The FCC sets maximum transmitting power limits (Peak Envelope Power) for each amateur frequency band. The given frequency of 10.140 MHz (wavelength = 300/10.140 = 29.58 m) falls within the 30 meter band. The maximum transmitting power allowed on this band is 200 watts PEP output.

Refer to FCC Part: [97.313(c)(1)]

Link to ARRL color chart: US Amateur Radio Bands

Link to ARRL text based band table (more accessible): US Amateur Radio Frequency Allocations

Silly Hint: It's 10:00 - do two know where your children are?

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Tags: transmit power 30 meters arrl chapter 3 arrl module 9

The FCC sets maximum transmitting power limits (Peak Envelope Power) for each amateur frequency band. The maximum transmitting power allowed on the 12-meter band is 1500 watts PEP output.

Refer to FCC Part: [97.313(a), (b)]

Link to ARRL color chart: US Amateur Radio Bands

Link to ARRL Vertical chart (2020-01-22): http://www.arrl.org/files/file/Regulatory/Band Chart/Band Chart.pdf

Link to ARRL text-based band table (more accessible): US Amateur Radio Frequency Allocations

Tip: for all commonly used bands (from 160m to 70cm, with exceptions for 60m, 30m, and 1.25m), the maximum transmitting power is 1500 watts PEP

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Tags: transmit power 12 meters arrl chapter 3 arrl module 9

The 60-meter band is a special case.

Amateur allocation is secondary—the government has first dibs, and amateurs can only use 5 specific frequency channels.

To keep interference to a minimum when using voice modes, amateur radio operators may only use Upper Sideband signals with a maximum bandwidth of 2.8 kHz. (Remember almost 3)

There's also a power restriction (100W PEP).

Refer to FCC Part: [97.303(s)]

Link to ARRL chart: US Amateur Radio Bands

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Tags: 60 meters bandwidth rules and regulations ssb arrl chapter 3 arrl module 9

The 60-meter band is a unique band that amateur stations may use. The amateur radio service is secondary to the government when using this band and we are restricted to using 5 specific channels for only upper sideband voice communications. The power and bandwidth on this frequency range is also tightly specified. Because of the exact nature of operations on this band and to avoid interference with government communications, the FCC requires that if you are using anything other than a dipole antenna, you must keep a record of the gain of your antenna. This is to demonstrate that you are not using too much output power while operating on this frequency.

Refer to FCC Part: [97.303(s)]

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Tags: 60 meters rules and regulations operating rules arrl module 4 arrl chapter 2

(C). The FCC sets maximum transmitting power limits (Peak Envelope Power) for each amateur frequency band. We are allowed to use a maximum of 1500 watts PEP output on the 28 MHz (10-meter) band.

Refer to FCC Part: [97.313(b)]

Link to ARRL color chart: US Amateur Radio Bands

Link to ARRL text-based band table (more accessible): US Amateur Radio Frequency Allocations

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Tags: transmit power 10 meter arrl chapter 3 arrl module 9

The FCC sets maximum transmitting power limits (Peak Envelope Power) for each amateur frequency band. We are allowed to use up to a maximum of 1500 watts PEP output on the 1.8 MHz (160-meter) band.

Refer to FCC Part: [97.313(b)]

Link to ARRL color chart US Amateur Radio Bands

Link to ARRL text based band table (more accessible): US Amateur Radio Frequency Allocations

Hint: For 1.8 MHz, the "limit" is the highest or largest wattage of PEP output among the multiple choices.

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Tags: 160 meters transmit power arrl chapter 3 arrl module 9

Rules about digital modes are found in 47 C.F.R 97.309, subpart (a)(4) allows any mode that is publicly documented, so an experimental or rule-making petition would not be required.

FCC Type Certification does not cover digital modes on Amateur Radio.

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ERP = “Effective Radiated Power”

47 CFR 97.313 covers power limits across bands, part i regulates the power on the 60-meter band.

Subsection I provides a presumption of a half-wave dipole antenna with a maximum ERP of 100 watts PEP.

Important to note on the 60-meter band: if you are operating with an antenna with gain above a half-wave dipole, you must retain documentation showing the gain and/or calculations to ensure you do not exceed the 100 watt PEP ERP limit.

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Tags: arrl chapter 3 arrl module 9

Peak Envelope Power (PEP)

This is the highest power level emitted at the output of a transmitter regardless of modulation and other variables.

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