Shared Flashcard Set

Details

Tech - T8 Ham Radio - v2014
Modulation modes, amateur satellite operation, operating activities, non-voice communications – [4 Exam Questions - 4 Groups]
43
Engineering
Not Applicable
04/01/2011

Additional Engineering Flashcards

 


 

Cards

Term
T8A01 Which of the following is a form of amplitude modulation?
Definition
Single sideband
Term
T8A02 What type of modulation is most commonly used for VHF packet radio transmissions?
Definition
FM
Term
T8A03 Which type of voice modulation is most often used for long-distance or weak signal contacts on the VHF and UHF bands?
Definition
SSB
Term
T8A04 Which type of modulation is most commonly used for VHF and UHF voice repeaters?
Definition
FM
Term
T8A05 Which of the following types of emission has the narrowest bandwidth?
Definition
CW
Term
T8A06 Which sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications?
Definition
Upper sideband
Term
T8A07 What is the primary advantage of single sideband over FM for voice transmissions?
Definition
SSB signals have narrower bandwidth
Term
T8A08 What is the approximate bandwidth of a single sideband voice signal?
Definition
3 kHz
Term
T8A09 What is the approximate bandwidth of a VHF repeater FM phone signal?
Definition
Between 5 and 15 kHz
Term
T8A10 What is the typical bandwidth of analog fast-scan TV transmissions on the 70 cm band?
Definition
About 6 MHz
Term
T8A11 What is the approximate maximum bandwidth required to transmit a CW signal?
Definition
150 Hz
Term
T8B01 Who may be the control operator of a station communicating through an amateur satellite or space station?
Definition
Any amateur whose license privileges allow them to transmit on the satellite uplink frequency
Term
T8B02 How much transmitter power should be used on the uplink frequency of an amateur satellite or space station?
Definition
The minimum amount of power needed to complete the contact
Term
T8B03 Which of the following can be done using an amateur radio satellite?
Definition
Talk to amateur radio operators in other countries
Term
T8B04 Which amateur stations may make contact with an amateur station on the International Space Station using 2 meter and 70 cm band amateur radio frequencies?
Definition
Any amateur holding a Technician or higher class license
Term
T8B05 What is a satellite beacon?
Definition
A transmission from a space station that contains information about a satellite
Term
T8B06 What can be used to determine the time period during which an amateur satellite or space station can be accessed?
Definition
A satellite tracking program
Term
T8B07 With regard to satellite communications, what is Doppler shift?
Definition
An observed change in signal frequency caused by relative motion between the satellite and the earth station
Term
T8B08 What is meant by the statement that a satellite is operating in "mode U/V"?
Definition
The satellite uplink is in the 70 cm band and the downlink is in the 2 meter band
Term
T8B09 What causes "spin fading" when referring to satellite signals?
Definition
Rotation of the satellite and its antennas
Term
T8B10 What do the initials LEO tell you about an amateur satellite?
Definition
The satellite is in a Low Earth Orbit
Term
T8C01 Which of the following methods is used to locate sources of noise interference or jamming?
Definition
Radio direction finding
Term
T8C02 Which of these items would be useful for a hidden transmitter hunt?
Definition
A directional antenna
Term
T8C03 What popular operating activity involves contacting as many stations as possible during a specified period of time?
Definition
Contesting
Term
T8C04 Which of the following is good procedure when contacting another station in a radio contest?
Definition
Send only the minimum information needed for proper identification and the contest exchange
Term
T8C05 What is a grid locator?
Definition
A letter-number designator assigned to a geographic location
Term
T8C06 For what purpose is a temporary "1 by 1" format (letter-number-letter) call sign assigned?
Definition
For operations in conjunction with an activity of special significance to the amateur community
Term
T8C07 What is the maximum power allowed when transmitting telecommand signals to radio controlled models?
Definition
1 watt
Term
T8C08 What is required in place of on-air station identification when sending signals to a radio control model using amateur frequencies?
Definition
A label indicating the licensee’s name, call sign and address must be affixed to the transmitter
Term
T8C09 How might you obtain a list of active nodes that use VoIP?
Definition
From a repeater directory
Term
T8C10 How do you select a specific IRLP node when using a portable transceiver?
Definition
Use the keypad to transmit the IRLP node ID
Term
T8C11 What name is given to an amateur radio station that is used to connect other amateur stations to the Internet?
Definition
A gateway
Term
T8D01 Which of the following is an example of a digital communications method?
Definition
Packet AND PSK31 AND MFSK AND All of these choices are correct
Term
T8D02 What does the term APRS mean?
Definition
Automatic Position Reporting System
Term
T8D03 Which of the following is normally used when sending automatic location reports via amateur radio?
Definition
A Global Positioning System receiver
Term
T8D04 What type of transmission is indicated by the term NTSC
Definition
An analog fast scan color TV signal
Term
T8D05 Which of the following emission modes may be used by a Technician Class operator between 219 and 220 MHz?
Definition
Data
Term
T8D06 What does the abbreviation PSK mean?
Definition
Phase Shift Keying
Term
T8D07 What is PSK31?
Definition
A low-rate data transmission mode
Term
T8D08 Which of the following may be included in packet transmissions?
Definition
A check sum which permits error detection AND A header which contains the call sign of the station to which the information is being sent AND Automatic repeat request in case of error AND All of these choices are correct
Term
T8D09 What code is used when sending CW in the amateur bands?
Definition
International Morse
Term
T8D10 Which of the following can be used to transmit CW in the amateur bands?
Definition
Straight Key AND Electronic Keyer AND Computer Keyboard AND All of these choices are correct
Term
T8D11 What is a "parity" bit?
Definition
An extra code element used to detect errors in received data
Supporting users have an ad free experience!