signal analysis

East Tennessee Weak Signal Association Priority listing - Dedicated to the use and advancement of amateur radio vhf/uhf weak signal communications

What does DX mean - DX is an old radio term used by radio enthusiasts, it stands for the long-distance reception of radio signals, DX being a short-form way of saying distance-extreme.

Amateur Radio Astronomy - A radio-telescope project observing the natural radio emissions of neutral hydrogen atoms throughout space.

F4DAY technical website - ATV and high speed data signalling projects

Digital signal processing - Frequently asked questions on Digital Signal Processing

Digital Monitoring Site - Digital signale transmitted in HF-UHF-VHF, in italian

G4CCH EME 1296Mhz - News of latest radio activity, initial contacts list, recordings of EME signals, information about station, and overview of latest projects.

The KM5ES 2 Meter SSB Homepage - All about 2 meter SSB weak signal operation's,HSCW,SWOT

N5KDA Gary - Ham Radio, Meteor Scatter,Backscatter Meteors, WSJT, JT65B, weak signal,Vhf Ham Radio, VHF two meter meteor skeds, dx, cw and EME

VHF+ Weak Signal Site of VE2PIJ - VHF+ Weak Signal Site

WA1OUB 50 MHz Es/E/F2 propagation - This page represents 50 MHz Es/E/F2 propagation analysis with Europe and N. Africa to WA1OUB.

Interval Signals Library - Collection of audio clips of foreign radio stations, with identification announcements in various languages, signature tunes and jingles, and of course interval signals

Antenna Solver - provides much greater flexibility in the construction, analysis, and interpretation of radiating structures using a rewritten NEC module.

Vox Recorder  ^{updated  pop} - Vox Recorder is a Windows utility wich allows recording sound from an audio source only when an audio signal is present; its main purpose is to avoid the recording of the silence eventually present at the input. Vox Recorder has been designed in particular for radio-scanner hobbists.

BeaconSee - BeaconSee shows you, in real time, worldwide HF band openings on your PC. Analyses the audio signals from your radio, which is tuned to the NCDXF IARU HF beacon network and shows you the signal strength received from each of the 18 beacon transmitters as a plot of frequency spectrum against time.

WSJT High Speed Meteorscatter - "Software uses four-tone frequency-shift keying for meteor scatter. WSJT stands for ""Weak Signal communications, by K1JT"", and plans call for the program to include more than one communication mode."

Shacklog - Quality logging software for the Radio Amateur & SWL, real-time and post-event QSO logging,log analysis and reporting, QSL label printing, country status display, rig control, import of logs, interface to CallBook CD-ROMs

Bonito RadioCom - Decode digital and analog signals out of any high quality Transceiver or Receiver, works as a DSP-analyzing system

Monteria - International Commercial supplier of HF, VHF and UHF signals analysis and receiver control hardware and software

Spectra - Accurate spectrum analyzer in the range 0 - 2500 Hz, makes an accurate FFT analysis of an audio signal coming from the soundcard

Radio Clock - Enables you to decode the time signals sent by various LF and HF radio stations in the standard frequency and time service

Frees - Calculates the freespace range of a radio-link. It is useful for radio amateurs, radio engineers and for SETI signal estimations. Calulation of parabolic dish antenna-gain is included.

Vox Actuated Recorder for Windows - Vox Recorder is a Windows utility wich allows recording sound from an audio source only when an audio signal is present; its main purpose is to avoid the recording of the silence eventually present at the input.

Mode J Desense Filter - This type of filter can be used in a Mode J satellite station (uplink on 2m, downlink on 70cm) to reduce the problem of the uplink signal desensing the receiver

DSP-10 2-meter DSP transceiver - The DSP-10 is an amateur-radio, software-defined 2-meter transceiver that can be built at home. It operates not only on SSB, FM and CW, but also on four Weak-Signal modes. Features are tailored to operation on VHF, UHF and Microwave frequencies. By W7PUA