When Hurricane Maria toppled power lines and knocked out communication to Puerto Rico in 2017, Dennis Boyé got on his ham radio to connect with someone on the island who set up a makeshift ...

Coil64 is inductance coil calculator, that allows to calculate the single-layer and multi-layer air core inductors, the ferrite core inductors or chokes, planar coils on PCB etc.

The search will incorporate advanced technology, particularly Weak Signal Propagation Reporter (WSPR), which utilizes low-power radio transmissions commonly used by amateur radio enthusiasts ...

CONVERTS AC TO DC The switching DC power supply features AC-DC converter variable linear / regulated design Provides reliable AC-to-DC power conversion w/ constant source of DC voltage Works w ...

They make an ideal first transceiver for a new licensee, a handy portable for any radio amateur, and an inexpensive basis for UHF or VHF experimentation. Unfortunately with the low cost comes ...

[William Franzin] decided it would be particularly cool to make the service available over ham radio – and that’s exactly what he did. [William] got the idea for this project after first ...