Lower limit of airport base station communication

Federal Communications Commission FCC 19-53

ntrol communications over the entire band. Specifically, we propose to amend the part 87 frequency table in section 87.173(b), and section 87.263(a) in subpart I regarding aeronautical

Section 2. Controlled Airspace

Pilots approaching an airport with Class C service should be aware that if they descend below the base altitude of the 5 to 10 mile shelf during an instrument or visual approach, they may

Flying Base Station Channel Capacity Limits: Dependent on

We introduce and analyze the flying base station channel capacity, which is the capacity or the upper-bound limit of the reliable communication rate that the communication

PHAK Chapter 15

Unless otherwise authorized, each aircraft must establish two-way radio communications with the ATC facility providing air traffic services prior to entering the airspace and thereafter maintain

eCFR :: 47 CFR 24.232 -

§ 24.232 Power and antenna height limits. (a) (1) Base stations with an emission bandwidth of 1 MHz or less are limited to 1640 watts equivalent isotropically radiated power (EIRP) with an

Aeronautical Frequency Committee (AFC) VHF Ground

Use maximum antenna separation to provide the greatest transmitter isolation with co-located base stations, minimizing the risk of transmitter intermodulation (IM).

Section 2. Controlled Airspace

Pilots approaching an airport with Class C service should be aware that if they descend below the base altitude of the 5 to 10 mile shelf during an

Base Station Antenna Height Recommendations

Explore base station antenna heights for optimal coverage in urban and rural settings according to ITU-R P.1410 standards.

COMMUNICATIONS RANGE OF AVIATION BAND BASE

Graph 1 shows that for lower altitudes the communication range is "radio horizon limited", while at higher altitudes it is "signal strength limited". Thus increasing transmitter power is most

FCC and FDA Guidelines

Certain public entities have demonstrated concern over RF exposure, including the International Fire Fighters Association and the European Parliament, which voted to restrict both base

FCC and FDA Guidelines

Certain public entities have demonstrated concern over RF exposure, including the International Fire Fighters Association and the European

Base Station Antenna Height Recommendations Explained

Explore base station antenna heights for optimal coverage in urban and rural settings according to ITU-R P.1410 standards.

AC 90-66C

This AC calls attention to regulatory requirements, recommended operations, and communications procedures for operating at an airport without a control tower or an airport

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4 FAQs about Lower limit of airport base station communication

Why can't aircraft communicate with a base station?

Since vhf radio signal travel along a “line of sight”, aircraft that are behind hills or beyond the radio horizon (due to earth curvature) cannot communicate with ground a station, regardless of other favorable conditions. The next most significant factor is base station antenna height.

Does increasing base station transmitter power increase radio range?

Increasing base station transmitter power will nearly always increase the communications range, but usually by less than anticipated. For aircraft at altitudes below 8000 feet agl, even a relatively low power transmitter will reach the radio horizon with an acceptable signal level.

Why do high altitude aircraft need more transmitter power?

Graph 1 shows that for lower altitudes the communication range is “radio horizon limited”, while at higher altitudes it is “signal strength limited”. Thus increasing transmitter power is most effective for high altitude aircraft at relatively great distances from the base station.

How do I establish two-way radio communication in Class D airspace?

Two-way radio communication must be established with the ATC facility providing ATC services prior to entry and thereafter maintain those communications while in the Class D airspace. Pilots of arriving aircraft should contact the control tower on the publicized frequency and give their position, altitude, destination, and any request (s).