The technology works; I recommend setting the frequency appropriately. As far as I know, amateur radio frequencies currently cannot be used for playing music, apparently due to some restrictions.
General low-power (short-range) radio transmission devices:
Operating frequency: 24.00-24.25 GHz
Using frequency: 2400-2483.50 MHz
Operating frequency: 40.66-40.70 MHz
Usage frequency: Exclude frequencies outside the range of 315 kHz to 30 MHz, excluding devices of classes A, B, and C.
Operating frequencies: 6.765-6.795 MHz, 13.553-13.567 MHz, 26.957-27.283 MHz
Usage frequencies: 1.7-2.1 MHz, 2.2-3.0 MHz, 3.1-4.1 MHz, 4.2-5.6 MHz, 5.7-6.2 MHz, 7.3-8.3 MHz, 8.4-9.9 MHz
The operating frequency range is: 9 kHz - 190 kHz
Universal Wireless Remote Control Device
Operating frequency: 470-566 MHz, 614-787 MHz
Devices such as wireless microphones and consumer-grade radio frequency (RF) measurement instruments.
Usage frequencies: 87-108 MHz, 75.4-76.0 MHz, 84-87 MHz, 189.9-223.0 MHz, 470-510 MHz, 630-787 MHz
Biomedical remote monitoring equipment
Operating frequencies: 174-216 MHz, 407-425 MHz, 608-630 MHz
Simulated wireless telephone
Landline transmission frequency: 45.000 - 45.475 MHz
Mobile phone transmission frequency: 48.000 - 48.475 MHz
2.4 GHz band digital cordless phone
Operating frequency: 2400.0 – 2483.5 MHz
Wireless remote control devices specifically designed for cranes or conveyors.
Usage frequencies: 230.700 MHz, 223.700 MHz, 230.975 MHz, 223.975 MHz, 231.600 MHz, 224.600 MHz, 232.325 MHz, 225.325 MHz, 230.100 MHz, 223.100 MHz, 232.025 MHz, 225.025 MHz
Industrial wireless remote control devices
Usage frequencies: 418.950 MHz, 418.975 MHz, 419.000 MHz, 419.025 MHz, 419.050 MHz, 419.075 MHz, 419.100 MHz, 419.125 MHz, 419.150 MHz, 419.175 MHz, 419.200 MHz, 419.250 MHz, 419.275 MHz
Wireless data transmission device
Usage frequencies: 228.050 MHz, 228.100 MHz, 228.200 MHz, 228.275 MHz, 228.425 MHz, 228.575 MHz, 228.600 MHz, 228.800 MHz, 223.150 MHz/230.150 MHz, 223.250 MHz/230.250 MHz, 223.275 MHz/230.275 MHz, 224.050 MHz/231.050 MHz, 223.350 MHz/230.350 MHz, 224.250 MHz/231.250 MHz
Wireless transmission equipment specifically designed for electronic load cells.
Usage frequencies: 223.300 MHz, 224.900 MHz, 230.050 MHz, 233.050 MHz, 234.050 MHz, 450.0125 MHz, 450.0625 MHz, 450.1125 MHz, 450.1625 MHz, 450.2125 MHz
Wireless control devices for various civilian equipment
Operating frequencies: 314–316 MHz, 430-432 MHz, 433.00-434.79 MHz, 779-787 MHz
Model, toy wireless remote control devices
Frequency range for toy boats/car models: 26–27 MHz band, 40 MHz band
Frequency of use for empty channel: 40 MHz band, 72 MHz band
Walkie-talkies:
Operating frequency: 409 MHz band
Vehicle Distance Radar
The operating frequency is: 76-77 GHz
Additionally, I am citing an article from the Qinghai Provincial Radio Management Office.
Amateur radio enthusiasts have a universally recognized set of rules and regulations for radio communication, such as using only the internationally assigned call sign as the identifier for the radio station. When communicating, you must announce your call sign and cannot use other names or codes in its place. The content of the communication should not involve politics, religion, profit, or privacy, and should not use coded language, slang, or uncivilized language. It should also not be used for entertainment, such as making fun of others or playing music. If these rules are not followed, if you do not learn about the relevant technical and legal knowledge, and if you communicate by using your own call sign instead of the legally recognized one, use vulgar language, make jokes, or play music; deliberately interfere with others' equipment; violate the rules and conventions in terms of frequency usage and etiquette; this will only put yourself in a position where everyone despises you. Relevant authorities will never ignore such individuals.
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