A step-by-step guide to connecting an external antenna via an RP-SMA Male connector to improve 4G signal: choosing a 50-ohm cable, reverse polarity, 2×2 MIMO, antenna orientation and checking RSRP/SINR.
A comparison of narrowband antennas and Log Periodic Dipole Antennas (LPDAs): choosing the right antenna based on whether you need peak efficiency at a narrow frequency or stable performance across a wide spectrum.
A detailed comparison of infrared (IR) versus full-color night vision technologies, helping you choose the right camera based on your priority: maximum range or colour identification.
Open firmware OpenIPC made digital FPV affordable: HD picture, low latency and efficient H.265 on inexpensive hardware. How it works and where it’s used — from civilian tasks to reconnaissance and observation.
The eye sees an FPV seconds before impact. The radio spectrum sees it much earlier — the moment the video transmitter switches on. Why spectrum reconnaissance became its own discipline, and what intercepted video actually gives the operator.
A weak FPV signal, noise and image dropouts usually come not from the receiver but from wrong antenna placement. Practical principles: a clear zone around the antenna, vertical polarization, height, the Fresnel zone, spacing from GPS on a UAV, and cooling.