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SET UP AUDIO PIPING WXTOIMG SOFTWARE
15kHz is too narrow and the decoding software will remind you of this fact! What you need is a tap/feed from the discriminator (this modification can be done to a lot of scanners) as this is taken before the IF filtering takes place so 40kHz (40kHz is ideal for the NOAA satellites) would be no problem. A scanner, such as my Yupiteru MVT-7100 does cover these frequencies but their IF bandwidth is usually fixed at about 15kHz in Narrow FM mode (250kHz in Wide FM mode). Also, the Airspy is very well suited to this kind of task. The FCD is a great receiver for this as the bandwidth can be set to the 40-50kHz necessary to decode the finer detail. Both of these antennas are used by weather satellite enthusiasts. You will get reasonable results from even an indoor / attic mounted antenna but not as good as an outside one. That is the ideal, but as we live in a less than perfect world, just get it in the best position you can. Whichever type of antenna you choose, try to mount these high as possible and in the clear, so the antenna has an unobstructed view of the sky in all directions down to the visible horizon, or as close as it possible to get. If you, like me, are not great with plumbing and bending / brazing copper pipes, perhaps you may be able to get a friendly plumber to help with the mechanical side. If you possess the necessary skills and have the right equipment to construct it, then it should be fairly straight forward. A quick look on the web will reveal a whole host of DIY plans for QFH’s. The QFH comes in 2 main types: ‘short and fat’ or ‘tall and thin’, which describes the method of construction. Something like a ‘turnstile’ (shown below) or a ‘QFH’ (QuadriFilar Helix) antenna would be ideal. To stand the best chance of getting good, reliable, decodes an antenna that has ‘Right Hand’ Circular Polarisation(RHCP) should be used. I will attempt to decode one soon, in the hope the procedure has been made easier, as the last time I looked it was rather involved. There are other weather satellites on 137MHz, the Meteor satellites, which produce higher quality images, but I have not tried to decode one yet. Doz.Now that I am getting more interested in VHF, I thought I would try my hand at decoding signals from the NOAA weather satellites that are on 137MHz. I currently work as an engineer in the broadcast industry, and, until that changes, this will just remain a hobby. There are a few "Makerspaces" dotted around the country, and they may be willing to help.
SET UP AUDIO PIPING WXTOIMG TV
There are still a few TV repair places dotted about, a good few repair cafe's operate up and down the country, and see if you can find a tame radio ham who may share some of their knowledge and experience. I never dreamed anyone else would find it interesting, and yet, I get around 200 people visiting everyday, which astounds me even to this day. It was a friend that suggested I should make it all public, so I did. It all started out with a simple website to actually document what I was doing, rather than making copious notes on paper, which I'd been doing since the late 80's.
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It's really for my own enjoyment and entertainment. The idea is to give my readers an insight into what's involved, and enable them to fix their own gear, (within the realms of safety of course), and I'll always help if I can. I don't take on repairs on a commercial basis. I repeatedly get requests, via messaging etc, asking me to fix their kit for them.
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Sudo echo "1" > /sys/class/gpio/gpio24/value Sudo echo "out" > /sys/class/gpio/gpio24/direction Schedule_all.sh needs the following lines at the end. Schedule_all.sh and receive_and_process.sh To drive the LEDs, there are two bash scripts to alter.