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QRO.cz RX Preamp and Bias Tee Module Box Combo
This powerful combo from QRO.cz includes the RX Preamp Module Box with a 2N5109 transistor and a Bias Tee Voltage Injector, offering a complete solution for enhancing receive-only antenna systems. The preamp is based on the proven W7IUV design and delivers up to 18dB of gain with a built-in variable attenuator, allowing precise control over signal amplification. A multi-turn potentiometer enables fine-tuning of the transistor bias for optimal linearity and performance. Two onboard relays automatically switch the unit to bypass mode when power is not present. Power can be supplied either directly via an external DC source or through the included bias tee, which injects DC voltage into the coaxial feedline while isolating the radio from DC current. The bias tee simplifies installation by combining RF and DC over a single coaxial cable, making it ideal for powering remote devices like preamps, relays, or antenna switches. Together, these components provide a clean, efficient, and flexible receive system for antennas such as beverages, Double Half Delta Loops, flags, and other popular RX designs.
Not Yet Reviewed
$299.99
QRO.cz OLI 12 IP-Based Station Controllers
QRO.cz OLI 12 IP-Based Station Controllers are compact web-controlled IP relay controllers designed for seamless integration with K9AY++, 4-WAY beverage antenna systems, and 7ANT remote antenna controllers. Housed in a rugged aluminum enclosure, these controllers offer 12 positive-voltage outputs with built-in electronic fuse protection, making them ideal for remote antenna switching, preamp control, and band-pass filter selection. With a web-based user interface, support for Node-RED, Stream Deck, and Touch Portal, the OLI IP Controllers enable intuitive and flexible station automation. They connect via a standard DB15 cable and LAN port, requiring no firmware uploads or complex configuration—just plug in and go.
Not Yet Reviewed
$258.99
QRO.cz Remotius 64 Advanced IP-Based Station Controllers
QRO.cz Remotius 64 Advanced IP-Based Station Controllers are powerful and flexible IP-based remote control consoles designed for advanced station automation. Engineered for seamless integration with QRO.cz systems like the K9AY++, 4-WAY, and 7ANT controllers, they offer a total of 53 configurable outputs across four independent banks. With a web-based user interface, multi-user access, and compatibility with platforms like Stream Deck and Node-RED, the Remotius 64 is ideal for managing complex antenna switching, power control, and environmental monitoring in remote or automated Amateur Radio stations. Built-in protections, temperature sensor support, and PTT hot-switch safety make it a robust and reliable choice for serious operators.
Not Yet Reviewed
$317.49
QRO.cz OLI 16 IP-Based Station Controllers
QRO.cz OLI 16 IP-Based Station Controllers are compact, universal web-controlled IP relay controllers housed in a rugged aluminum enclosure, these controllers offer 16 positive or negative (GND) voltage outputs with built-in electronic fuse protection, making them ideal for remote antenna switching, preamp control, and band-pass filter selection. With a web-based user interface, support for Node-RED, Stream Deck, and Touch Portal, the OLI IP Controllers enable intuitive and flexible station automation. They connect via a standard DB25 male cable and LAN port, requiring no firmware uploads or complex configuration.
Not Yet Reviewed
$271.99