E2D - Operating Procedures
Extra Class
Weak signal VHF and UHF: EME, meteor scatter, tropospheric ducting
11 questions
Which of the following digital modes is designed for meteor scatter communications?
What information replaces signal-to-noise ratio when using the FT8 or FT4 modes in a VHF contest?
Which of the following digital modes is designed for EME communications?
What technology is used for real-time tracking of balloons carrying amateur radio transmitters?
What is the characteristic of the JT65 mode?
Which of the following is a method for establishing EME contacts?
What digital protocol is used by APRS?
What type of packet frame is used to transmit APRS beacon data?
What type of modulation is used by JT65?
What does the packet path WIDE3-1 designate?
How do APRS stations relay data?