On impulse tonight I decided to try to capture a night pass from the NOAA 18 weather satellite. Haven't tried a night pass for years so I had almost forgotten how to set up the software. Anyway this is the result showing the mass of cloud about to sweep across the UK bringing snow or rain according to the weather forecasters:
Obviously the land outlines and land colouring were added by the software as there is no visible light picture transmitted at night. The horizontal grey speckles are caused by my receiver picking up some local interference. I have the same problem with amateur radio. One day I will find out what is causing it.
John, I seem to recall that on short wave noise was caused by brushes on gensets. It doesn't take much to denigrate the signal. This is not like that. It could be them, always the first fall back position.
ReplyDeleteAdrian: These days noise levels on HF are constantly high. So many electrical gadgets in the neighbourhood. Cheap wall warts can be the worst offenders. The VHF interference is a short pulse every so often. I have a feeling it may be propagating through the mains electricity wiring.
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