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IEEE 1394 cable (2 power, 4 signal): 4.5 m 100 m 63 devices (800 Mbit/s) 354.17 μs 192 kHz [l] Optocore [m] Dedicated fiber Synchronous Dedicated Cat5/fiber Proprietary Ring: Redundant ring MM=700 m, SM=110 km Unlimited 1008 channels at 48 kHz 41.6 μs [8] 96 kHz Q-LAN: 2009 IP over Gigabit Ethernet: Isochronous
The VOR station transmits two audio signals on a VHF carrier – one is Morse code at 1020 Hz to identify the station, the other is a continuous 9960 Hz audio modulated at 30 Hz, with the 0-degree referenced to magnetic north. This signal is rotated mechanically or electrically at 30 Hz, which appears as a 30 Hz AM signal added to the previous ...
The phasing method for the generation of single sideband signals uses a network which imposes a constant 90° phase shift on audio signals over the audio range of interest. This was difficult with analog methods but with DSP is very simple. These audio outputs are each mixed in a linear balanced mixer with a carrier.
The radio equipment carried by competitors on a course must be capable of receiving the signal being transmitted by the five transmitters and useful for radio direction finding, including a radio receiver, attenuator, and directional antenna. Most equipment designs integrate all three components into one handheld device.
Beam steering is a technique for changing the direction of the main lobe of a radiation pattern.. In radio and radar systems, beam steering may be accomplished by switching the antenna elements or by changing the relative phases of the RF signals driving the elements.
Link adaptation, comprising adaptive coding and modulation (ACM) and others (such as Power Control), is a term used in wireless communications to denote the matching of the modulation, coding and other signal and protocol parameters to the conditions on the radio link (e.g. the pathloss, the interference due to signals coming from other ...
WSPR (pronounced "whisper") is an acronym for Weak Signal Propagation Reporter. It is a protocol, implemented in a computer program, used for weak-signal radio communication between amateur radio operators. The protocol was designed, and a program written initially, by Joe Taylor, K1JT. The software code is now open source and is developed by a ...
Despite the fact that all the old source and binary builds licensed as an open-source has been deleted from SourceForge by developer in 2019, few code snapshots of original code and a fork of rattleCAD 3.x, hosted on GitHub, [36] [37] [38] and binary of the last open-source rattleCAD 3.6.30 and older releases, still circulated on the internet ...