Here are some banner's I developed for the Spread Open Media movement. I couldn't upload the svg for some reason, but here are the pngs. There are several different ideas here. I like the "Get SOM" slogan. It's catchy and can have several meanings...but is intended to tell people to support open media file types. I'd appreciate any comments
an image from the US government EPA "Sunwise" program. I converted it from PDF format, and removed all the "sunwise" logos. the source link is here - http://www.epa.gov/sunwise/doc/mission_story.pdf
This is a General Aviation aircraft communication radio that is very common and I created this image in my book for my students to help illustrate proper usage. It has all of the LED digits and you may take them apart to create different frequencies. The frequencies it uses are 118.00 to 136.97 Mhz.