How to Tune In

If you want to do your own decoding of SSTV and NBTV in real time, you should prepare in advance by downloading and installing  some of the free open source software that will enable you to do that. Instructions, links, and links to sample videos are included below.

for people without access to shortwave radio reception equipment, you can tune in online as videos will be streamed on this website.  The live stream will be on the home page of the website.  After each transmission, the live stream will then be archived on the archived videos page.  Each archived video set is a pair of two streams that were transmitted simultaneously in an attempt to mix them together in the ionosphere using the Luxembourg effect.

Another online option is to tune in using a webSDR (web Software Defined Radio).  These are actual physical radio antennas located at different places around the planet that are connected to a software defined radio on the web, that you can control and listen to.  You can connect to a software defined radio anywhere on the planet, and tune around to hear different frequencies in different modes.  Some webSDRs have limits of how many people can be using them at once.  A good starting point to explore webSDRs can be found here:

A google search for webSDR will bring up many other options worth exploring.


Shortwave Radio:
If you are a shortwave radio listener, take a look at the projected frequencies and set up your antennas and receivers accordingly to tune in.  If you do tune in, I would greatly appreciate it if you would submit a reception report using the reception report form on this web page.  There is a place where you can upload images, audio recordings, and video to share with others on this website.

NBTV (Narrow Band Television):
Like Slow Scan Television, NBTV uses an audio signal to encode images.  In this case they are low resolution (36 lines) moving images at 12.5 frames per second.  To decode the audio and convert it into video you can use free open source software such as Gary's "The Big Picture" available for download here:

More info about NBTV can be found on this discussion forum:

Decoding NBTV can be a bit tricky at first, so you may want to record the audio and try decoding later, and/or you might want to practice and get familiar with the software before transmissions. 

Test audio to decode can be found here:  East and West

Original source videos to create the NBTV files are posted on vimeo here: East  and West

Originally, the plan was to attempt to mix the two NBTV videos together in the ionosphere, using the Luxembourg effect, by transmitting them simultaneously on two different frequencies, approximately 500 kHz apart,  In "theory" this meant that the two videos could possibly be mixed together, with one video more prominent than the other.  However, even without the possible mixing of the two videos in the ionosphere, transmission alone of a single signal will likely distort, or completely lose the sync pulse, thus resulting in a rolling image.  Given the difficulty of receiving a single NBTV signal, I opted to abandon the Luxembourg effect for this one, and will be transmitting them in two opposite directions (one toward the light side of the world, one toward the dark side of the world) on frequencies very far apart from one another.  I am interested in this form of abstraction and distortion from propagation and would still be very much interested in seeing recordings of abstract and distorted videos.

A mix of the two source videos is posted on vimeo here, as an example of what they might have "theoretically" look like if the signals mixed perfectly and evenly in the ionosphere (which will not be the case).  This is a standard definition mix which is much higher resolution than the 36 line NBTV version: link to video mix

SSTV (Slow Scan Television):
Some transmissions include SSTV images.  This is audio that sounds like an old modem or fax machine, that can be decoded into an image.  To decode the image you can use free online software such as MMSTV.