What are simplex frequencies?
Terminology. Simplex – In the amateur radio context, simplex operation means the radio stations are communicating with each other directly, on the same frequency. Both stations take turns transmitting and receiving on the same frequency with no repeater or other device in between.
What frequency does 2 meter use?
The 2-meter amateur radio band is a portion of the VHF radio spectrum that comprises frequencies stretching from 144 MHz to 148 MHz in International Telecommunication Union region (ITU) Regions 2 (North and South America plus Hawaii) and 3 (Asia and Oceania) and from 144 MHz to 146 MHz in ITU Region 1 (Europe, Africa.
What is the national calling frequency for FM simplex operations in the 2 meter band?
146.520MHz
What is the national calling frequency for FM simplex operations in the 2 meter band? See the ARRL Band Plan for 2m. Note that 146.520MHz is the “National Simplex Calling Frequency” and there is another frequency referred to as simply the “National Calling Frequency”.
What band is 220 MHz?
The 1.25-meter, 220 MHz or 222 MHz band is a portion of the VHF radio spectrum internationally allocated for amateur radio use on a primary basis in ITU Region 2, and it comprises frequencies from 220 MHz to 225 MHz.
What band is 222mhz?
What is the National simplex frequency (National calling frequency)?
Across all of North America, the National Simplex Frequency (also referred to as the calling frequency) is 146.52 MHz. In areas that use 15-kHz channels, the adjacent channels are 146.535, 146.550, 146.565 MHz, etc. moving upward.
What is the frequency band of 440 simplex?
2 meter, 440 Simplex Frequency Band Frequency Band Frequency 2 m Simplex 146.400 Mhz 440 Simplex 445.9125 Mhz 2 m Simplex 146.415 Mhz 440 Simplex 445.925 Mhz
How do I choose the right simplex frequency?
Choosing an appropriate simplex frequency can be a little tricky, since it depends on whether your region uses the 15-kHz or 20-kHz channel spacing. Across all of North America, the National Simplex Frequency (also referred to as the calling frequency) is 146.52 MHz.
What is the start/end frequency range of the ARRL simplex?
I also found that the start/end frequencies of the ARRL simplex frequency range are 30kHz apart from the next frequency range for repeater inputs/outputs. Notice the 20kHz spacing between channels for the 1.25M band.