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hf - What is this burst transmission sequence across the entire band? - Amateur Radio Stack Exchange
![See-The-Spectrum-Analyzer-Waterfall-Display-Funny-Ham-Radio" Art Board Print by hcsby247 | Redbubble See-The-Spectrum-Analyzer-Waterfall-Display-Funny-Ham-Radio" Art Board Print by hcsby247 | Redbubble](https://ih1.redbubble.net/image.1812715695.1971/flat,750x,075,f-pad,750x1000,f8f8f8.jpg)
See-The-Spectrum-Analyzer-Waterfall-Display-Funny-Ham-Radio" Art Board Print by hcsby247 | Redbubble
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Graffiti in waterfall display? Appears every 10 mins near 40m WSPR frequency for the last hour : r/amateurradio
![See-The-Spectrum-Analyzer-Waterfall-Display-Funny-Ham-Radio" Photographic Print by hcsby247 | Redbubble See-The-Spectrum-Analyzer-Waterfall-Display-Funny-Ham-Radio" Photographic Print by hcsby247 | Redbubble](https://ih1.redbubble.net/image.1812715704.1971/fpp,small,lustre,wall_texture,product,750x1000.jpg)