Short wave as in shortwave radio just means waves of a certain wavelength .
The wave is usually made by ovilators and tuned circuits.
In a shortwave radio you generally tuned the final resonating circuit to the specific frequency .
Now the radio probably uses PLL technology to generate the wave
Bluetooth, WiFi, and remote-lock car keys do that.
Cell phone transmission uses shortwaves (120 MHz to 1000MHz) to transmit its signals, these waves are Electro-magnetic waves (just like light); thus, they travel at the speed of light: 299,792,458 m/s or 670,616,629 mph.
First, the BBC World Service has many different ways to get in touch or to listen to it. It broadcasts in 28 languages, online, on the shortwaves, and on the radio. As for when it broadcasts news programs in Kinyarwanda, I enclose a link to the BBC's times for such broadcasts, as well as information about when you can listen.
Shortwave radio operates between the frequencies of 3,000 kHz (3 MHz) and 30,000 kHz (30 MHz). You could also describe the waves as high frequency. Shortwaves can travel farther because they mass through matter with much less resistance.
In a free market economy, you the owner gets to chose who it is produced by, how it is produced and what is prdouced. In a command economy, the government chooses how it is produced, who it is produced by and what is produced. A mixed economy is mixed with command and free market.
Where should products be produced
Mass produced foods are foods that are produced by the thousands.
What is to be produced?
it is produced by god
What did meatpacking produced?
It is produced in the placenta.
they are produced in gills