Search results
Results from the WOW.Com Content Network
For example a simple WSPR beacon can be built using the Si 570, [5] or Si 5351. [6] The Raspberry Pi can also be used as WSPR beacon. Density distribution of WSPR spots, January 2014 vs July 2014, using only most distant reception per spot. An accurate clock is essential both for transmission and decoding of received signals.
A large-scale beacon project is underway using the WSPR transmission scheme included with the WSJT software suite. The loosely coordinated beacon transmitters and receivers, collectively known as the WSPRnet, report the real-time propagation characteristics of a number of frequency bands and geographical locations via the Internet.
WSPR (1490 AM) is a commercial radio station licensed to West Springfield, Massachusetts, and serving the Springfield metropolitan area. The station is owned by John Fuller, through licensee Red Wolf Broadcasting Corporation.
The beacon and a number of other South African stations are running WSPR mode for experimental purposes. (WSPR is configured as Dial Freq USB 5287.2 kHz TX Freq 5288.7 kHz, which is within the channel allocation) 5290.0 kHz: South Africa: ZS1OA: JF95fx: This is a permanent WSPR beacon located at Cape Town. 5291.0 kHz: Switzerland: HB9AW: JN47be
The most basic radio-navigational aid used in aviation is the non-directional beacon or NDB. It is a simple low- and medium-frequency transmitter used to locate airway intersections and airports and to conduct instrument approaches, with the use of a radio direction finder located on the aircraft.
President Donald Trump fired the head of a U.S. watchdog agency focused on protecting government whistleblowers, the official said on Monday in a lawsuit alleging that his removal was unlawful.
Swan also designed a matched, separate receiver and transmitter pair, the 600R and 600T, which together offered better performance, higher output power and many more features than the transceivers could. They were produced in far fewer numbers, however, and are therefore harder for collectors to find today. [5]
The station was assigned the WSPR call letters by the Federal Communications Commission in 1936. Throughout the 1960s and 1970s, the station had a Top 40 format. In later decades, the station had a talk/news approach before shifting to a Spanish tropical format. On April 12, 2016, it changed its call sign to the current WACM. [3]