Settings
The Settings tab lets you customize the app's behavior to your preferences.
Screen Orientation
On default, the AUTO setting follows your system's behavior for screen orientation. If you'd like to lock in a fixed screen orientation choose one of the following from the dropdown list:
- Portrait
- Landscape
- Reverse Portrait
- Reverse Landscape
App Color Theme
This setting lets you choose the color theme of the app's controls. RF Analyzer has a standard theme but you may also choose the dynamic coloring of the Android System (available from Android Version 12):
- RF Analyzer Theme (dark)
- RF Analyzer Theme (light)
- RF Analyzer Theme (system setting)
- System Theme (dark)
- System Theme (light)
- System Theme (system setting)
Selecting a 'system setting' theme will use the systems' current setting for the light/dark mode. Currently RF Analyzer looks best using the RF Analyzer (dark) theme which is the default setting.
Font Size (FFT Plot)
The font size setting affects the size of the labels and the grid in the FFT and Waterfall plot.
Context Help System
This setting enables or disables the context-aware help system. If enabled, a long press on any UI element label will open the user manual section for this UI element. The label is located in the upper left gap of the border of each UI element.
Control Drawer Alignment (Landscape)
The Control Drawer is accessible on the side of the screen when the device is in landscape orientation. This setting lets you choose on which side the drawer should appear.
Allow Out-of-Bound Frequency (RTL-SDR)
The RTL-SDR devices have a tune frequency range which is determined by the tuner chip:
| Tuner Chip | Lowest Frequency | Highest Frequency |
|---|---|---|
| Elonics E4000 | 52 MHz | 2200 MHz |
| Rafael Micro R820T | 24 MHz | 1766 MHz |
| Rafael Micro R828D | 24 MHz | 1766 MHz |
| Fitipower FC0013 | 22 MHz | 1100 MHz |
| Fitipower FC0012 | 22 MHz | 948.6 MHz |
| FCI FC2580 | 146 MHz | 924 MHz |
RF Analyzer is programmed to restrict the tune frequency according to the tuner chip that is currently used. If this is undesired, this setting allows you to disable these restrictions. That means any frequency can be entered. The result however, may be incorrect if the chip does not support the frequency.
Warning
This is an expert setting that should only be enabled if you know what you are doing.
Show Debug Information
With this switch enabled, debug information (e.g. current FPS) is printed in the upper right corner of the FFT plot.
Logging
For debugging purposes, the app can write all log messages to a text file. Once logging is enabled, the text file can be viewed, saved to a folder, shared or deleted.
In case you encounter software errors in the app please consider giving me feedback via email (rfanalyzerapp -at- gmail.com) or via a GitHub Issue and include the log file.
In case the app crashes, please allow the Android System to collect data for a crash report. This is the most efficient way for me to be able to fix such issues.
Wrapping Up
This marks the end of the introduction to the RF Analyzer control drawer elements. Further information on the app (e.g. licensing and access to the manual/tutorial) can be found on the About Tab. If you are interested in further reading on signal processing and amateur radio you may head over to the Additional Information section of this manual.