receiver

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receiver

491 links - and 13 categories

Antennas : Receiving
  • RX Loop antenna - This loop antenna is intended to be connected as an antenna for receivers that do not have a built-in antenna such as an HF set or an old tube radio. This square barrel is wound on a wooden frame. It consists of two windings that are galvanically isolated from each other, a main and a coupling winding. The diameter is about 40 cm.
    [ Hits: 60 | Votes: 0 | Rating: 0 ]
Antennas : WiFi
  • Cloverleaf Antenna - Cloverleaf antenna is a circular polarized antenna which is way better than the cheap dipole antenna that comes with video transmitters and receivers. The Cloverleaf is a closed loop antenna which the signal and ground wires are connected. The cloverleaf antenna has 3 loops at 120 degree apart, and they are titled at 45 degree to horizontal plane.
    [ Hits: 64 | Votes: 0 | Rating: 0 ]
Internet and Radio : WebSDR
  • SR4DON Web Radio Receiver - OpenWebRX online radio receiver from Olsztyn Poland 10-15 meters bands, 50 MHz VHF UHF bands.
    [ Hits: 184 | Votes: 1 | Rating: 10 ]
  • DK0TE KiwiSDR Germany - Online internet HF LW MF web receiver based in Baden-Wuerttemberg cooperative state university Ravensburg Campus Friedrichshafen running a T2FD antennan under roof.
    [ Hits: 260 | Votes: 2 | Rating: 10 ]
  • DK0TE WebSDR Friedrichshafen - This is a WebSDR receiver, located in Friedrichshafen, Germany (at Lake Constance) using a multiband dipol and a FUNCube Dongle Pro+.
    [ Hits: 178 | Votes: 3 | Rating: 10 ]
  • WebSDR from Croatia - WebSDR receiver located near Krizevci, Croatia with 0-2 MHz, 60-80 meters band and 40-49 meters band
    [ Hits: 171 | Votes: 2 | Rating: 8.5 ]
  • Iceland WebSDR - KiwiSDR Software-defined receiver at Bjargtangar Iceland covering HF Bands
    [ Hits: 238 | Votes: 1 | Rating: 9 ]
  • I5HGM KiwiSDR - A software defined receiver located in Tuscany Italy with a Windom antenna convering HF bands
    [ Hits: 170 | Votes: 2 | Rating: 10 ]
Manufacturers : Interfaces
  • Digirig Mobile - Digirig is an open-source integrated digital modes interface for amateur radio. As a differentiating feature, Digirig only requires a single USB connection to the computer with all the digital goodness packed in a single small enclosure. The internals include a USB hub, audio codec, a fully featured serial CAT (Computer Aided Transceiver) interface, and potentially other modules such as GPS receiver for time synchronization.
    [ Hits: 148 | Votes: 1 | Rating: 2 ]
Operating Aids : Maps
  • KiWi WebSDR Maps - A live map of current KiWiSDR receivers available on the network taken directly by the KiwiSDR Site
    [ Hits: 354 | Votes: 3 | Rating: 10 ]
Radio Equipment : Receivers : Icom IC-R75
  • ICOM IC-R75 Review by N9EWO - Icom IC-R75 tabletop HF communications receiver came onto the market back in 1999 and was taken out of production in late 2015. Frequency coverage is from 30 hz right to 60 MHz. This allows one to catch the 6 Meter amateur band as well.
    [ Hits: 44 | Votes: 0 | Rating: 0 ]
Radio Equipment : Reviews and Comparisons
  • Explaining ARRL Radio Tech Reviews - Explaining ARRL Technical Reviews of Radios a brief tutorial on radio testing. The ARRL Lab tests radio equipment according to standardized test procedures, using calibrated professional test equipment. Info on transmitter and receiver tests
    [ Hits: 118 | Votes: 0 | Rating: 0 ]
Software : Software Defined Radio
  • Quisk - Quisk is a Software Defined Radio (SDR) and is the software that controls my receiver and transmitter. Quisk can control the HiQSDR, Hermes-Lite hardware, SoftRock hardware, SDR-IQ by RfSpace
    [ Hits: 68 | Votes: 0 | Rating: 0 ]
Technical Reference : Filters
  • 20m 30m 40m Bandpass Filters - Homemade LC Bandpass Filters for 20M, 30M, 40M In multi-station environments like special events, field day, portable operating, is very important to protect receivers from excessively strong signals. Bandpass filters help to protect your transceivers.
    [ Hits: 376 | Votes: 1 | Rating: 10 ]
Technical Reference : Radio Direction Finding
  • JUNIOR-2 ARDF receiver - The JUNIOR-2 presented here is a competition direction finder receiver that is easy to build and tune, but has all the features of the "big" receivers. It is especially suitable for beginners, young people or youth groups who have so far refrained from purchasing a 2m direction finder receiver for financial reasons.
    [ Hits: 90 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference
  • Understanding computer-generated RFI - Radio Frequency Interference (RFI) has always been a source of concern for the Radio Amateur. Until the recent introduction of complex circuitry in the home, our communications gear has been the main source of potential RFI. In this computerized age of ours, increasingly complex and sensitive receivers are being barraged by these and other sources of RFI.
    [ Hits: 84 | Votes: 0 | Rating: 0 ]
Technical Reference : Receivers
  • Blocking Dynamic Range in Receivers - An explanation of the different procedures and definitions that are commonly used for blocking dynamic range (BDR) measurements. Dynamic range in general is the ratio between the weakest signal a system can handle and the strongest signal the same system can handle simultaneously without an operator switching attenuators or turning volume potentiometers
    [ Hits: 169 | Votes: 0 | Rating: 0 ]
  • General Coverage Receiver LW MW SW - This is a compact three transistor regenerative general coverage receiver with fixed feedback. The sensitivity and selectivity is relative good, especially on the LF and MW bands, as can be expected with this simple design.
    [ Hits: 194 | Votes: 0 | Rating: 0 ]
Technical Reference : Software Defined Radio : RTLSDR
  • How RTL-SDR dongles work - Since 2012, the RTL-SDR is the simple and cheap way to give Software-Defined Radio a try. For about 25 euro you get a receiver covering much of the VHF and UHF range, and by either adding an upconverter, or using the direct sampling option, also the HF bands. They are so cheap because they are mass-produced as DVB-T receivers.
    [ Hits: 128 | Votes: 1 | Rating: 10 ]
Technical Reference : Transverters
  • 2m to 70cm Transverter Circuit - A 70cm / 432 MHz Transverter Project transverter circuit is an electronic device that converts a radio signal from the 2 meter to the 70 centimeter band and vice versa, allowing a single transmitter/receiver to be used for both bands. It consists of an IF stage, local oscillator, frequency multiplier, and amplifier. The circuit must be designed for minimal signal loss, noise and intermodulation distortion.
    [ Hits: 77 | Votes: 0 | Rating: 0 ]

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