Web sdr morse decoder12/13/2023 ![]() Welcome to Reddit's own amateur (ham) radio club.You can record a raw IQ data stream using something like.Please read our FAQs before posting | Save "I Just Got Licensed" threads for Monday's Sticky| Welcome! ![]() The data reduction between the two is just too large for the clients to matter. In general, ookd matters for performance, but the clients don't. The clang code is faster than the gcc code with the compilers in Debian Wheezy. This is almost entirely because I am doing floating point math and I suspect it is all soft float because of my Debian variant. On an original BeagleBone at 250ksps ookd will consume about 30% of the CPU. (That see's limited use and you could patch around it easily if you need to.) Just be happy I refrained from using blocks in clang for the sake of gcc users. It also needs to support the non-standard () statement expression extension. C99 compilerĮither gcc or clang works fine. If you would rather use a hardware 433MHz receiver you could dispense with the SDR section and multicast pulse data directly from your receiver's data line. If that is a problem for you, then write your own rtl-sdr replacement. Although I have licensed my code freely, this rtl-sdr is GPL2 and propagates its GPL2 requirements to my code if you distribute a binary. Rtl-sdr uses the software defined radio in common USB TV receivers to capture raw RF data and deliver it to your process. If you feel you must send me a Windows patch, make it very clean. ![]() The rtl-sdr library and the ook library itself are linked statically toĪvoid build complexity. This outputs the transmitter code to stdout and can also send statistics to StatsD server. Nexa decodes ON/OFF signals for Nexa wireless units ( ) of the smart home. This saves a json file with the current observations and also writes periodic files of accumulated data. If you getĪ burst or two of 88 pulses every 45 seconds, you are probably a wh1080. Wh1080 decodes weather information from Fine Offset wh1080/wh1081 based weather stations. Protocol and if you are lucky how to set the parameters to an alreadyĮxisting function to convert your pulse stream into an array of bytes. ![]() You will find it useful for understanding your device's Ookdump is a client which characterizes and dumps receivedīursts. Pulses, and the plausibility of the data to decide if it has receivedĪ valid message from a device it understands. Would look at the length of the pulse stream, the length of individual Type of device will have its own decoder process. For development simplicity it is envisioned that each You should not needĭecoding processes receive the multicast pulse bursts and attempt In a typical environment ookd will receive and performĬomputation on 2MB/s and pass on less than 100B/s. ookd doesn't know anythingĪbout any specific protocol. When it finds a pulse burst it multicasts the pulses to anĪrbitrary number of listens. Ookd receives and analyzes the RF data looking for bursts of Protocols imagined by the engineers, to that end, this software is It seems unlikely to imagine a general solution to decode all of the Generally there are one or more start pulses to let the receiver'sĪutomatic gain control (AGC) sort itself out before the data comes Sometimesĭistance between the pulses carries the data, or carries bits of its Used to encode ones and zeros in an arbitrary polarity. Typically short pulses and long pulses are These devices are generally cobbled together by embedded systemĮlectrical engineers who didn't study advanced encoding techniques,īelieve in simplicity, and are using the smallest, cheapest Telemetry devices like weather stations, remote thermometers,Īlarm systems, and other remote sensors. Industrial, Scientific, and Medical (ISM) radio bands (433MHz, 900MHz, and others) by simple In modern times OOK is commonly used in the On-Off-Keying (OOK) is a simple radio modulation scheme where theĬarrier is pulsed on and off to encode data.
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