1.2 Authorized Frequencies, Band Plans & Power Limits

Authorized Frequencies, Band Plans & Power Limits

Once you earn your Technician license and your call sign appears in the FCC database, you are ready to transmit. But where are you allowed to transmit, and how much power can you use? The radio spectrum is heavily regulated to ensure different services—like aviation, military, broadcasting, and amateur radio—do not interfere with one another.

As a Technician class operator, you are granted specific "privileges" which define the frequency bands you can use, the types of signals (emissions) you can transmit, and the maximum power you can employ. Understanding these limits is critical; transmitting outside of your authorized frequencies is a direct violation of FCC rules.

VHF and UHF Privileges

The Technician class license is primarily focused on the Very High Frequency (VHF) and Ultra High Frequency (UHF) bands. These frequencies (everything above 30 MHz) are typically used for local and regional communication using line-of-sight propagation, repeaters, and even satellite communications.

As a Technician, you have full privileges on all amateur frequencies above 30 MHz. This means you can use any legal emission type (voice, digital, video, Morse code) and operate anywhere within these bands. The most common bands you will use include:

• 6 Meters (50 - 54 MHz): Often called the "magic band" because it occasionally supports long-distance (skywave) propagation.
• 2 Meters (144 - 148 MHz): The most popular band for local FM voice and repeater operation.
• 1.25 Meters (222 - 225 MHz): Another popular VHF band, slightly less crowded than 2 meters.
• 70 Centimeters (420 - 450 MHz): The most popular UHF band, heavily used for repeaters, digital modes (like DMR and C4FM), and satellite uplinks/downlinks.
• Microwave Bands (900 MHz, 1.2 GHz, 2.4 GHz, etc.): Used for advanced experimentation, mesh networks, and specialized communications.

High Frequency (HF) Privileges for Technicians

High Frequency (HF) bands range from 3 to 30 MHz. These frequencies are famous for their ability to bounce off the Earth's ionosphere, allowing for global communication. While HF is traditionally the domain of General and Extra class operators, Technicians do have limited but highly useful HF privileges.

Technicians are authorized to operate on four specific HF bands:

1. 80 Meters (3.525 - 3.600 MHz): CW (Morse Code) only.
2. 40 Meters (7.025 - 7.125 MHz): CW only.
3. 15 Meters (21.025 - 21.200 MHz): CW only.
4. 10 Meters (28.000 - 28.500 MHz): This is the crown jewel for Technicians. You are allowed to use CW and Data (digital modes like FT8) from 28.000 to 28.300 MHz, and SSB Voice from 28.300 to 28.500 MHz.

This means a Technician can absolutely talk around the world using voice on 10 meters, or use modern digital modes to work foreign countries, provided the solar cycle supports propagation on that band.

Power Limits

The FCC sets strict limits on how much power amateur stations can transmit. Power is measured in Watts, specifically Peak Envelope Power (PEP).

The General Rule

The absolute maximum power any amateur radio operator can use in the United States is 1500 Watts PEP.

However, there is an overarching rule that applies to EVERY transmission, regardless of your license class or the band you are on: You must use the minimum power necessary to carry out the desired communication. If you can make the contact with 5 watts, you should not be using 500 watts. This minimizes interference to other operators and services.

Technician Specific Power Limits

While Technicians can use up to 1500 watts on most VHF and UHF bands (with some specific geographical restrictions on certain bands like 420 MHz), they are severely restricted on their HF privileges.

On the 80m, 40m, 15m, and 10m HF bands, Technician class operators are limited to a maximum of 200 Watts PEP.

Emission Types

An emission type refers to the modulation method used to transmit information. Common emission types include:

• CW (Continuous Wave): Morse Code.
• Phone (Voice): Includes Amplitude Modulation (AM), Frequency Modulation (FM), and Single Sideband (SSB).
• Data: Digital modes like RTTY, PSK31, FT8, and packet radio.
• Image: Fast Scan Television (ATV) and Slow Scan Television (SSTV).

As a Technician, on VHF/UHF, you can use all these modes. On HF, you must strictly adhere to the sub-band allocations (e.g., only CW on 40 meters, only CW/Data/SSB on specific portions of 10 meters). You are not permitted to use FM voice on the 10-meter band.

Band Plans vs. FCC Rules

When you look at a chart of amateur frequencies, you will see it divided into specific uses: "FM Repeaters," "Simplex," "CW Only," "Satellite," etc. It is crucial to understand the difference between FCC rules and voluntary band plans.

For example, if you transmit SSB voice in the 2-meter "CW/SSB weak signal" segment, you are following the band plan. If you transmit FM voice in that same segment, you are violating the voluntary band plan and causing interference, which is bad practice, but technically not an FCC violation (since Techs have full privileges on all of 2m). However, if you transmit outside the 144-148 MHz band entirely, that is a direct FCC violation.

Primary vs. Secondary Allocation

The radio spectrum is crowded, and the FCC often allocates the same frequencies to multiple services. These are designated as either Primary or Secondary users.

• Primary Users: Have the absolute right to use the frequency. They are protected from interference.
• Secondary Users: Are allowed to use the frequency, but they must not cause harmful interference to primary users, and they must accept any interference from primary users.

In some bands (like 2 meters), amateur radio is the primary user. In other bands (like the 70 cm band, 420-450 MHz), the U.S. military and federal government radiolocation systems (radar) are the primary users, and amateur radio is secondary. If you are operating on 70 cm and hear a military radar sweeping across your frequency, you must accept the interference and you cannot demand they move.

Understanding these limits and allocations ensures you operate safely and harmoniously within the broader spectrum ecosystem.