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What radio frequency do airlines use?
In the United States, VHF civil aircraft communications are placed in the 100 MHz band and allocated 760 channels within the range from 118.0-136.975 MHz. As a pilot, every frequency you talk on will fall within this range.
Which frequency is used for aviation communication?
Spectrum Engineering & Policy – Radio Frequency Bands Supporting Aviation
| Frequency | Band Name |
|---|---|
| 118 – 137 MHz | VHF Air / Ground Communications |
| 138 – 150.8 & 162 – 174 MHz | Fixed, Mobil |
| 225 – 328.6 & 335.4 – 400 MHz | UHF Air / Ground Communications (U.S. Military) |
| 328.6 – 335.4 MHz | ILS Glide Slope |
What radio frequency do helicopters use?
123.025 MHz
Use of air to air frequencies for aircraft and helicopters. In the FCC rules 47 CFR 87.187(j) it states: The frequency 122.750 MHz is authorized for use by private fixed wing aircraft for air-air communications. The frequency 123.025 MHz is authorized for use by helicopters for air-air communications.
What kind of signals are used to intercept aircraft?
The intercepting aircraft uses series 2 signals for intercepting aircraft. Understood. While interception of civilian aircraft is a last resort, interception is often the only means available to identify an aircraft that have not filed a flight plan and/or have no transponder and can not be contacted.
What are the standard procedures for aircraft interception?
Procedures for interception of civilian aircraft in real life There is a set of standard procedures defined by ICAO that includes radio communication and visual signals both for night and day. There are procedures both for the intercepting aircraft and for the intercepted aircraft.
How can I contact an aircraft that has been intercepted?
The intercepting aircraft should try to contact the intercepted aircraft using 121.5 MHz, using the call signs Interceptor , Intercepted aircraft and Intercept control. If that fails the intercepting aircraft should try the ATC frequencies or try to contact the intercepted aircraft through the ATC.
What are the Basic countermeasures against interception?
Basic countermeasures against interception include frequent changing of radio frequency, polarization, and other transmission characteristics. An intercept aircraft could not get off the ground if it had to carry antennas and receivers for every possible frequency and signal type to deal with such countermeasures.