Radio amateri - opšta tema

Posto sam marine radio koristio na moru (jedrenje). Pade mi napamet, verovatno to vazi i na reci. Evo izvadka po preporukama:

Pridržavati se ograničenja snage predajnika:
  • Za komunikaciju brod-brod i brod-obala: do 25 W.
  • Za komunikaciju sa obalom: do 1 W.

Glavne VHF brodske frekvencije u Srbiji​

KanalFrekvencijaTip komunikacijeNapomena
16156.800 MHzHitne i sigurnosne komunikacijeGlobalno rezervisan kanal za hitne pozive
13156.650 MHzSigurnost plovidbeKomunikacija između brodova za navigaciju
06156.300 MHzKomunikacija sa avionimaKoordinacija SAR operacija
09156.450 MHzPozivi i koordinacijaPreporučeni kanal za pozive
72156.625 MHzKomunikacija sa obalomKoristi se za komunikaciju sa obalnim stanicama
73156.675 MHzKomunikacija sa obalomAlternativni kanal za komunikaciju sa obalom
 
Primecujem da je kod nas popularan: PMR (446) - to je UHF band

Private Mobile Radio (PMR):
  • This frequency range is often used for Private Mobile Radio (PMR) services, which provide communication for businesses, industries, and organizations. These are typically land mobile radio systems used for voice communications, often for short-range communication between individuals or teams. It’s commonly used by companies with fleets, security agencies, and emergency services.
  • In some countries, these frequencies are allocated for PMR446 devices, which are walkie-talkie-style radios used for short-range communication without the need for a license.

PMR446 Channels and Frequencies (Europe):​

ChannelFrequency
1446.00625 MHz
2446.01875 MHz
3446.03125 MHz
4446.04375 MHz
5446.05625 MHz
6446.06875 MHz
7446.08125 MHz
8446.09375 MHz
9446.10625 MHz
10446.11875 MHz
11446.13125 MHz
12446.14375 MHz
13446.15625 MHz
14446.16875 MHz
15446.18125 MHz
16446.19375 MHz

Key Notes:​

  • Frequency Range: The PMR446 channels are all located in the 446 MHz band (between 446.0 MHz and 446.2 MHz).
  • License-Free: PMR446 radios are typically license-free in many European countries, allowing users to communicate without the need for special licenses. However, power output is usually limited (typically up to 0.5 watts) to maintain simplicity and prevent interference.
  • General Use: PMR446 radios are typically used in personal, family, or business applications for short-range communication (up to 3-5 km, depending on the environment).
Obicno se prijavljuje na kanal 6 (slucajno otkrio, nisam imao pojma)
Razmak izmedju kanala 12.5 kHz
 
FRS, GMRS

FRS = Family Radio Service
GMRS = General Mobile Radio Service

ove pominjem zajedno jer mi se cini da obicno dolaze u kombinaciji
uglavnom su mali voki-toki obicno se kupuju u parovima
namena je lokalna komunikacija do recimo 2Km mada sam ja uspevao sa nekih visih mesta da dobacim prilicno i zacudjujuce daleko
moze da se koristi bez licence ako su male snage 500mW (na gmrs kanalima ili 0.5W ili 2-5W) - ovo naravno vazi za toki-voki, ne za radio stanice, uz licencu GMRS moze do 50W

FRS and GMRS Channels and Frequencies


  1. FRS Channels (Family Radio Service):
    • Channel 1: 462.550 MHz
    • Channel 2: 462.575 MHz
    • Channel 3: 462.600 MHz
    • Channel 4: 462.625 MHz
    • Channel 5: 462.650 MHz
    • Channel 6: 462.675 MHz
    • Channel 7: 462.700 MHz
    • Channel 8: 467.550 MHz
    • Channel 9: 467.575 MHz (This is the emergency channel)
    • Channel 10: 467.600 MHz
    • Channel 11: 467.625 MHz
    • Channel 12: 467.650 MHz
    • Channel 13: 467.675 MHz
    • Channel 14: 467.700 MHz
    • Channel 15: 467.725 MHz
    • Channel 16: 467.750 MHz
    • Channel 17: 467.775 MHz
    • Channel 18: 467.800 MHz
    • Channel 19: 467.825 MHz
    • Channel 20: 467.850 MHz
  2. GMRS Channels (General Mobile Radio Service):
    • Channel 1: 462.550 MHz
    • Channel 2: 462.575 MHz
    • Channel 3: 462.600 MHz
    • Channel 4: 462.625 MHz
    • Channel 5: 462.650 MHz
    • Channel 6: 462.675 MHz
    • Channel 7: 462.700 MHz
    • Channel 8: 467.550 MHz
    • Channel 9: 467.575 MHz (This is the emergency channel)
    • Channel 10: 467.600 MHz
    • Channel 11: 467.625 MHz
    • Channel 12: 467.650 MHz
    • Channel 13: 467.675 MHz
    • Channel 14: 467.700 MHz
    • Channel 15: 467.725 MHz
    • Channel 16: 467.750 MHz
    • Channel 17: 467.775 MHz
    • Channel 18: 467.800 MHz
    • Channel 19: 467.825 MHz
    • Channel 20: 467.850 MHz
  3. Shared Frequencies:
    • Some of the GMRS and FRS frequencies overlap. However, GMRS requires a license from the FCC (Federal Communications Commission) to transmit, while FRS does not. (napomena: pretpostavljam da kod nas mora da se uzme licenca ako je predajnik vece snage GMRS moze do 50W )
 
Није исто

На радио аматерском опсегу се одржавају везе и ако су услови тешки онда се ради телеграфијом

kad su uslovi bas jako teski pokrenes udaljenu stanicu preko interneta i iz Evrope komuniciras radiom sa Novim Zelandom :)

Na primer HamSphere https://hs50.hamsphere.com

1745278414373.png


mind-boggling ;)
 

Back
Top