such as MOAS II.
Designed for High-Power HF Stations
SO9I uses a reinforced copper layer on the internal PCB to reduce heating and improve reliability when handling high RF power.
Unused antenna outputs are automatically disconnected, while the selected combination is controlled through the rear 9-pin D-Sub connection.
The unit is housed in a durable black powder-coated enclosure and this ML&S configuration is supplied with UHF RF connectors.
Four StackMatch 3x1 Variants
StackMatch 3x1 User Manual
Refer to the SO9I instructions for control wiring, installation and antenna configuration information.
View StackMatch 3x1 User ManualSO9I StackMatch 3x1 Technical Specifications
Power & Frequency Options
When feeding a conventional stack of identical antennas, use equal-length feedlines from the StackMatch to each antenna to maintain the intended phase relationship.
Shipping:
We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.
Returns:
If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]