72 Clear the Air. When Marconi first began experimenting with a spark gap transmitter, he didn’t have to worry about RFI. Nowadays though, everything from household appliances to overhead power lines can pollute the radio spectrum. If you’re dealing with unwelcome noise (QRN) in your shack, there are solutions. Check out the chokes, ferrite beads, noise finders and audio enhancers found in this catalog. WARNING: For Proposition 65 information, see p. 3 Antenna & Radio Switches Antenna Genius 8x2 Plus Antenna Switch This switch accommodates up to eight antennas and two transceivers, making it an excellent choice for dual RX transceivers, single operator/two radio (SO2R) events, and multi-operator contesting stations. The unit is engineered for remote control via Local Area Network or Wide Area Network connections. Constructed of a rugged stainless steel chassis with a wall mount style flange on the top and bottom, the switch covers 160-6M and handles up to 3,000W SSB/CW (50 MHz should be limited to 800W for constant carrier modes such as FT8, RTTY). The capacity of usable antenna ports can be expanded to 16, 24, or even 32 by stacking two or more Antenna Genius 8X2 units, ef ectively creating a "Super-Switch." Other features include high port-to-port isolation; an integrated hardware-level interlock system that prevents both transceivers from connecting to the same antenna; user-programmable band ranges and a variety of control methods including Automatic Antenna Switching for FlexRadio transceivers; and SO2R operations with plug-and-play setup. The Antenna Genius has been designed for FlexRadio 6000 series transceivers but will work with most modern HF radios. Enter “AG2X8” at DXEngineering.com for more details. O3A-4O-AG8X2 Antenna Genius 8x2 Plus Antenna Switch .........................$950.00 6:2 MK2 Classic Antenna Switch With six antenna output connectors that can be switched to two amplifier or transceiver inputs, the 6:2 MK2 covers a wide frequency range from DC-60 MHz. Designed for 3 kW continuous power and 4 kW PEP (SWR < 1:1.7), the antenna switch has been successfully tested with high-power amplifiers from OM Power and others. Users can expect smooth operation; high isolation between ports to ensure signals remain clear and interference- free; minimal insertion loss; easy integration into existing systems; positive DC voltage control via either 2 x 6 wires or 2 x BCD; and high-quality construction including weatherproof aluminum housing, 2mm-thick RF PCB, and robust mounting bracket for masts up to 2" in diameter. QRO-6T2RFS 6:2 MK2 Classic Antenna Switch, 4,000W, SO-239 .............$699.99 OLIIP Universal Controllers These devices have 12 or 16 universal outputs that can be configured as either positive or negative output drivers. They of er a web-based, customizable user interface, beam map control, and compatibility with various systems such as NodeRed, Stream Deck, and others. The controllers have DC protection (electronic fuse) and a LAN connection with double common-mode filter and overvoltage protection. Only a LAN and DB15 (12 output) or DB25 (16 output) is required. QRO-OLIIP12 12-Output Universal Controller ..........................................$258.99 QRO-OLIIP16 16-Output Universal Controller ..........................................$271.99 Enter "QRO Controller" at DXEngineering.com for more details about all QRO.cz controllers. Signature 1A2R One Amp/Two Radio Switch The Signature 1A2R switch from 4O3A is an RF and PTT router which routes one amplifier between two radios. Switching is based on the PTT signal using the “first one wins principle.” Users can disable the PTT switching for each radio independently by flipping a switch. Once connected, the amp is routed permanently and there is no need to rewire the setup. In case of failure while running SO2R, you can switch the amplifier from radio B to radio A as a backup. The 3 kW- rated device is available with SO-239 “PL” or Type-N female connectors. O3A-4O-AMP2R-PL Signature 1A2R 1 Amp/2 Radio Switch, SO-239 ................$515.99 O3A-4O-AMP2R-N Signature 1A2R 1 Amp/2 Radio Switch, Type-N ................$515.99 8-Antenna A/B Switches Due to the popularity of its A/B switches, 4O3A engineered a super-switch containing eight A/B switches in a single box. With two Antenna Genius switches, it can form a high-isolation 8×4 antenna matrix for eight antennas to four radios. Available with either SO-239 “PL” or Type-N female connectors, the 8XAB switches feature 3,500W input power and isolation on unused port at 30 MHz: 56 dB-70 dB (On/Of status). Enter "8XAB" at DXEngineering.com for more details. O3A-4O-8XAB-PL 8 Antennas to A/B Ports Switch, 3,500W, SO-239 Female; $775.99 O3A-4O-8XAB-N 8 Antennas to A/B Ports Switch, 3,500W, Type-N Female; $775.99 Antenna Genius 8x1 Switch Usable from 160-6M up to 3,000W, the Antenna Genius Switch can switch eight antennas to one radio or amplifier and can be operated completely remotely. In addition to manual programming and the optional Controller Genius unit, users also benefit from an app for Windows, iOS and macOS, as well as integration into the operating system of FlexRadio transceivers. Other features include adjustable band limits, built-in Ethernet module for remote control via LAN or the Internet, and lifetime firmware updates. Requires 12-14VDC. O3A-4O-AG8X1 Antenna Genius Switch, 8x1, 160-6M up to 3,000W .........$839.99 A50 Antenna Dummy Load Relay The A50 switch is used as the 50 Ω load for open ports on 4O3A’s HFC3000 combiner to prevent tuning degradation. O3A-4O-A50-PL Antenna Dummy Load Relay, 12VDC, SO-239 ..................$181.99 4O3A Accessories The high-isolation A/B Switch Relay is commonly used for routing an antenna between two existing antenna switches. Also available is the Manual Antenna Controller S8, an accessory for use with the Antenna Genius, Antenna Switch 8x2, or PS3000RX splitter. O3A-4O-AB-PL Antenna A/B Switch Relay, 12VDC, SO-239 .......................$181.99 O3A-4O-MAC-S8 Manual Antenna Controller S8 for Antenna Genius ........... $59.99 RS-3000 Coaxial Crossover Switch 2X2 With the RS-3000 coaxial crossover switch, you can use amplifiers and antennas on demand in a flash by switching on two radios—a useful tool for SO2R and Multi-Single contesting. For example, when operating MS, you can use the RS-3000 to switch the in-band radio to temporarily borrow the bigger antennas and amps of the RUN station to break through a pileup and capture a coveted multiplier. Once you’ve got the multiplier, just switch back to the default configuration—just one of many uses for this handy device. Available with SO-239 or Type-N connectors. O3A-RS-3000-PL Coaxial Crossover Switch 2X2, SO-239 ...............................$379.99 O3A-RS-3000-N Coaxial Crossover Switch 2X2, Type-N ...............................$389.99 Stackmatch 1:2 The Stackmatch 1:2 is an easy-to-use device for connecting two antennas together to achieve more gain, a dif erent direction, or a dif erent elevation. The same or dif erent antennas can be used. An external switch (not included) is used to select either antenna 1, antenna 2, or an interconnection of both antennas. Both antennas are connected either via a broadband, internally installed phase shif er system or via a narrowband external bypass line made of coaxial cable (not included). The interconnection of the two antennas results in dif erent directional ef ects depending on the phase position (in phase, out of phase), as well as in the elevation. You can use the fast switching in a contest or in a DX pileup to receive a better signal and to fade out QRM. When transmitting, the transmit power can always be switched to both antennas or only to one antenna (e.g., to cover both local and distant areas simultaneously in a contest). This 1.8-30 MHz device is power rated at 3 or 5 kW (100% CW, SSB, and non-contesting RTTY; 75% for CW and SSB in contest mode; 50% for RTTY and FT8 contesting). QRO-SM1-2-H Stackmatch 1:2 Antenna Connecting Unit ...........................$559.99 O3A-RS-3000-PL O3A-4O-AMP2R-N A/B Station Selector Interlocked Coaxial Relay This device was designed for two-station multi-operator contesting from 160 through 10 meters, including SO2R setups. Two radio inputs and one output for an amplifier, antenna or another relay allow the A/B Station Selector to function as two interlocked SPST normally open contact coaxial relays when controlled by a user-supplied SPDT switch or automation. This device is critical for allowing only one radio to select an antenna while preventing the other radio from taking it away while transmitting. Multiple A/B Station Selectors in combination with multi-port antenna switches and band decoders may be employed to create an automated band-specific antenna selector system. Two selectors may be configured as a DPDT reversing switch, useful for switching two stations to two towers or switching two transceivers to two amplifiers tuned to dif erent bands or segments. The DX Engineering A/B Station Selector is a drop-in replacement for the legacy TopTen Devices unit. It features three UHF female/ SO-239 connectors, Radio A, Radio B and Output. DC voltage input for each port selection relay is 12-14VDC. It features excellent port-to-port isolation, and low SWR and insertion loss. It’s rated for full legal SSB and CW power for the 160-10 meter bands. Enter “DXE AB Selector” at DXEngineering.com for more details. DXE-A-B-SELECTOR A/B Station Selector for Multi-Op Contesting ................$199.99 We’re All Elmers Here! Get Expert Support at: [email protected]
