A new video has proposed an “answer” to the problem of requiring large antennas to receive very low frequency (VLF) radio signals.
The solution employs a loop antenna, a type of antenna that has been in use since the early 20th century, but the author’s approach uses a matching transformer, modelling and practical results to back up the idea.
Whilst transformers do introduce loss, the author notes that everything is a trade-off, and the benefits still outweigh the negatives.
The video showcases how to build the antenna, which the author claims is simple to duplicate, and boasts good performance.
VLF radio has long been a area of interest for radio enthusiasts, and its use dates back to early radio, with some pessimists suggesting that its use today may even accidental help space exploration.
