Hodnocení tématu:
  • 0 Hlas(ů) - 0 Průměr
  • 1
  • 2
  • 3
  • 4
  • 5

Druhy komunikací - provozů - modulací
#1

Zdroj: https://en.wikipedia.org/wiki/List_of_am...adio_modes

Moreseovka
Continuous wave (CW)
Modulated continuous wave (MCW) is most often used by repeaters for identification.
Frequency shifting continuous wave (FSCW) dots and dashes are transmitted at different frequencies for easier reception in noisy conditions.
Prosigns for Morse code (prosigns)

Analogový hlas
Amplitude modulation (AM)
Double-sideband suppressed carrier (DSB-SC)
Independent sideband (ISB)
Single sideband (SSB)
Compatible sideband transmission, also called amplitude modulation equivalent (AME)
Frequency modulation (FM)
Phase modulation (PM)

Digitální hlas
APCO P25 - Found in repurposed public safety equipment from multiple vendors. Uses IMBE or AMBE CODEC over FSK.
D-STAR - Open specification with proprietary vocoder system available from Icom, Kenwood, and FlexRadio Systems. Uses AMBE over GMSK with VoIP capabilities.
DMR - Found in both commercial and public safety equipment from multiple vendors. Uses AMBE codec over a FSK modulation variant with TDMA.
System Fusion - Open specification with proprietary vocoder system available from Yaesu. Uses AMBE CODEC with C4FM modulation.

Obrázky

Text a data

ostatní

Michal Stod administrátor tohoto fóra - pokud máte problém nebo nápad nebo snad pochvalu, napište to do sekce https://forum.svysilackou.cz/forumdisplay.php?fid=26
Odpovědět


Přejít na fórum:


Uživatel(é) prohlížející tohle téma: 2 host(ů)