Radio: Difference between revisions
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=== Le bande === | === Le bande === | ||
==== ITU ==== | |||
{| class="wikitable" style="text-align:center" | {| class="wikitable" style="text-align:center" | ||
| Line 37: | Line 39: | ||
| 12 || [[Tremendously high frequency|THF]] || 300 to 3000 GHz || 0.1 to 1 mm | | 12 || [[Tremendously high frequency|THF]] || 300 to 3000 GHz || 0.1 to 1 mm | ||
|- | |- | ||
|} | |||
==== Ham === | |||
==== Civili ==== | |||
{| class="wikitable" style="text-align:center;" | |||
|- bgcolor="#E8EAF6" | |||
| '''Banda''' || '''Utilizzo''' || '''Estensione''' | |||
|- | |||
| [[banda cittadina]] || amatoriale || 26,965 - 27,405 MHz | |||
|- | |||
| [[banda 43 MHz]] || servizi vari || 43,300 - 43,5875 MHz | |||
|- | |||
| [[Low Power Devices|LPD]] || privato LPD || 433,075 - 434,775 MHz | |||
|- | |||
| [[Low Power Devices|LPD SRD]] || privato LPD || 868,00625 - 869,99375 MHz | |||
|- | |||
| [[PMR 446]] || privato PMR446 || 446,00625 - 446,09375 MHz | |||
|- | |||
| [[PMR 446|PMR 446 digitale]] || privato PMR446 || 446,103125 - 446,196875 MHz | |||
|} | |||
==== Broadcast ==== | |||
{| class="wikitable" style="text-align:center;" | |||
|- bgcolor="#E8EAF6" | |||
| '''Banda''' || '''Utilizzo''' || '''Estensione''' | |||
|- | |||
| [[onde lunghe]] || radio AM || 153 – 279 kHz | |||
|- | |||
| [[onde medie]] || radio AM || 525 – 1615 kHz | |||
|- | |||
| [[onde corte]] || radio AM || 2310 kHz - 30 MHz | |||
|- | |||
| banda radio FM || radio FM ||87,5 - 108 MHz | |||
|- | |||
| [[Digital Audio Broadcasting|DAB]] banda L || [[radio digitale]] || 1452 - 1492 MHz | |||
|} | |} | ||
Revision as of 14:18, 3 July 2015
Lo spettro elettromagnetico
la lunghezza d'onda e la frequenza
atmosfera
Lo spettro radio
Le bande
ITU
| Band Number | Symbols | Frequency Range | Wavelength Range† |
|---|---|---|---|
| 4 | VLF | 3 to 30 kHz | 10 to 100 km |
| 5 | LF | 30 to 300 kHz | 1 to 10 km |
| 6 | MF | 300 to 3000 kHz | 100 to 1000 m |
| 7 | HF | 3 to 30 MHz | 10 to 100 m |
| 8 | VHF | 30 to 300 MHz | 1 to 10 m |
| 9 | UHF | 300 to 3000 MHz | 10 to 100 cm |
| 10 | SHF | 3 to 30 GHz | 1 to 10 cm |
| 11 | EHF | 30 to 300 GHz | 1 to 10 mm |
| 12 | THF | 300 to 3000 GHz | 0.1 to 1 mm |
= Ham
Civili
| Banda | Utilizzo | Estensione |
| banda cittadina | amatoriale | 26,965 - 27,405 MHz |
| banda 43 MHz | servizi vari | 43,300 - 43,5875 MHz |
| LPD | privato LPD | 433,075 - 434,775 MHz |
| LPD SRD | privato LPD | 868,00625 - 869,99375 MHz |
| PMR 446 | privato PMR446 | 446,00625 - 446,09375 MHz |
| PMR 446 digitale | privato PMR446 | 446,103125 - 446,196875 MHz |
Broadcast
| Banda | Utilizzo | Estensione |
| onde lunghe | radio AM | 153 – 279 kHz |
| onde medie | radio AM | 525 – 1615 kHz |
| onde corte | radio AM | 2310 kHz - 30 MHz |
| banda radio FM | radio FM | 87,5 - 108 MHz |
| DAB banda L | radio digitale | 1452 - 1492 MHz |