Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.

Walkie Talkie 10 Codes These short, two way radio (or walkie talkie) codes are designed to make radio communications fast and easy. Try them on your Motorola two way radios today! That's more or less how digital radio works! 1 The transmitter sends program signals broken into fragments and coded in numbers (digits). 2 The transmitter sends each fragment many times to increase the chances of it getting through. It's simple. Radio waves travel unbelievably fastat the speed of light (300,000 km or 186,000 miles per second). Analog radio. Ocean waves carry energy by making the water move up and down. In much the same way, radio waves carry energy as an invisible, up-and-down movement of electricity and magnetism. The electromagnetic energy, which is a mixture of electricity and magnetism, travels past you in waves like those on the surface of the ocean. These are called radio waves. Like ocean waves, radio waves have a certain speed, length, and frequency. The speed is simply how fast the wave travels between two places. The wavelength is the distance between one crest (wave peak) and the next, while the frequency is the number of waves that arrive each second. Click the image to see a slightly bigger photo. 1 External, telescopic FM antenna: The one on this radio extends to about 30 cm (1 ft), which is plenty long enough to catch a good range of FM broadcasts. 2 Battery compartment: This radio is either battery or AC powered. Walkie Talkie 10 Codes. These short, two way radio (or walkie talkie) codes are designed to make radio communications fast and easy. Try them on your Motorola two way radios today! 10-1 = Receiving poorly. 10-2 = Receiving well. 10-3 = Stop transmitting. 10-4 = Message received. 10-5 = Relay message to ___. General and technical. 1 Keith's Radio Station: Broadcast, Satellite and Internet by John Allen Hendricks and Bruce Mims. 2 Build Your Own Transistor Radios: A Hobbyist's Guide to High-Performance and Low-Powered Radio Circuits Paperback by Ronald Quan. 3 How Radio Signals Work by Jim Sinclair. Although radio broadcasting is not quite as popular as it once was, the basic idea of wireless communication remains hugely important: in the last few years, radio has become the heart of new technologies such as wireless Internet, cellphones (mobile phones), and RFID (radio frequency identification) chips. 10-19 = Nothing for you, return to base 10-20 = My location is _____ 10-21 = Call by telephone 10-22 = Report in person to 10-23 = Stand by 10-24 = Completed last assignment 10-25 = Can you contact _____ 10-26 = Disregard last information 10-27 = I am moving to channel ____ 10-28 = Identify your station 10-29 = Time is up for contact 10-30 = Does not conform to FCC rules 10-32 = I will give you a radio check 10-33 = Emergency Traffic 10-34 = Trouble at this station 10-35 = Confidential ... Radio waves travel unbelievably fastat the speed of light (300,000 km or 186,000 miles per second). Analog radio Ocean waves carry energy by making the water move up and down. Query: how fast is radio communication
Radio waves travel unbelievably fast at the speed of 300,000 km or 186,000 miles per second.