The 1.5–7 GHz pass-through RF detector with TTL output is designed for high-precision monitoring of RF signal power in transmission paths and protecting radio frequency equipment from damage. The device tracks radiation levels and high Standing Wave Ratio (SWR), generating a discrete control signal when critical parameters are exceeded. The integrated protection functionality allows for immediate power-off or switching of the transmitter into a safe mode before the final power amplifier stages fail.
🫡 We Are a Team of Veterans
We regard this pass-through RF detector as a critical protection element for electronic warfare hardware, communication systems, and RF transmitters. Antenna mismatch, damaged cabling, or operating on an unrated frequency causes rapid overheating and burnout of expensive power amplifiers. This module functions as an automatic fuse, detecting reflected waves and outputting a clear logic signal for emergency system shutdown.
The module integrates seamlessly into existing high-frequency lines thanks to its pass-through design with minimal insertion loss. The inclusion of a standard TTL output simplifies interfacing the detector with flight controllers, control microcontrollers, or automation boards without requiring complex analog-to-digital converters.
⚙️ Technical Specifications
Frequency range: 1,5–7,0 GHz
Device type: Pass-through RF detector
Output signal: TTL (discrete logic level)
Protection feature: Reflected wave / high SWR
Insertion loss: ≤ 0,5 dB
Impedance: 50 Ohm
Supply voltage: 5 V DC
Connector type: SMA-Female
Operating temperature range: -30°C to +65°C
Dimensions: 45×32×15 mm
Commentary / Comments
The key advantage of this detector is its fast response time and broad frequency range from 1.5 to 7 GHz, covering the most widely used channels for communication, video transmission, and control links. Due to its inline pass-through configuration, the unit installs directly between the transmitter output and the antenna feeder system without distorting the primary signal or reducing operational range.
The TTL output toggles state upon detecting hazardous levels of reflected power caused by antenna disconnects, physical damage, or impedance mismatch. This allows system designers to automatically cut power to the amplifier within microseconds, protecting high-cost RF components from catastrophic thermal failure.
🎯 Target Audience / Suitable For
Electronic warfare and military communications specialists obtain a robust tool for automatic protection of high-power transmitting stations and countermeasure modules in field conditions. The device prevents output amplifier destruction during accidental power-ups without an antenna, as well as cable damage from shrapnel or mechanical stress. Simple integration via the TTL channel enables hardware-level protective logic across the system.
Unmanned system engineers and developers designing ground relays, airborne transmitters, and link equipment can utilize this detector for continuous monitoring of antenna-feeder line integrity.
Technical technicians maintaining and repairing high-frequency equipment receive a compact module for building test benches, automated diagnostic setups, and protecting measuring instruments against reverse power spikes.

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