CompuServe Thread

Ok – shortwave. Most noticable FAX outlet that you will hear in the US is on 8080.0 KHZ, out of Virgina. This outlet runs 24 hrs/day, and broadcasts series of wind-flagged, pressure marked, and long-term average condition maps. In addition, they broadcast (about 2 an hour) images obtained from Geostationary satellites that are about 1/4 images of the globe – 16 grey level, and quite detailed – and _fascinating_! Now for the GOOD news… I am working on (and expect to complete very soon) software that, besides handling SSTV on the AMiga in many wild and wooly ways, will recieve these fax images right into the system. Looks like a simple-to-build interface, too. I'll let everyone here know when it's ready, of course, but in the meantime, The signals are there and if you can pick up an alden fax printer, you can see this stuff right off. FAX signals are (on shortwave, this applies to) 1500hz=black, and 2300hz=white. Grey levels are any value in between, linearly figured from frequency differences. For instance, for 16 grey level definition, figure 53hz/step, more or less. There are other fax freqeuncies too, of course – many of them – but that one is the easiest to hear.