Since most phone signals using SSB take up approximately 3 kHz of bandwidth, for Upper Side Band the transmission would have to be 3 kHz below the upper edge in order to not exceed our privileges.

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Tags: phone ssb bandwidth arrl chapter 3 arrl module 3a

Test Tip: With all of these types of questions the correct answer begins with "3 kHz"

The SSB take up approximately 3khz of bandwidth for Lower Side Band (LSB) so you need to tune the radio 3khz above the lower edge so you will not be transmitting outside of your bandwidth privileges.

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Tags: phone ssb bandwidth arrl chapter 3 arrl module 3a

Remember that your actual signal extends to either side of the frequency you are transmitting on. A Single Side Band (SSB) transmission usually uses between 300–3,400 Hz of bandwidth, so as much as half of that is up and down from the frequency you are currently on.

The upper limit for the 14 MHz (20 meters) band is 14.350 MHz (see ARRL's band chart) and so your signal if you transmit on 14.349 MHz could easily go above 14.350 MHz and you would be transmitting out of band.

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Tags: 20 meters bandwidth frequencies ssb arrl chapter 3 arrl module 3a

Remember that your actual signal extends to either side of the frequency you are transmitting on. A Lower Side Band (LSB) transmission is considered to have 3 kHz of bandwidth below the carrier, so you should set your carrier at least 3 kHz higher than the lower edge of the 80 meter band's voice portion when operating LSB.

The lower limit for phone in the 3MHz (80 meter) band is 3.600 MHz, so the sideband of your signal if you transmit on 3.601 Mhz could easily go below 3.600 MHz and you would be transmitting in a part of the band where phone is not allowed.

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Tags: international morse code bandwidth 75/80 meters arrl chapter 3 arrl module 3a

The 60 meter band has special restrictions including the restriction of radiated power relative to the gain of a half-wavelength dipole antenna which is 100 watts PEP. If the antenna is something other than a half-wavelength antenna, then the power output must be adjusted.

If you have a 3 dBd gain antenna which would be twice the gain of a dipole, then you would have to reduce the output power to 50 watts.

Hint: The correct answer is the only one that has "half-wave dipole" in it.

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Tags: 60 meters transmit power rules and regulations arrl chapter 3 arrl module 3a

All signals transmitted by an amateur on 60 meter channels must be centered within the channel.

Memory Aid: Think "sixty-center"

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Tags: arrl chapter 3 arrl module 3a

In order to maintain compatibility with non-amateur stations who are the primary users of this band, the five channels which are 2.8 kHz wide are allocated to the amateur band (5332 kHz, 5348 kHz, 5368 kHz, 5373 kHz, and 5405 kHz) and must be centered in the channel with USB, data and CW signals.

Last edited by brankin. Register to edit

Tags: 60 meters rules and regulations arrl chapter 3 arrl module 3a

Message forwarding systems are just that -- systems that forward messages.

While control operators of message forwarding stations are expected to do what is reasonable to prevent incorrect use of their station, the primary responsibility for the contents of a message still belongs to the station that sends the original message.

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Tags: control operator rules and regulations message forwarding arrl chapter 3 arrl module 3a

Primary responsibility for the contents of a message belongs to the originating station but your station still has the responsibility to do what is reasonable to ensure that the transmissions that it sends (including forwarded messages) do not violate FCC rules.

Basically that just means that if you discover that your station is forwarding something that violates rules, take steps so that that communication is no longer being forwarded.

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Tags: digital modes rules and regulations message forwarding arrl chapter 3 arrl module 3a

Just remember that on a ship or plane the captain is in charge. That could be the captain/master of a seagoing vessel or the captain/pilot of an airplane. In either case you should not use an amateur radio station without permission from the captain.

Also, this is the only question with the words "master" or "approved".

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Tags: aircraft/ship operation station types arrl chapter 3 arrl module 3a

Amateur Radio stations aboard a US-registered vessel in international waters are under the same guidelines as any station on US soil. You need a FCC-issued ham license or a reciprocal permit for an alien amateur license (meaning a license from another country) to operate your license on US soil, so you need that on a US-registered vessel as well.

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Tags: aircraft/ship operation international arrl chapter 3 arrl module 3a

Test Tip: with ALL of these types of questions (about 3 or 4 of them) the answer is "NO, one of the sidebands will be out of the band".

Even though the bandwidth required for a CW signal is very narrow, it is not nothing. Therefore, if you transmit CW with your transceiver displaying "3.500 MHz" that will be the center of your signal and so your sidebands will extend both above and below that frequency.

3.500 MHz is the lower limit of the part of the 80 meter band that Amateur Radio operators are allowed to use, so if your sidebands extend below 3.500 MHz (which they would in this case) you are transmitting out of band.

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Tags: morse code bandwidth 75/80 meters international arrl chapter 3 arrl module 3a

The rules for operating an amateur radio station aboard a vessel or craft in the US are roughly the same as the rules governing any other station in the United States.

Specifically, the control operator (the person in physical control of the station apparatus) must either hold a valid FCC-issued amateur radio license or they must be authorized for alien reciprocal operation -- that is, they can operate if they are an alien (non-US citizen) holding a license in a country with whom the US has a reciprocal operating agreement allowing them to operate in the United States with their alien amateur radio license.

Goofy hint: ”control” is in the question, and ”aliens” is in the correct answer. In sci-fi movies, the aliens always try to take control of Earth.

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Tags: aircraft/ship operation station types arrl chapter 3 arrl module 3a

The maximum bandwidth for a data emission on 60 meters is 2.8 kHz.

Amateurs are not the primary users on the 60 meter band so operation on 60 meters is restricted to five 2.8 kHz wide channels centered on

• 5332 kHz,
• 5348 kHz,
• 5368 kHz,
• 5373 kHz, and
• 5405 kHz

...with USB, data, and CW signals.

Silly Tip: Question asks for MAXIMUM bandwidth and the answer is the HIGHEST frequency of answers.

Additional tip: around 2.5-3kHz is the typical bandwidth used for speech, so is a pretty common answer, even when (as in this question) actually transmitting data rather than voice.

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Tags: arrl chapter 3 arrl module 3a