License Exam Quiz #378

de Steve, AE8AT 

The coming weekend is the CQ WW VHF Digital contest, running 1400UTC to 1400UTC July 18-19.  VHF means the contest is on the 2m and 6m band. Digital modes means everyone will be on FT8, a few on FT4, but any other digital mode is acceptable. As always, if you are participating in a contest, read the rules!  https://cqww-vhf.com/rules/

T8D02 What is FT8?

A. A wideband FM voice mode

B. A digital mode capable of low signal-to-noise operation

C. An eight-channel multiplex mode for FM repeaters

D. A digital slow-scan TV mode with forward error correction and automatic color compensation

G8A09 What type of modulation is used by FT8?

A. 8-tone frequency shift keying

B. Vestigial sideband

C. Amplitude compressed AM

D. 8-bit direct sequence spread spectrum

E2D02 What information replaces signal-to-noise ratio when using the FT8 or FT4 modes in a VHF contest?

A. RST report

B. State abbreviation

C. Serial number

D. Grid square

Answers:

T8D02 = B

G8A09 = A

E2D02 = D