![RT-B77 PLB (2)](https://i0.wp.com/rhothetaint.com/wp-content/uploads/2022/11/RT-B77-PLB-2.png?resize=378%2C250)
RT-B77
Personal Locator Beacon
The RT-B77 HELB is currently the most advanced and most powerful personal locator beacon (PLB) available on the market for man overboard (MOB) emergencies. The RT-B77 is designed for automatic activation upon contact with water or inflation of the wearer’s life jacket and can also be activated manually.
RT-100
Emergency Receiver
The RT-100 Emergency Receiver (also marketed under the name “CrewGuard”) monitors the international emergency frequency 121.500 MHz. The receiver triggers an acoustic alarm whenever a signal is received on this frequency. At the same time, a relay activates external alarm devices.
![RT-100 (2)](https://i0.wp.com/rhothetaint.com/wp-content/uploads/2022/11/RT-100-2.png?resize=200%2C377)
![RT-202 DCU AU](https://i0.wp.com/rhothetaint.com/wp-content/uploads/2023/04/RT-202-DCU-AU.png?resize=868%2C579)
RT-202
CrewFinder MOB Direction Finder System
Like the RT-100 emergency receiver, the RT-202 CrewFinder MOB direction finder system monitors the international emergency frequency 121.500 MHz and triggers an alarm in the event a distress signal is received.
RT-300
Dual-Band Direction Finder System
The RT-300 is an all-purpose direction finder system that is designed for operation on two different frequency bands depending on the application. The RT-300 sets new benchmarks in terms of precision and reception sensitivity. Special algorithms permit fast, stable display of information.
![RT-300-AU-DCU-no-bg-768x549](https://i0.wp.com/rhothetaint.com/wp-content/uploads/slider9/RT-300-AU-DCU-no-bg-768x549.png?resize=734%2C525)
![RT-500-M DCU AU](https://i0.wp.com/rhothetaint.com/wp-content/uploads/2023/04/RT-500-M-DCU-AU.png?resize=734%2C489)
RT-500-M
SAR Direction Finder System for Rescue Missions at Sea
The RT-500-M is a multi-band direction finder system that operates on all frequency bands used for rescue missions. This direction finder automatically monitors the emergency frequencies 121.500 MHz, 243.000 MHz and 406.028 MHz (Cospas-Sarsat) as well as channel 16 of the marine band.
RT-458 Ramptester
RT-400, RT-500-M, RT-800 Performance Measurement Equipment
The Ramptester is a specialized equipment for testing and maintaining direction finder systems. It enables comprehensive testing of accuracy, sensitivity, and modulation on customer-selected channels.
![RT-500-M Ramptester](https://i0.wp.com/rhothetaint.com/wp-content/uploads/2020/11/RT-500-M-Ramptester.png?resize=300%2C394)
![RT-14400WP front & back 50%](https://i0.wp.com/rhothetaint.com/wp-content/uploads/2020/11/RT-14400WP-front-back-50.png?resize=350%2C344)
RT-14400WP Signal Generator
Portable RF Signal Generator
The RT-14400WP signal generator is a versatile RF/Microwave generator with an OLED display, covering 7 octaves from 35 to 4400MHz, and offering precise power output control.