Robot36 - SSTV Image Decoder

Ahmet Inan

About this app

Following SSTV modes are supported:

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

Old B/W or unsupported modes can be viewed in "Raw" mode.

On detection of the calibration header of a supported mode, the resulting image will be automatically saved to the "Pictures" directory and can be seen in the Image gallery.

With version 2, running the decoder in the background will not be supported anymore.

Ratings and reviews

Hey Ahmet, this app works really well at decoding, and that's without using a HAM radio and just playing back SSTV audio from YouTube. One note, and this doesn't affect the rating: it seems like Scottie DX peaks out the microphone and causes the app to switch to RAW for second intervals, which causes cyan-line artifacting that prevents images in that format from saving. Not your fault though, just a side effect of my mic being just OK. Everything else works great though!

Works very well and produces clear images from the I.S.S. on my Lenovo P2 running stock Android 6.1. Thanks Dev(s). Edit: On a digital display radio or VHF/UHF channelised squark box you can guess and dial in the frequency by assuming the frequency, but absent such a display it gets to be hit and miss trying to zone in on the required audio frequencies. Could be lack of understanding on my part but I get a kick out of deciding images from an old Mizuho hand held crystal controlled transceiver!

My go-to for portable ISS chasing. The only other essentials are a good quality HT and a manually aimed tape measure yagi. I use an acoustical link to assist with aiming and polarization issues. Get ready, another ISS SSTV experiment is scheduled for April 2026! Upload received images and receive your diploma!

What’s new

- added French translation
- added asynchronous HFFAX mode
- added frequency markers
- updated libs and tools