Silvance Prep

Ham Extra Prep

Study app for the FCC Amateur Extra license exam, with lessons, drills, an interactive Smith chart, and all 599 questions in the current pool.

Not yet available. No release date has been announced.

Product data

Status
In development
Platform
Android
Family
Silvance Prep
License
FCC Amateur Extra class
Exam
Element 4, 50 questions, 37 correct to pass
Question pool
NCVEC 2024–2028 Extra pool (599 questions)

About

The Amateur Extra license grants every amateur privilege in the United States. Its exam is the longest of the three: 50 questions from a pool of nearly 600, with more mathematics and circuit theory than the Technician or General exams.

Ham Extra Prep pairs the pool with lessons and explanations written for it, drills for the calculations the exam asks for, and an interactive Smith chart for the impedance-matching questions that are hard to learn from a static figure.

Screenshots

From a development build. Progress shown is test data.

  • Home screen showing an estimated score out of 50, the study plan, the next lesson, and progress by section.
  • A study question on FSK bandwidth, answered, with the calculation shown below.
  • Mistakes review of a question on volunteer examiner duties, with the rule cited.
  • Lesson on amplifier classes and circuits with a figure from the pool.
  • Band plan with a frequency check and Extra-class privileges listed for the low HF bands.
  • Schematic symbol reference listing a fuse, switch, antenna, ground, logic gates, and an operational amplifier.
  • Home screen lower sections listing drills, tools, and recent practice exam results.

Planned features

Intended scope. Subject to change before release.

A lesson for every question group
50 lessons, each followed by practice on that group's questions.
Explanations for every question
Why the correct answer is correct, and why each other option is not.
Practice exams drawn like the real one
50 questions, 37 to pass, with a review of every miss.
Math drills
Resonance, Q and bandwidth, reactance, phase angle, time constants, modulation index, op-amp gain, and ERP, with worked solutions.
Interactive Smith chart
Plot an impedance, see its SWR circle, move it along the line, and find a match.
Band plan and schematic symbols
Extra-class privileges on every band, and the pool's schematic symbols including FETs, logic gates, and the op-amp.
Works offline
All study material is on the device.

Planned pricing

Free to download. The first sections and one practice exam are free; a one-time purchase unlocks the rest.

  • Planned price $4.99.
  • No subscription.