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4O3A Parts and Accessories
4O3A AB Switch Relay
The 4O3A AB Switch Relay is a high isolation A/B switch, needed for some applications such as extension of an antenna matrix. The most common use case is routing the antenna between two existing high isolation antenna switches, so the isolation of this A/B Relay isn't quite as high as the RS3000 or 1A2R. Additional isolation is realized by grounding of the unused port. AB switch is powered by 13-15V through a dedicated power connector. It has an LED to indicate "out B" status. When powered off the input is routed to out A. AB Switch Relay Specifications: Port-to-port isolation at 30MHz: 56db to 70 dB (On/Off status) RF Power Handling (max.): 4000W Connectors: 3 x SO-239 (O3A-4O-AB-PL) Power: 12V DC @ 120mA Power Indication: LED diode Dimensions, WHD: 3.35 x 5.31 x 2.76 in. (85 x 135 x 70 mm) Weight: 0.22 lbs. (0.1 kg)
Not Yet Reviewed
$181.99
4O3A OM Module Programmable Output Relay Modules
4O3A OM Module Programmable Output Relay Modules are designed for integration with the Antenna Genius 8x2, 8x1, or Station Genius controllers. Housed in a durable stainless steel enclosure, these Output Modules feature 16 dual-output relays, each with independent A and B terminals that can be configured for positive voltage, ground, or a combination of both. This flexibility allows for precise control of external devices such as antenna switches, bandpass filters, or other station automation components. Each output is clearly labeled and equipped with an LED indicator, providing instant visual feedback on relay status. Whether you're building a high-performance contest station or automating a complex RF environment, the OM Module delivers reliable switching with intuitive configuration via Windows-based software associated with the supported controllers.
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$185.99
4O3A Rotator Genius Magnetic Azimuth Sensors
4O3A Rotator Genius Magnetic Azimuth Sensors are calibrated, highly accurate, magnetic azimuth sensors (i.e. a magnetic compass) designed to provide precise antenna direction feedback for Amateur Radio rotator systems. They deliver azimuth readings with ±1° accuracy and connect via standard CAT5e Ethernet cable. While it's intended to work with the Rotator Genius controller, they can also be used as a standalone solution for azimuth readout when paired with a compatible RS485-to-USB or RS232 converter (sold separately) and paired with the downloadable AzimuthReader Microsoft Windows application. Housed in a waterproof enclosure, these sensors are ideal for boom-mounted installations and eliminate the need for traditional pulse or potentiometer-based sensors, offering a reliable and maintenance-free alternative.
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$126.99
4O3A PGXL Rack Mount Shelf
The 4O3A PGXL Rack Mount Shelf is a precision-engineered solution designed specifically to house the 4O3A Power Genius XL amplifier in a standard 19-inch equipment rack. Built from durable aluminum with a sleek, professional finish, this shelf ensures secure, vibration-free mounting while maintaining optimal airflow and accessibility. These PGXL Rack Mount Shelves offers a clean, reliable way to integrate your PGXL into your rack system. It's the ideal companion for the Power Genius XL amplifier. Requires Assembly.
Not Yet Reviewed
$244.99
4O3A RS3000 Reversible Switch Controllers
4O3A RS3000 Reversible Switch Controllers are designed to improve the safety and efficiency of the RS3000 2x2 Reversible Coaxial Crossover Switch system. They ensure switching between radios and antennas only occurs when neither connected radio is transmitting, preventing accidental switching if one user begins transmitting while the other is still on the air. This makes it ideal for SO2R (Single Operator, Two Radios), MS (Multi-Single), or M2 (Multi-Two) contest configurations. These switch controllers operate on 13–15VDC input. A 3-pin DC output (5.08 mm pin header) connects to the RS3000 Crossover Switch. Before use, connect the PTT lines from both radios to the controller's RCA jacks. The controller connects to the RS3000 switch via the +12V/GND terminals. If a user attempts to switch while the other is transmitting, the controller delays the switch until the PTT line is inactive. During this delay, the "Wait" LED is illuminated. This ensures safe switching regardless of transmission frequency.
Not Yet Reviewed
$149.99
4O3A A50 Antenna/Load Switches
4O3A A50 Antenna/Load Switches serve as 50-ohm loads for open ports on the HFC4500 combiner or other multiplexer, preventing tuning degradation. Applying 12V power connects the input to the combiner's output, linking it to the corresponding combiner or filter. A typical setup switches a filter or a combiner to a monoband antenna. When the A50 is not powered, the switch defaults to a 50-ohm termination for the input and the antenna output is open. NOTE: The A50 is NOT an A/B switch. The manufacturer's label of "A/B Switch" is a product grouping, NOT an indication of the function of this product. The LOAD resistor is internal, so one of three connectors is unnecessary, which leaves an open hole in the chassis, a "normal feature" of the A50.
Not Yet Reviewed
$118.29
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$181.99