Practical picture
Voice, CW, digital, satellites, direction finding, and internet-linked systems all move information differently. Learn what each mode is good at and the vocabulary that describes it.
T8 · Signals & Emissions
T8 Signals & Emissions
Voice, CW, digital, satellites, direction finding, and internet-linked systems all move information differently. Learn what each mode is good at and the vocabulary that describes it.
Technician exam focus
T8 has 4 question groups and contributes 4 questions to a Technician exam — one from each group.
Subelement T8
Signals & Emissions
Work through the groups below in any order. Each page teaches the idea in normal language while keeping the tested terminology recognizable.
T8A · 12 pool questions
FM, SSB, CW & Bandwidth
FM and SSB characteristics, bandwidth, mode choice, and sideband conventions.
Study T8A →T8B · 12 pool questionsAmateur Satellites & Doppler
Satellite telemetry, orbits, Doppler shift, uplinks/downlinks, tracking, beacons, spin fading, and power.
Study T8B →T8C · 11 pool questionsDirection Finding, Contests & Internet Linking
Radio direction finding, hidden transmitter hunts, contests, grid locators, IRLP, EchoLink, and VoIP.
Study T8C →T8D · 12 pool questionsDigital & Non-Voice Communications
Image modes, CW, packet, PSK, APRS, error detection/correction, networking, DMR, WSJT modes, and Broadband-Hamnet.
Study T8D →Close the loop
Quiz Me on T8
Study the concepts here, then use the current public-domain Technician pool to see how they are asked on the exam.
Exam scope: NCVEC 2026–2030 Technician Class (Element 2), effective July 1, 2026 through June 30, 2030, with February 19, 2026 errata. The current NCVEC pool is the exam authority; explanatory prose here is SPARKA teaching material. NCVEC pool