4.1 KiB
4.1 KiB
G2E – Digital mode operating procedures
- G2E01 (D)
Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter? #card
- A. USB
- B. DSB
- C. CW
- D. LSB
- G2E02 (B)
What is VARA? #card
- A. A low signal-to-noise digital mode used for EME (moonbounce)
- B. A digital protocol used with Winlink
- C. A radio direction finding system used on VHF and UHF
- D.A DX spotting system using a network of software defined radios
- G2E03 (D)
What symptoms may result from other signals interfering with a PACTOR or VARA transmission? #card
- A. Frequent retries or timeouts
- B. Long pauses in message transmission
- C. Failure to establish a connection between stations
- D. All these choices are correct
- G2E04 (D)
Which of the following is good practice when choosing a transmitting frequency to answer a station calling CQ using FT8? #card
- A. Always call on the station’s frequency
- B. Call on any frequency in the waterfall except the station’s frequency
- C. Find a clear frequency during the same time slot as the calling station
- D. Find a clear frequency during the alternate time slot to the calling station
- G2E05 (B)
What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK? #card
- A. LSB
- B. USB
- C. DSB
- D. SSB
- G2E06 (B)
What is the most common frequency shift for RTTY emissions in the amateur HF bands? #card
- A. 85 Hz
- B. 170 Hz
- C. 425 Hz
- D. 850 Hz
- G2E07 (B)
Which of the following is required when using FT8? #card
- A. A special hardware modem
- B. Computer time accurate to within approximately 1 second
- C. Receiver attenuator set to -12 dB
- D. A vertically polarized antenna
- G2E08 (D)
In what segment of the 20-meter band are most digital mode operations commonly found? #card
- A. At the bottom of the slow-scan TV segment, near 14.230 MHz
- B. At the top of the SSB phone segment, near 14.325 MHz
- C. In the middle of the CW segment, near 14.100 MHz
- D. Between 14.070 MHz and 14.100 MHz
- G2E09 (C)
How do you join a contact between two stations using the PACTOR protocol? #card
- A. Send broadcast packets containing your call sign while in MONITOR mode
- B. Transmit a steady carrier until the PACTOR protocol times out and disconnects
- C. Joining an existing contact is not possible, PACTOR connections are limited to two stations
- D. Send a NAK code
- G2E10 (D)
Which of the following is a way to establish contact with a digital messaging system gateway station? #card
- A. Send an email to the system control operator
- B. Send QRL in Morse code
- C. Respond when the station broadcasts its SSID
- D. Transmit a connect message on the station’s published frequency
- G2E11 (C)
What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network? #card
- A. To provide FM repeater coverage in remote areas
- B. To provide real time propagation data by monitoring amateur radio transmissions worldwide
- C. To provide high-speed data services during an emergency or community event
- D. To provide DX spotting reports to aid contesters and DXers
- G2E12 (D)
Which of the following describes Winlink? #card
- A. An amateur radio wireless network to send and receive email on the internet
- B. A form of Packet Radio
- C. A wireless network capable of both VHF and HF band operation
- D. All of the above
- G2E13 (B)
What is another name for a Winlink Remote Message Server? #card
- A. Terminal Node Controller
- B. Gateway
- C. RJ-45
- D. Printer/Server
- G2E14 (D)
What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly? #card
- A. The mark and space frequencies may be reversed
- B. You may have selected the wrong baud rate
- C. You may be listening on the wrong sideband
- D. All these choices are correct
- G2E15 (C)
Which of the following is a common location for FT8? #card
- A. Anywhere in the voice portion of the band
- B. Anywhere in the CW portion of the band
- C. Approximately 14.074 MHz to 14.077 MHz
- D. Approximately 14.110 MHz to 14.113 MHz