âm trần panasonic

MW DX, short for mediumwave DXing, is the hobby of receiving distant mediumwave (also known as AM) radio stations. MW DX is similar to TV and FM DX in that broadcast band (BCB) stations are the reception targets. However, the nature of the lower frequencies (530 – 1710 kHz) used by mediumwave radio stations is very much different from that of the VHF and UHF bands used by FM and TV broadcast stations, and therefore involves different receiving equipment, signal propagation, and reception techniques.

View More On Wikipedia.org