Originally Posted by reconrider8
Its one of the settings on the SDR site not sure what it does though
"autonotch" on the Twente remote SDR is an auto notch filter. A filter that automatically notches out some types of noise. Unless you have interference in the form of a steady tone there is no reason to use autonotch when monitoring any of the HF-GCS freqs, or any other frequency for that matter.
By the way, in the chat for the Twente SDR are MANY badly mistaken concepts and statements being passed around. Things like "Skyking messages with one Skyking is good, 2 is bad, 3 is worse, 4 is war" (talking about the number of times Skyking is said in one transmission) and completely ridiculous stuff like that. One user stated that an authentication of an EAM that was Whiskey Hotel meant it was originated from the White House. This was taken as gospel and was still being repeated three days later. There are regular incorrect comments about the Morse code that is sometimes heard near HF-GCS freqs as carrying special significance.
While the Twente SDR, and similar remotes, is a great tool, be aware that the average user in that chat has no radio background and generally no concept of what is happening on the radio. Often their understanding of Utility monitoring is, to say the least, extremely restricted. Many times they repeat flat out wrong information, because it sounds "cool". The number of uniformed users to knowledgeable monitors, at least as far as comments in the chat go, is probably on the order of 10 to 1 or greater. A couple of hours ago I opened the chat box there and I saw 20 lines of comment, 18 of them contained errors as far as Utility stations goes, things like “8980 USB, voice and encrypted data”, when the “encrypted data” in question is actually an image of the 27 MHz pager system mounted near the receiver, and the image is actually on about 8983.5 kHz (c/f), in other words, not only were the two transmissions unrelated, but they were not even really on the same frequency, although both fell within the audio passband selected. Another great one that is repeated often is the jamming or encrypted data (either, according to several sources there) that is periodically sent on 8992 kHz. To be sure, there is sometimes data sent on that freq, but the signal being referred to is an atmospheric sounder that sometimes hits around that freq (example here Radar or Sounder, 8992 kHz, April 17, 2011, 1510 UTC - YouTube
Take everything said in that chat with a large grain of salt until you can confirm it some other way. While there are some very well informed users there the average is pretty clueless. Of course, everyone starts out in this hobby that way, but when you combine no real knowledge of the hobby with people looking for sensationalism that can get pretty far out there.