About

Hello, I’m Jonathan K. Fredlund — also known in online projects as AstroEldravn.

I bridge the worlds of cybersecurity, SATCOM, and space systems with a deep focus on operational resilience, spectrum defense, and modern IT practices. My professional foundation comes from serving in the U.S. Army Signal Corps, where I’ve instructed and operated on advanced tactical communication systems such as the Hawkeye III Lite, Phoenix-E, TRILOS 50m mast, and SMART-T, across Ka, Ku, X, and C-band environments. Apart from the SATCOM equipment management I was an operator and technician on several Cisco Networking systems. This hands-on experience in high-demand, denied, and contested domains fuels my broader mission: integrating cybersecurity, networking, and spectrum awareness into both military and civilian space-oriented operations.

Currently, I’m pursuing a Master of Science Degree in Information Technology – Cybersecurity at the Florida Institute of Technology, known commonly as Florida Tech, building on my B.S. in Cybersecurity Management & Policy from UMGC and certifications including CompTIA Security+ and Network+, with ongoing work toward CCNA and ISC² Certified in Cybersecurity (CC). I thrive on continual learning, blending network administration, penetration testing, SDR (software-defined radio), and automation into both my professional role and my homelab projects. Additionally, I am focusing on certifications surrounding A.I. Bridging my professional skills with my hobbies, I’ve taken on projects that push my curiosity in RF theory, spectrum analysis, and satellite communications into hands-on experimentation. Recently, I’ve been working with a TinySA spectrum analyzer and using SDR platforms like SDR++ paired with custom-built antennas to capture and decode satellite signals, including weather imagery. These hobbyist projects not only deepen my understanding of signal environments and electromagnetic spectrum operations, but also reinforce the practical side of my professional work in SATCOM and cybersecurity. By experimenting in the lab and field with real RF data, I’m able to connect the dots between academic learning, military-grade systems, and emerging technologies.

Beyond the technical, I’m deeply interested in space systems, network infrastructure, cybersecurity, and creative exploration. These threads come together in this site, where I share:

  • Projects – from SDR intrusion detection concepts to homelab network automation.

  • Articles & Research – including cybersecurity for spaceborne IoT, tactical networks, and modernization challenges.

  • Case Studies & Write-Ups – practical insights drawn from real-world teaching, military systems, and experiments.

My long-term vision is to stand at the intersection of cybersecurity, SATCOM, and space exploration where I can help to shape secure communication pathways for the next frontier, while also building a balanced life rooted in curiosity, exploration, and family.

If any of this resonates, feel free to explore my work here or connect with me on LinkedIn. Be sure to also check out my GitHub repositories for a deeper dive into the projects I’m either working on or prototyped.