Dr. Sheikh Md. Mahtabur Rahman
Licensed Amateur Radio Operator holding callsign S21AMF. Dedicated telecommunications educator, medical doctor, and RF systems enthusiast with an unwavering passion for spreading the science, emergency utility, and art of Amateur Radio to students, hobbyists, and emergency responders worldwide.
Our Educational Mission
The S21AMF Academy was founded to bridge the steep learning curve for aspiring amateur radio operators across Bangladesh and the global community. Whether preparing for national telecommunication regulatory exams (BTRC, FCC, CEPT, IARU), mastering high-speed Morse code auditory recognition, or setting up disaster-resilient off-grid radio communications, our curriculum is engineered for clarity, practical hands-on mastery, and zero guesswork.
Emergency Public Service & Ethics
Amateur Radio is first and foremost a service dedicated to public welfare and scientific advancement. When cell towers collapse during cyclones, earthquakes, and infrastructural blackouts, amateur operators provide the lifeline communications that save lives. Every lesson in our academy emphasizes ethical on-air etiquette, radio law compliance, and international safety protocols.
Courses Directed by S21AMF
Amateur Radio License Exam Mastery (Novice & General Class)
🎯 Course Certification Overview: License Examination Preparation An intensive, structured preparation curriculum tailored for candidates aiming to pass...
Amateur Radio Electronics & Circuit Fundamentals
⚡ Course Overview: Amateur Radio Electronics & Circuit Fundamentals Master the practical electronics that power amateur radio: DC and AC electricit...
RF Principles, Antenna Design & Feedline Dynamics
📡 Course Overview: RF Principles, Antenna Design & Feedline Dynamics From dipole wire physics to directional multi-element Yagis, ground-plane vert...
Morse Code (CW) Fast-Track & Sound Pattern Recognition
📻 Course Overview: Morse Code (CW) Fast-Track & Sound Pattern Recognition Acquire fluent acoustic Morse code recognition directly at 20 WPM using t...
Emergency Radio Communications & Disaster Protocol (EmComm & Civil Protection)
🆘 Course Mission: Emergency Radio Communications & Disaster Protocol (EmComm) When cellular networks crash and power grids sever during cyclones, c...
Digital Amateur Radio Modes (FT8, DMR, JS8Call & Packet Radio)
💻 Course Mission: Modern Digital Amateur Radio Protocols & Networks A comprehensive engineering guide on computer-radio soundcard interfacing, weak...