COMMISSION RULES
Operating Standards: frequency privileges; automatic message forwarding; stations aboard ships or aircraft; power restriction on 630 and 2200 meter bands
Which of the following carrier frequencies is illegal for LSB AFSK emissions on the 17 meter band RTTY and data segment of 18.068 to 18.110 MHz?
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Correct Answer18.068 MHz
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18.100 MHz
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18.107 MHz
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18.110 MHz
In LSB (Lower Side Band) emissions, the transmitted energy falls below the suppressed carrier frequency. Transmitting with a display frequency of 18.068 MHz puts the emissions outside of the allowed band of 18.068 to 18.110 MHz. The emitted energy falls within the band for all other answers.
Hint: The question and answer both have 18.068 in it.
Last edited by katzelover. Register to edit
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When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies represents the lowest frequency at which a properly adjusted LSB emission will be totally within the band?
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The exact lower band edge
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300 Hz above the lower band edge
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1 kHz above the lower band edge
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Correct Answer3 kHz above the lower band edge
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.
Last edited by mrdfox7. Register to edit
Tags: phone ssb bandwidth arrl chapter 3 arrl module 3a
What is the maximum legal carrier frequency on the 20 meter band for transmitting USB AFSK digital signals having a 1 kHz bandwidth?
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14.070 MHz
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14.100 MHz
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Correct Answer14.149 MHz
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14.349 MHz
The data portion of the 20m band is 14.00-14.15 MHz according to § 97.305
In USB (Upper Side Band) emissions, the transmitted energy falls above the suppressed carrier frequency. Transmitting with a display frequency above 14.149 MHz puts the 1KHz bandwidth emissions outside the top of the allowed band at 14.15 MHz. The emitted energy falls within the band for all other answers.
For safety you may want to keep your carrier frequency below 14.147 in case your AFSK audio exceeds a bandwidth of 1 KHz because the USB bandwidth could be as much as 3 KHz.
Adding 1kHz to 14.149 MHz gives you 14.15 MHz, the top of the data portion of the 20m band.
Last edited by johnglasco. Register to edit
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With your transceiver displaying the carrier frequency of phone signals, you hear a DX station calling CQ on 3.601 MHz LSB. Is it legal to return the call using lower sideband on the same frequency?
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Yes, because the DX station initiated the contact
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Yes, because the displayed frequency is within the 75 meter phone band segment
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Correct AnswerNo, the sideband will extend beyond the edge of the phone band segment
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No, U.S. stations are not permitted to use phone emissions below 3.610 MHz
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.
Last edited by jeffrey.chenoweth. Register to edit
Tags: international morse code bandwidth 75/80 meters arrl chapter 3 arrl module 3a
What is the maximum power output permitted on the 60 meter band?
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50 watts PEP effective radiated power relative to an isotropic radiator
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50 watts PEP effective radiated power relative to a dipole
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Correct Answer100 watts PEP effective radiated power relative to the gain of a half-wave dipole
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100 watts PEP effective radiated power relative to an isotropic radiator
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
Where must the carrier frequency of a CW signal be set to comply with FCC rules for 60 meter operation?
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At the lowest frequency of the channel
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Correct AnswerAt the center frequency of the channel
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At the highest frequency of the channel
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On any frequency where the signal's sidebands are within the channel
All signals transmitted by an amateur on 60 meter channels must be centered within the channel.
Memory Aid: Think "sixty-center"
Last edited by kd7bbc. Register to edit
Tags: arrl chapter 3 arrl module 3a
What is the maximum power permitted on the 2200 meter band?
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50 watts PEP
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100 watts PEP
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Correct Answer1 watt EIRP (Equivalent isotropic radiated power)
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5 watts EIRP (Equivalent isotropic radiated power)
This is a memory item.
2200M is the lowest band on the band plan. The correct answer has the lowest wattage.
See: http://www.arrl.org/images/view//Charts/Band_Chart_Image_for_ARRL_Web.jpg
TEST TIP: For this question, and associated question E1A14, when trying to remember the power limits for the two lowest amature bands, the LOWEST BAND (2200M) gets the LOWEST POWER (1W) while the SECOND-LOWEST BAND (630M) gets the SECOND-LOWEST POWER option (5W).
Last edited by w9mpx. Register to edit
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If a station in a message forwarding system inadvertently forwards a message that is in violation of FCC rules, who is primarily accountable for the rules violation?
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The control operator of the packet bulletin board station
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Correct AnswerThe control operator of the originating station
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The control operators of all the stations in the system
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The control operators of all the stations in the system not authenticating the source from which they accept communications
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.
Last edited by 10216478359731091. Register to edit
Tags: control operator rules and regulations message forwarding arrl chapter 3 arrl module 3a
What action or actions should you take if your digital message forwarding station inadvertently forwards a communication that violates FCC rules?
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Correct AnswerDiscontinue forwarding the communication as soon as you become aware of it
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Notify the originating station that the communication does not comply with FCC rules
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Notify the nearest FCC Field Engineer's office
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All these choices are correct
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.
Last edited by kd7bbc. Register to edit
Tags: digital modes rules and regulations message forwarding arrl chapter 3 arrl module 3a
If an amateur station is installed aboard a ship or aircraft, what condition must be met before the station is operated?
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Correct AnswerIts operation must be approved by the master of the ship or the pilot in command of the aircraft
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The amateur station operator must agree not to transmit when the main radio of the ship or aircraft is in use
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The amateur station must have a power supply that is completely independent of the main ship or aircraft power supply
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The amateur operator must have an FCC Marine or Aircraft endorsement on his or her amateur license
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".
Last edited by purpleteam. Register to edit
Tags: aircraft/ship operation station types arrl chapter 3 arrl module 3a
Which of the following describes authorization or licensing required when operating an amateur station aboard a U.S.-registered vessel in international waters?
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Any amateur license with an FCC Marine or Aircraft endorsement
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Correct AnswerAny FCC-issued amateur license
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Only General Class or higher amateur licenses
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An unrestricted Radiotelephone Operator Permit
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.
Last edited by mvs90. Register to edit
Tags: aircraft/ship operation international arrl chapter 3 arrl module 3a
What special operating frequency restrictions are imposed on slow scan TV transmissions?
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None; they are allowed on all amateur frequencies
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They are restricted to 7.245 MHz, 14.245 MHz, 21.345 MHz, and 28.945 MHz
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Correct AnswerThey are restricted to phone band segments
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They are not permitted above 54 MHz
Slow scan TV uses a similar amount of bandwidth to SSB phone (voice) transmissions, so it is allowed on the same band segments (except 60 meters).
Last edited by gxti. Register to edit
Tags: arrl chapter 8 arrl module 8e
Who must be in physical control of the station apparatus of an amateur station aboard any vessel or craft that is documented or registered in the United States?
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Only a person with an FCC Marine Radio license grant
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Correct AnswerAny person holding an FCC issued amateur license or who is authorized for alien reciprocal operation
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Only a person named in an amateur station license grant
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Any person named in an amateur station license grant or a person holding an unrestricted Radiotelephone Operator Permit
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.
Last edited by ironcal67. Register to edit
Tags: aircraft/ship operation station types arrl chapter 3 arrl module 3a
Except in some parts of Alaska, what is the maximum power permitted on the 630 meter band?
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50 watts PEP
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100 watts PEP
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1 watt EIRP
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Correct Answer5 watts EIRP
This is a memory item, see the ARRL Band Plan Chart
TEST TIP: For this question, and associated question E1A07, when trying to remember the power limits for the two lowest amateur bands, the LOWEST BAND (2200M) gets the LOWEST POWER (1W) while the SECOND-LOWEST BAND (630M) gets the SECOND-LOWEST POWER option (5W).
Last edited by charims. Register to edit
Tags: none
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