Create an account
E2D01 What does "command mode" mean in packet operations? / A. Your computer is ready to run packet communications software / B. The TNC is ready to receive instructions via the keyboard / C. Your TNC has received a command packet from a remote TNC / D. The computer is ready to be set up to communicate with the TNC
E2D02 What is the definition of "baud"? / A. The number of data symbols transmitted per second / B. The number of characters transmitted per second / C. The number of characters transmitted per minute / D. The number of words transmitted per minute
E2D03 Which of the follow is true when comparing HF and 2-meter packet operations? / A. HF packet typically uses FSK with a data rate of 300 baud; 2-meter packet uses AFSK with a data rate of 1200 baud / B. HF packet and 2-meter packet operations use different codes for information exchange / C. HF packet is limited to Amateur Extra class amateur licensees; 2-meter packet is open to all but Novice Class amateur licensees / D. HF and 2-meter packet operations are both limited to CW/Data-only band segments
E2D04 What is the purpose of digital store-and-forward functions on an Amateur satellite? / A. To upload operational software for the transponder / B. To delay download of telemetry until the satellite is over the control station / C. To store digital messages in the satellite for later download by other stations / D. To relay messages between satellites
E2D05 Which of the following techniques is normally used by low-earth orbiting digital satellites to relay messages around the world? / A. Digipeating / B. Store-and-forward / C. Multi-satellite relaying / D. Node hopping
E2D06 Which of the following is a commonly used 2-meter APRS frequency? / A. 144.20 MHz / B. 144.39 MHz / C. 145.02 MHz / D. 146.52 MHz
E2D07 Which of the following digital protocols is used by APRS? / A. AX.25 / B. 802.11 / C. PACTOR / D. AMTOR
E2D08 Which of the following types of packet frames is used to transmit APRS beacon data? / A. Connect frames / B. Disconnect frames / C. Acknowledgement frames / D. Unnumbered Information frames
E2D09 Under clear communications conditions, which of these digital communications modes has the fastest data throughput? / A. AMTOR / B. 170-Hz shift, 45 baud RTTY / C. PSK31 / D. 300-baud packet
E2D10 How can an APRS station be used to help support a public service communications activity? / A. An APRS station with an emergency medical technician can automatically transmit medical data to the nearest hospital / B. APRS stations with General Personnel Scanners can automatically relay the participant numbers and time as they pass the check points / C. An APRS station with a GPS unit can automatically transmit information to show a mobile station's position during the event / D. All of these choices are correct
E2D11 Which of the following data sources are needed to accurately transmit your geographical location over the APRS network? / A. The NMEA-0183 formatted data from a Global Positioning System (GPS) satellite receiver / B. The latitude and longitude of your location, preferably in degrees, minutes and seconds, entered into the APRS computer software / C. The NMEA-0183 formatted data from a LORAN navigation system / D. Any of these choices is correct
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together