Robot36 - SSTV Image Decoder - Decode SSTV signals

Experience seamless decoding of SSTV modes & automatically save stunning images to your gallery for easy viewing!

2.15 Version
4.8 Score
327K+ Downloads
Free License
3+ Content Rating

Download Android APK (4.75 MB)

Old Versions

PROS

Easy to use and fully automatic

Supports decoding of SSTV images

Produces clear images from the International Space Station

Allows saving decoded images directly to the device

Good noise canceling for clearer audio processing

Works well with limited user interaction required

Suitable for hobbyist radio operators with various channels available

Open source with a straightforward privacy policy

CONS

Some features are grayed out or unresponsive

Cannot turn off the app completely; it always runs in the background

Experiences crashes and malfunctions after updates

Mode resets automatically when restarting decoding

Save and share functions can be unreliable

Issues with decoding certain formats or modes consistently

Lack of more advanced settings or customization options

Frustrating user experience with no confirmation dialogs for actions like deleting images

The following SSTV modes are available:

Robot Modes: 36 & 72

PD Modes: 50, 90, 120, 160, 180, 240 & 290

Martin Modes: 1 & 2

Scottie Modes: 1, 2 & DX

Wraase Mode: SC2-180

Older black and white or unsupported modes can be accessed in "Raw" mode.

When the calibration header of a supported mode is detected, the resulting image will automatically be saved to the "Pictures" folder and can be viewed in the Image gallery.

In version 2, running the decoder in the background will no longer be an option.

A Robust and Specialized Tool for SSTV Enthusiasts

As an amateur radio operator and SSTV enthusiast, I have found this decoder to be an exceptionally reliable and feature-rich solution for receiving and decoding a wide array of SSTV modes. The application impressively supports an extensive range of modes including Robot, PD, Martin, Scottie, and even the Wraase SC2-180 mode, making it remarkably versatile for both modern and legacy transmissions. The automatic detection and saving of images upon header calibration significantly streamlines the decoding process, allowing users to focus on signal reception rather than manual processing.

While version 2's removal of background decoding capability initially seemed like a limitation, I found that the enhanced stability and improved decoding accuracy in the foreground operation more than compensate for this change. The inclusion of a raw mode for unsupported and historical black-and-white formats demonstrates thoughtful attention to the diverse needs of the SSTV community. This application has become an indispensable tool in my amateur radio toolkit, combining technical sophistication with practical usability.

FAQ Section:

Can the decoder process real-time signals directly from a radio?

Yes, when connected to your radio's audio output, it can decode live SSTV transmissions in supported modes.

Does the application require internet access to function?

No, all decoding processes occur offline once the application is installed.

Are decoded images automatically timestamped?

Yes, all images are saved with timestamps and can be organized through the built-in gallery.

Can I adjust decoding sensitivity for weak signals?

While there aren't manual sensitivity controls, the auto-detection algorithm handles varying signal qualities effectively.

Is there support for additional custom modes?

The raw mode allows experimental decoding of unsupported formats, though results may vary.