vlf receiver

A VLF loop by IK0VVE - This antenna was born from the demand to use a loop for vlf operations in portable posting, avoiding the aid of long wires to stretch.

Advanced active VLF Loop - Article on using loop antenna in very low frequencies

Oldradios.co.nz - A new zealand radio servicemans personal tribute to old 'boatanchor' valve communications receivers, dx listening posts of the 1950's, early radio literature, vacuum tube (valves) collection, early tube testers, unusual

Combat Radio - Buy old manuals, military radios, kits, receivers online shop

Radio Exchange - A free marketplace for hams and radio enthusiasts to list extra receivers, transmitters, parts and associated items to be posted.

The TubeBug - This site is dedicated to collecting and restoring older professional receivers and transmitters.

W5AM Museum - Receivers and transmitters by Collins , Drake , Hallicrafters , Hammarlund , National Receivers

AOR U.S.A., INC. - Aor u.s.a web site, manufacturer of base and mobile receivers, handheld receivers, digital voice modems, spectrum display units, frequency monitors and antennas

CommsAudit - Commsaudit uk, i/q quadrature , hf receivers, rf, multicoupler, multicouplers, switch matrix, antenna matrices, masthead amplifier,, vhf receiver, uhf,

Gateway Electronics - Amateur radio kits, cw keyers, vhf mini receivers, 2 meter preamplifier and more audio related kits, based in St. louis, Mo and San diego, ca USA

Russia ATV Amateur TV - Digital Amateur Television web sited include a D-ATV transmitter, D-ATV receiver, D-ATV modulator D-ATV schematics by RA3TTS

G4OEP QRSS pages - Pictures of QRSS Signals, a homebrew receiver for 136 Khz

30m QRSS Receiver - G0UPL QRSS receiver inspired by I1DFS receiver

Quad - from Tonne Software - This graphics-intensive program designs and analyzes active quadrature ("90-degree") networks for use in SSB transmitters and receivers.

Linrad - Multiplatoform freeware DSP software. Linrad has its origin in software that was developed for 144 MHz EME CW but it is quite general and should be seen more like a kit for designing a receiver that a receiver for some particular usage. It can be used as a CW receiver with a small time delay and a fast waterfall graph. A dsp for conventional receiver to imporve signals readability, a spectrum analyzer.

DSCdecoder - DSCdecoder decodes the DSC digital signals from ships and coast stations using the sound card in your PC. You need a suitable MF, HF or VHF band radio receiver tuned to one of the DSC distress and calling channels or to one of the Navtex channels

Linrad - An open source software defined receiver for Linux, Free DSP and Windows

CwGet PPC Priority listing - A program to decode Morse code via sound input of PDA to text. No additional hardware required - your need only receiver and PDA with sound input. Built-in microphone of device can be used also.

CallSign Software - HamStationExtreme, hamradiostation and scopestation makers. CallSign Software provides a variety of Radio Control Packages to drive ICOM, Elecraft, and Ten-Tec's latest DSP based Transceivers and Receivers.

FRG-Controller by Frans Vink - Free prgram to control Yaesu FRG 100 SW receiver with a PC

RT Systems - Windows Programming Software by RT Systems for Amateur Radios and Receivers

ATPDEC - Atpdec is an open source program that decodes images transmitted by POES NOAA weather satellite series. These satellites transmit continuously, among other things, medium resolution images of the earth on 137Mhz. These transmissions could be easily received with an inexpensive antenna and dedicated receiver. For more information about receiving POES satellite images consult the rig site.

Receiver block diagram - This is a block diagram of a superhetrodyne receiver.

A good regenerative receiver - A good SSB-CW-AM regenerative receiver with a fine tuning by moving the wooden stick with a grounded piece of PCB towards the coil.

Dual phase Software Defined Radio - Dual phase coherent Software Defined Radio using two K2 Elecraft receivers and programming in Matlab/Simulink.