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Emisi tersebar harus dikurangi sampai sekecil mungkin dengan pedoman yaitu pada frekuensi radio kerja di bawah 30 MHz; bagi daya pancar di bawah 100 Milliwatt, emisi tersebarnya harus ditekan paling sedikit:
40 dB
50 dB
60 dB
What is Ham Radio?
10 Mei 2007, Reporter: Yc0vm
A housewife in North Carolina makes friends over the radio with another ham in Lithuania. An Ohio teenager uses his computer to upload a digital chess move to an orbiting space satellite, where it"s retrieved by a fellow chess enthusiast in Japan. An aircraft engineer in Florida participating in a "DX contest" swaps his call sign and talks to hams in 100 different countries during a single weekend. In California, volunteers save lives as part of their involvement in an emergency response. And from his room in Chicago, a ham"s pocket-sized hand-held radio allows him to talk to friends in the Carolinas. This unique mix of fun, public service and convenience is the distinguishing characteristic of Amateur Radio. Although hams get involved for many reasons, they all have in common a basic knowledge of radio technology and operating principles, and pass an examination for the FCC license to operate on radio frequencies known as the "Amateur Bands." These bands are radio frequencies reserved by the Federal Communications Commission (FCC) for use by hams at intervals from just above the AM broadcast band all the way up into extremely high microwave frequencies. Listen to this spot, "What Is Ham Radio?"

Artikel lainnya
The IARU E-Letter Issue # 6
Super Low Frequency
Satu Lagi Fasilitas Repeater di Banten

DX Bulletin 52 ARLD052
ARLP050 Propagation de K7RA
:: Selengkapnya ::



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