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Digital transmissions are on the TV channels 2 to 60, this is the VHF and the UHF band. Some stations changed frequencies and added new channels.
In the USA: All commercial AM stations are assigned frequencies in the band 550-1620 KHz, in increments of 10 KHz. All commercial FM stations are assigned frequencies in the band 88-108 MHz, in increments of 100 KHz (0.1 MHz).
In the US, the AM broadcast band occupies 550 - 1,700 KHz, with assigned carrier frequencies spaced by 10 KHz. The FM broadcast band occupies 88 - 108 MHz, with assigned carrier frequencies spaced by 200 KHz (0.2 MHz) starting at 88.1 MHz.
In the USA: All commercial AM stations are assigned frequencies in the band 550-1620 KHz, in increments of 10 KHz. All commercial FM stations are assigned frequencies in the band 88-108 MHz, in increments of 100 KHz (0.1 MHz).
Also called a frequency guard band, a narrow frequency band between adjacent channels in multiplexing that is kept unused to prevent the channels from overlapping and causing crosstalk among modulated signals. Guard bands are commonly used in FDM but are also used in any data transmission method that relies on frequencies.
Basically, the difference lie on the frequency being used or supported. For GSM dual band phones, the frequencies that is can support are 900/1800 MHz or 850/1900 MHz; for tri-band phones, the frequencies are 850/1900/2100 or 850/1700/2100 or 900/1900/2100 MHz or 900/AWS/2100; and for quad-band phones, the frequencies are 850 / 900 / 1800 / 1900
Irish TV channels operate primarily on the Saorview platform for free-to-air broadcasting, utilizing the UHF band. Frequencies for Saorview range from 474 MHz to 858 MHz, covering various channels. Additionally, cable and satellite services like Virgin Media and Sky Ireland provide access to a broader range of channels, but their specific frequencies can vary. For accurate and up-to-date information, it's best to consult the official Saorview website or local broadcasting resources.
CB stands for citizen band radio is in many countries, and it is a system of short-distance radio communications between individuals on a selection of 40 channels within the 27-MHz (11 m) band.
The RT-CRC1 is a Cross Band Repeater Controller. It is just a controller that is used to build up a cross band repeater system with 2 units of handheld radio. The radio operating frequencies are NOT related to the RT-CRC1 controller. You can adjust the frequencies of the 2 connected handheld radios to any channels.
FM stations are assigned to a part of the VHF band. VHF only travels in straight lines. It cannot follow the earth's curvature or get past mountains. That limits the range. Its not FM thats the issue, but the assigned transmitter frequencies.
GPS Satellites use two frequencies 1.57542 GHz and 1.2276 GHz. AIS operates in the Marine VHF band using channels 87B, 161.975 MHz and channel 88B, 162.025 MHz
A: An amplifier while capable to amplify a whole range of frequencies sometimes some of this frequency are not needed or wanted in a specific range or [BAND] so it is designed to either pass this band or reject this band of frequencies.