Investigator515 looks at the compromised, Cold War era, IBM Selectric

Exploring Espionage: The IBM Selectrix

Investigator515 looks at the history and development of the Shipping Container in the latest What The Tech?!

What The Tech?! Shipping Containers

Investigator515 looks at part two of the Cubesat Simulator. 

Project sponsered by PCBWay

Space In A Box: The Battery Board

Investigator515 explores sub-surface intelligence gathering platforms like USS Parche (SSN-683)

Silent Wars: USS Parche (SSN-683)

Investigator515 looks at SCADA vulnerabilities and alternative roles in Cyber. 

SCADA Over Radio: Vulnerabilities in RF Links

Investigator515 looks at the role of the preamplifier in an SDR recieve station. 

Radio Hackers: Preamplifiers & LNA

Investigator515 looks at the history and development of the Ballpoint pen. 

What The Tech?! Ballpoint Pens

Investigator515 looks at the USS Pueblo incident.

Exploring Espionage: USS Pueblo (AGER-2)

Investigator515 looks at the HackRF H4 Portapack and the Module Development Kit (MDK) for the HackRF One.

HackRF One: The Portapack H4

Investigator515 explores the US, Cold War era, Sound Surveillance System (SOSUS) used for tracking Soviet submarines. 

SOSUS: The Cold War Era Sound Surveillance System

Investigator | OSINT Analyst | Crypto Writer | Also publishing via: https://investigator515.substack.com | investigator515.bsky.social


Investigator515

5 Nov 2025

149

7 min read

1 Nov 2025

162

7 min read

30 Oct 2025

151

6 min read

27 Oct 2025

148

5 min read

25 Oct 2025

151

5 min read

21 Oct 2025

153

6 min read

18 Oct 2025

4

6 min read

12 Oct 2025

150

7 min read

7 Oct 2025

156

6 min read

5 Oct 2025

157

7 min read