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PCIe SDR MIMO 2x2 [84] Pre-built 70 MHz – 6 GHz ? 61.44 Msps 2/2 PCIe (1x) No Yes No PM-SDR [85] Pre-built 100 kHz – 50 MHz (up to 165 MHz using harmonics) 192 kHz ext No External ADC required (I/Q output) ? USB Yes Yes ? PrecisionWave Embedded SDR [86] Pre-built / Customizable Frontends 1 MHz – 9.7 GHz (depending on frontend) 2x RX: 155 MHz
Transmitter hunting (also known as T-hunting, fox hunting, bunny hunting, and bunny chasing), is an activity wherein participants use radio direction finding techniques to locate one or more radio transmitters hidden within a designated search area.
Where F r is the frequency of rotation in Hz and F c is the target frequency in MHz. [ 13 ] [ a ] Consider the example of a truck hunting an FM radio station at 101.5 MHz, while driving around a 100 metres (330 ft) wide pad (50 metres (160 ft) radius) at 25 kilometres per hour (16 mph).
The radio equipment carried on course must be capable of receiving the signal being transmitted by the five transmitters and useful for radio direction finding. This includes a radio receiver that can tune in the specific frequency of transmission being used for the event, an attenuator or variable gain control, and a directional antenna ...
The UV-5R is designed to transmit on the 2 meter band between 136 and 174 MHz and on the 70 cm band between 400 and 520 MHz. (480 MHz to 520 MHz is not available in the UK to comply with Ofcom regulations and are blocked by the manufacturer).
The Lincolnshire Poacher was a powerful British shortwave numbers station that transmitted from HM Government Communications Centre near Gawcott in Buckinghamshire, England, [1] and later from Cyprus, from the mid-1960s to July 2008.
Other applications include antenna testing, frequency stability and frequency accuracy checking. Usually a WSPR station contains a computer and a transceiver, but it is also possible to build very simple beacon transmitters with little effort. For example a simple WSPR beacon can be built using the Si 570, [5] or Si 5351. [6]
A Bellini–Tosi direction finder (B–T or BTDF) is a type of radio direction finder (RDF), which determines the direction to, or bearing of, a radio transmitter. Earlier RDF systems used very large rotating loop antennas , which the B–T system replaced with two fixed antennae and a small rotating loop, known as a radiogoniometer .