This app is a mock exam tool for the Class A amateur radio operator certificate. It uses the CRAC 2025 question bank, containing 683 real exam questions with answer explanations, and works offline once installed. It is aimed at people preparing for the Class A amateur radio exam who want to practice questions and review answers on their own schedule, including without a network connection.
A practice exam app for China's Class A amateur radio operator license, with 683 questions and answer explanations.
What you can do
Practice from a 683-question bank based on the CRAC 2025 exam questions.
Read answer explanations for each question.
Use the app offline after installation.
Publisher / site
bjdr69.github.io
Category
Education
Platforms
Web
Languages detected
zh-CN
APP PREVIEWS
See 业余无线电A类模拟考试（HAM） before you open it.
Browse the available app previews. Select any image to open a larger view.
BEST FOR
Decide whether 业余无线电A类模拟考试（HAM） fits your needs.
Useful for
Practice from a 683-question bank based on the CRAC 2025 exam questions.
Read answer explanations for each question.
Use the app offline after installation.
Before you choose
Available on Web
INSTALL GUIDE
Install 业余无线电A类模拟考试（HAM） from its official site.
1
Open the official web app
Use the Open site button above in a current version of Chrome, Edge or Safari.
2
Choose the browser install action
Select Install app, or use Add to Home Screen from the browser share or main menu.
3
Confirm and launch
The installed app opens from the device launcher. Browser and platform support can vary.
PWA AUDIT
How well does 业余无线电A类模拟考试（HAM） work as an installed app?
The product overview above helps you choose the service. This independent technical section checks its install experience, browser integration and current PWA signals.
CAPABILITY REPORT
Detected web app capabilities.
DeclaredDetectedVerifiedNot found
declared
Standalone app window
Requests the “standalone” display mode when launched.
experience
not found
Advanced window modes
Declares preferred window modes beyond the basic display setting.
experience
declared
Preferred screen orientation
Requests portrait orientation.
experience
not found
Custom launch behavior
Controls how repeated launches reuse or create app windows.
experience
detected
Service worker detected
Registration appears in the page source; offline behavior still needs a runtime test.
experience
not found
App shortcuts
Offers quick actions from the installed app icon.
integration
not found
Share target
Can receive content from the operating system share sheet.
integration
not found
File handlers
Can register supported file types with the operating system.
integration
not found
Protocol handlers
Can open supported custom link protocols.
integration
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Related native app
Links the PWA to a related application on another platform.
integration
declared
3 install previews
Screenshots can be shown in richer installation prompts.
presentation
not found
Adaptive Android icon
Provides an icon that can fill different launcher shapes.
presentation
not found
Monochrome icon
Provides a themed single-color icon for supported surfaces.
