B-001
Subelement B-001
Section B-001-016
Section B-001-016
What is the maximum authorized bandwidth on the 6-metre and 2-metre bands?
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Correct Answer30 kHz
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6 kHz
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20 kHz
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5 kHz
Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
The maximum bandwidth of an amateur radio station's transmission allowed in the band 28 MHz to 29.7 MHz is:
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Correct Answer20 kHz
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6 kHz
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15 kHz
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30 kHz
Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
Except for one band, what is the allowed bandwidth on amateur radio bands between 7 MHz and 25 MHz?
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20 kHz
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Correct Answer6 kHz
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30 kHz
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15 kHz
Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
The maximum bandwidth of an amateur radio station's transmission allowed in the band 144 MHz to 148 MHz is:
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15 kHz
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Correct Answer30 kHz
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20 kHz
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6 kHz
Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
The maximum bandwidth of an amateur radio station's transmission allowed in the band 50 MHz to 54 MHz is:
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6 kHz
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15 kHz
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Correct Answer30 kHz
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20 kHz
Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
Which of the following amateur radio bands has a maximum allowed bandwidth of less than 6 kHz?
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24.890 MHz to 24.990 MHz
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1.800 MHz to 2.000 MHz
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Correct Answer10.100 MHz to 10.150 MHz
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18.068 MHz to 18.168 MHz
Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
In which of the following amateur radio bands is single sideband prohibited?
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7.000 MHz to 7.300 MHz
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Correct Answer10.100 MHz to 10.150 MHz
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18.068 MHz to 18.168 MHz
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24.890 MHz to 24.990 MHz
Key word: PROHIBITED. SSB is too wide for 30 metres. Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
What precaution must an amateur radio operator take when transmitting near band edges?
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Reduce transmitter power
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Restrict operation to radiotelegraphy (CW) or digital modes
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Correct AnswerEnsure that the entire occupied bandwidth falls within the amateur radio band
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Make sure that the emission mode is compatible with agreed band plans
Transmissions occupy a certain bandwidth on the radio spectrum, i.e., a range of frequencies around the operating frequency; how wide a chunk depends on the amount of information to be transmitted concurrently. For example, a commercial TV channel requires 6 megahertz of bandwidth. Here are a few Amateur modes: CW (Morse) = about 100 Hz, SSB = 2 to 3 kHz, FM (5 kHz deviation) = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
Based on the frequency stated and emission mode, which of the following combinations is prohibited?
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Fast-scan television (ATV) on 440 MHz
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Correct AnswerFast-scan television (ATV) on 145 MHz
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Morse radiotelegraphy (CW) on 10.145 MHz
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FT8 on 14.074 MHz
Key word: PROHIBITED. With a bandwidth of 6 MHz, ATV is too wide for 2 metres. Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
Based on the frequency stated and emission mode, which of the following combinations is prohibited?
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Single sideband (SSB) on 3.76 MHz
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Correct AnswerFast-scan television (ATV) on 14.23 MHz
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Slow-scan television (SSTV) on 14.23 MHz
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Frequency modulation (FM) on 29.60 MHz
Key word: PROHIBITED. With a bandwidth of 6 MHz, ATV is too wide for 20 metres. Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
Based on the frequency stated and emission mode, which of the following combinations is prohibited?
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Morse radiotelegraphy (CW) on 10.11 MHz
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Frequency modulation (FM) on 29.6 MHz
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Correct AnswerSingle sideband (SSB) on 10.12 MHz
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FT8 on 10.136 MHz
Key word: PROHIBITED. SSB is too wide for 30 metres. Allowed bandwidths: with the exception of 30 m (10.1 to 10.15 MHz) where 1 kHz is allowed, 6 kHz is allowed on bands below 28 MHz, 20 kHz is allowed on 10 m (28.0 to 29.7 MHz), 30 kHz is allowed on 6 m (50 to 54 MHz) and 2 m (144 to 148 MHz), Fast-scan Amateur Television only becomes permissible on 430 to 450 MHz [where 12 MHz of bandwidth is allowed]. In order of bandwidth requirements: CW = about 100 Hz, RTTY = about 600 Hz, AM = 6 kHz, SSB = 2 to 3 kHz, FM = 10 to 20 kHz.
Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.
Tags: none
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