E2D01

What does “command mode” mean in packet operations?

1. The TNC is ready to receive instructions via the keyboard

E2D02

What is the definition of “baud”?

1. The number of data symbols transmitted per second

E2D03

Which of the follow is true when comparing HF and 2-meter packet operations?

1. HF packet typically uses FSK with a data rate of 300 baud; 2-meter packet uses AFSK with a data rate of 1200 baud

E2D04

What is the purpose of digital store-and-forward functions on an Amateur satellite?

1. To store digital messages in the satellite for later download by other stations

E2D05

Which of the following techniques is normally used by low-earth orbiting digital satellites to relay messages around the world?

1. Store-and-forward

E2D06

Which of the following is a commonly used 2-meter APRS frequency?

1. 144.39 MHz

E2D07

Which of the following digital protocols is used by APRS?

1. AX.25

E2D08

Which of the following types of packet frames is used to transmit APRS beacon data?

1. Unnumbered Information frames

E2D09

Under clear communications conditions, which of these digital communications modes has the fastest data throughput?

1. 300-baud packet

E2D10

How can an APRS station be used to help support a public service communications activity?

1. An APRS station with a GPS unit can automatically transmit information to show a mobile station's position during the event

E2D11

Which of the following data sources are needed to accurately transmit your geographical location over the APRS network?

1. Any of these choices is correct

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