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Call 0345 2300 599SO9I 6×2 Remote Antenna Switch
Share up to six antennas between two independent radios, with high-power switching, hardware antenna-conflict protection and clear two-colour status indication.
Switch Unit Only - Controller Required
This listing is for the SO9I 6×2 remote antenna switch only. A separate SO9I Controller 6×2 is required for normal manual operation.
The controller, control cable, coaxial cables, antennas, grounding accessories and other station equipment are not included unless specifically stated otherwise.
Built for SO2R and Multi-Operator Stations
The SO9I 6×2 Switch allows two separate transceivers to share a bank of up to six antennas without repeatedly moving coaxial cables around the shack.
Each radio can select its own available antenna through the separate Controller 6×2, making the system particularly well suited to SO2R, 2BSIQ and multi-operator contest stations.
It is equally useful in a home station where two different radios need flexible access to the same collection of HF antennas.
Independent Antenna Selection for Two Radios
One Antenna Cannot Be Assigned to Both Radios
Inside the switch, a mechanical interlock prevents both radios from being connected to the same antenna at the same time.
This safeguard is handled in hardware rather than relying solely on software or operator procedure, helping prevent accidental shared antenna selection.
It provides an important additional layer of protection in a two-radio station, particularly where both transmitters may be active during contest or multi-operator operation.
Greater Than 80dB
The specified isolation between the R1 and R2 ports is greater than 80dB, helping keep the two radio paths separated inside the switching system.
Less Than 0.1dB
Very low specified insertion loss helps keep additional loss through the remote switching system to a minimum.
See Which Radio Has Which Antenna
Two-colour LEDs provide immediate local indication of which antenna is selected and which radio is using it. This makes the live switching state easy to confirm during setup, maintenance and fast-paced contest operation.
SO9I Controller 6×2
Manual operation requires the separately available SO9I Controller 6×2.
The controller provides two independent rotary selectors together with red and green LED indication, allowing each operating position to choose an available antenna from the shared six-port system.
Unused Antenna Ports Are Grounded
Antenna ports that are not currently in use are automatically grounded by the switching system, helping discharge static build-up from unused antennas.
This provides useful additional protection, but should not be regarded as a substitute for a correctly designed station earth, surge protection or lightning-protection system.
Up to 4kW
The switching system is designed for high-power HF station use, with a stated maximum handling capability of 4kW.
Heavy Copper Construction
A reinforced copper layer on the PCB helps reduce heating and supports reliable operation in demanding high-power installations.
Substantial Desktop or Station Installation
The 6×2 switching system is housed in a 300 × 165 × 62mm black powder-coated enclosure with clear connection markings for the radio and antenna ports.
Made for Serious Multi-Radio Stations
Switch Unit Only
This product includes the SO9I 6×2 Remote Antenna Switch only. The SO9I Controller 6×2, control cable, coaxial cables, antennas, grounding equipment and other station accessories are sold separately unless specifically stated otherwise.
SO9I 6×2 Technical Specifications
Switch Configuration
Electrical Performance
Antenna Allocation
Station Integration
RF Ports
Housing & PCB
Switch Unit Only
The SO9I Controller 6×2, control cable, coaxial cables, antennas, grounding accessories and other station equipment are not included unless specifically stated otherwise.
Shipping & Delivery
We offer UK and international delivery services, including next working day and selected weekend options for eligible orders. Available services, prices and estimated delivery times are displayed at checkout.
Delivery Information
Delivery options depend on the parcel's size, weight, contents and destination. Express and weekend services are subject to availability and cut-off times. Oversized or exceptionally heavy items may require a specialist delivery quotation.
Returns & Cancellations
To arrange a return, please contact ML&S or complete our returns form. You may also exercise your statutory right to cancel by email or another clear statement, without completing the form.
Changed Your Mind?
Under the Consumer Contracts Regulations 2013, most purchases made online or by telephone can be cancelled within 14 days of receipt.
You must notify us of your cancellation within this period and return the goods within a further 14 days.
Please handle all goods with care. Returned items must be in a resaleable condition, complete with their original packaging, and all supplied accessories.
You may inspect goods as you would in a shop. Handling beyond what is necessary to inspect them may result in a lawful deduction for diminished value.
Exceptions
Modified Equipment & Reversal Charges
Additional return conditions may apply to equipment modified at the customer's request, including wideband transmit or receive modifications.
ML&S may charge a reasonable fee to reverse physical modifications and restore the equipment to its original factory specification. Any such charge will be agreed in advance and deducted from your refund.
Custom-Made Cable Assemblies
Coaxial cable assemblies manufactured to a customer's specifications are excluded from the 14-day return policy and are non-refundable unless faulty.
Software & Labour Charges
Labour and modification charges requested by the customer are non-refundable once the work has been completed.
Computer software may only be returned under the 14-day return policy if it remains sealed and unopened.
Return Postage Charges
Customers are responsible for the direct cost of returning unwanted or incorrectly ordered goods, where permitted by law. You may arrange your own suitable return postage or use one of our optional prepaid services.
Standard Parcels
Royal Mail Return Label
£5.95
Per parcel
For eligible standard-sized parcels, subject to Royal Mail restrictions. Free collection included.
Larger Parcels
DPD Return Label
£7.95
Per parcel
For larger or heavier parcels and any shipments with batteries.
Collection Service
DPD Collection
£25.00
Per parcel
Available upon request for eligible addresses, subject to availability.
Prepaid return charges will be confirmed before booking and deducted from your refund.
These prices apply to eligible UK mainland returns. Oversized items, specialist products and returns from other destinations may require a separate quotation. Estimated return costs will be disclosed before purchase.
Faulty or Incorrectly Supplied Goods
Return postage charges do not apply to faulty, damaged or incorrectly supplied goods returned under statutory rights. ML&S will arrange a free return in these circumstances.
Refunds
Refunds are processed without undue delay following receipt and inspection of returned goods, and no later than 14 days after we receive goods returned under statutory cancellation rights.
Refunds will be issued to the original payment method. Any prepaid return postage charges or lawful deductions for diminished value will be itemised.
Warranty Terms & Conditions
New Equipment Warranty
Minimum 2-Year Warranty
All new products supplied by ML&S carry a minimum two-year warranty against manufacturing defects, excluding batteries, which are covered by separate warranty terms.
Some manufacturers provide extended warranties, such as the three-year warranty available on eligible Yaesu equipment. Any additional coverage is subject to the manufacturer's terms and conditions.
Our workshop may assess and repair faulty equipment on site or refer it to the manufacturer or an authorised service centre where necessary.
Warranty exclusions may include batteries, normal wear and tear, accidental damage, misuse and unauthorised modifications, as specified in the applicable warranty terms.
All warranties are provided in addition to your statutory consumer rights against ML&S, which are not limited by the warranty period.
International Returns & Warranty
Unless otherwise stated, ML&S warranty servicing is carried out in the UK. International customers must contact us before returning goods to confirm shipping and customs requirements.
International customers are responsible for return postage unless the goods are faulty and ML&S has been notified within a reasonable time.
ML&S accepts no responsibility for additional charges resulting from incorrectly completed customs documentation. Any additional duties charged to ML&S as a result will be billed to the customer before return of the goods.
Need Help With a Return?
Our team can assist with returns, postage arrangements, modifications and warranty claims.
Nothing in these terms excludes or limits your statutory consumer rights.

