1, the amateur radio frequency range allowed by the state includes a number of frequency bands, such as 18002000kHz, 35003900kHz, 70007200kHz and so on. These frequency bands are divided in accordance with the Regulations of the People's Republic of China on the Division of Radio Frequencies and other relevant regulations to ensure the orderly conduct of amateur radio activities.
2, the "Regulations of the People's Republic of China on the Division of Radio frequencies" stipulates that the frequencies that can be used by amateur services are: 1800-2000kHz. 3500-3900khz. 7000-7200khz. 10100-10150khz (minor). 14000-14350khz. 18068-18168khz. 21000-21450 KHZ. 24890-24990khz.
3, China's amateur radio operators have a clear frequency range, according to the "People's Republic of China radio frequency division Regulations", these frequencies include: 1800-2000khz, 3500-3900khz, 7000Change the part.
Break through -storm the front. This is Cross Fire radio English, hope everyone support! fire in the hole. Watch out for grenades. head shot. They say good shot. double kill when you kill two people, triple kill, more than four is Unbelieveable! I can't believe it, really NB...
Alpha, Bravo, Charlie, Delta,Echo, Foxtrot, Golf, Hotel, India, Juliet, Kilo, Lima, Mike, November, Oscar, Papa,Quebec, Romeo, Sierra, Tango，制服，Victor, Whiskey， x射线，Yankee, Zulu。
FSK modulation is a digital modulation method. FSK, or frequency shift keying modulation, is a modulation technique commonly used in digital communication. It uses the frequency change of the carrier to transmit digital information. In FSK modulation, the logical states "1" and "0" in the binary data correspond to different carrier frequencies. Specifically, it achieves the transmission of digital information by changing the frequency of the carrier to represent different digital signal states.
FSK modulation, full name frequency shift modulation, is a binary digital signal to control the change of carrier frequencyIn order to achieve wireless transmission of digital information. In 2FSK, the 0 signal corresponds to the carrier frequency f1, while the 1 signal corresponds to the carrier frequency f2, and the switch between the two carrier frequencies is instantaneous. When sent, different digital messages are represented by quickly switching frequencies, a strategy that takes advantage of frequency differences to encode.
FSK stands for Frequency shift Keying. FSK is a common way of encoding information and is commonly used in digital communication systems. The following is a detailed explanation of FSK: The basic principle of FSK: FSK is a digital modulation technology that represents different logical values through different frequencies.For example, a particular frequency might represent the number "1" while a different frequency would represent the number "0."
In the field of information transmission, FSK, or frequency shift keying, is a long-established and widely used modulation method. It has the advantages of simple implementation, good anti-noise and anti-attenuation performance, especially suitable for medium and low speed data transmission. The working principle of FSK is to use digital signals to modulate the carrier frequency, such as 2FSK, which can be regarded as the superposition of ASK signals of two different carrier frequencies.