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Ever wondered what goes on behind the scenes of the Chicago Police Department? Listen to Chicago police live audio feed from different district zones. Broadcastify offers a free stream of live Chicago PD radio transmissions! Stay informed about real-time incidents and hear police communication firsthand. This official feed allows you to experience the fast-paced world of Chicago law enforcement, directly from your browser. Be aware that some broadcasts may be delayed or encrypted for privacy reasons.

Audio Spectrum Analyzer for Real-time, FFT, OscilloScope, Frequency counter, voltmeter, noise and distortion meter, phase shift meter. Multi-Tone Sound Frequency Sweep Generator. White, pink noise.

Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.

SSTV freeware software for Windows by Mako JE3HHT. MMSTV is a free software application designed for transmitting and receiving SSTV (Slow Scan Television) images over HF bands. It allows radio amateurs to share still pictures using sound-card interfaces and a transceiver. The program supports popular SSTV modes (Martin, Scottie, Robot, etc.), real-time RX/TX monitoring, and easy image editing. Its user-friendly interface and reliability make MMSTV a favorite choice among ham operators worldwide. Ideal for showcasing QSL cards, shack photos, or technical diagrams over the ai An excellent SSTV program that requires only a computer with soundcard, no expensive TNC required. Works on all Windows version including Windows XP, Vista and Windows 7.

Audio Spectrum Analyser Spectrum Lab or Speclab started as a simple FFT program running under DOS a long time ago, but it is now a specialized audio analyzer, filter, frequency converter, hum filter, data logger and more. Can be used for MTHELL QRSS, DFCW, PSK, MSK, Castle. Spectrum Lab is a free audio analysis tool, lets you see the hidden world of sound. It analyzes live audio or recordings, showing you the exact frequencies present. Watch sounds change over time with a waterfall display. Need to clean up your audio? It can filter out noise in real-time. Even play with radio signals by decoding and creating special modes! While ideal for amateur radio enthusiasts, anyone can explore the science of sound for free.

Footprint Satellite Tracker is a satellite tracking software that provides real-time monitoring of satellite movements worldwide. It features a global map with celestial markers and allows users to adjust time settings to predict satellite paths. Customizable options include location coordinates and time zones. Users can analyze satellite ephemeris and print reports, though file-saving requires a virtual printer. Despite its research utility, the software supports a limited satellite list and lacks options for manual data source connections. Current version has been tested running on Windows 10.

Select your favorite satellite and watch its trajectory on Google Maps in real time! Includes ISS tracking, Weather, Geostationary, GPS Military, and of course Amateur radio satellites. N2YO provides comprehensive real-time satellite tracking with particular emphasis on amateur radio satellites. The service offers precise pass predictions calculated for user-specific locations, displaying upcoming passes with azimuth, elevation, and duration data essential for ham operators planning satellite contacts. N2YO features dedicated tracking for amateur radio satellites including FM, linear transponder, and digital satellites, with frequency information and downlink/uplink details. The platform delivers live tracking visualizations on interactive maps, Doppler shift calculations, and automated email notifications for upcoming passes. This free resource integrates weather satellite tracking alongside NOAA imagery, making it invaluable for radio enthusiasts pursuing satellite communications.

The webpage provides a live scanner radio feed for Dallas Ambulance, Fire & Police. Users can listen to real-time updates on public safety communications, including emergency services and law enforcement.

The web player offers live radio scanning of public safety frequencies in Orlando, Florida, including Orange County Fire Rescue, Orlando Fire Dept, Winter Park Fire Dept, and Orange County MedCom, PSAP. Users can listen to real-time emergency radio communications.

acarsd is an ACARS decoder for a LINUX or Windows PC which attempts to decode ACARS transmissions in real-time using up to three Soundcards. acarsd is also a realtime ACARS Server, for the worldwide spotter and ACARS community.

CQLog is a powerful logging program for Windows. It provides a comprehensive control centre for everyday on-the-air activities, including: full-featured logging of QSOs; statistics for many awards (for LoTW and eQSL capability); support for QRZ, RAC, GOLIST databases. You can save up to 3 pictures for each SSTV-QSO. Two-way data exchange with MixW2, and DigiPan. Integrates with DX Atlas. Real-time upload of QSOs to eQSL.cc. The program also offers a "contest-mode"; supports CAT systems for YAESU, ICOM, KENWOOD, Ten-Tec. Prints QSL cards, and QSL labels, addresses envelopes.

Soundcard audio tools and toys, experimental ideas and utilities. Signal Generator, Frequency-counter / instrument-tuner, Real-time Spectrum Analyser

Satscape is a freeware program for the PC Macintosh and Linux. It produces real-time displays of where any Satellite is, and predicts passes for your locale. There are about 8000+ satellites in orbit, a lot of these are just junk and debris such as discarded rocket bodies, but quite a few are working Satellites.

Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.

Axis Spectrum Analyzer allows you to record audio along with sincronized 31 band spectrum analyzer readings from any audio source to be inputed into Macromedia Flash movies in an easy to integrate way. The software can also be used to display real-time audio with customized visuals on video devices such as projectors, tvs,etc.

A free (GPL) Linux (Xwindows GUI-based) utility that performs spectral analysis on real-time data from a sound card or other source, and can analyze the spectra of various sound file types. It can also accept data from many kinds of applications in plain-text form by way of the "named pipe" feature of Linux

FREE amateur radio logbook for Windows, Year 2000 compliant, Real-time or post-event data-entry, Produces QSL cards and address labels, Produces RSGB VHF-UHF-SHF Competition Log Sheet and more, by G7LFC

Program designed to do spectral analysis and real-time audio filtering on reception of audio signals for EME, VLF, SETI applications. Offer support for MTHELL, QRSS, DFCW, NDB, WSJT by I2PHD

This map can be used to determine the frequencies that will always be returned to the Earth. Transmitted frequencies higher than the indicated contours (which are given in MHz) may penetrate the ionosphere, resulting in lost power to space. The map shows the radio auroral zones as green bands near the northern and southern poles.

On the Satellitenprogram of DJ0SX Peter one can provide time schedules for over 500 satellites or count 23 satellites real-time imTextmode. The large advantage exists in thought out and of long observation practice which are due flexibility in the selection and the requirements to a satellite program. The program runs under Windows 95/98, NT, XP, 2000

DXFun Web Cluster is a Spanish-based DX Cluster website with chat, propagation reports, solar status, and DX news. Provides special features for registered users like filters, use of tools for calculating dxcc status. Dedicated reporting tools display spots reports with real time graphs that show the most used frequency bands, break by modes, cw ssb or digital modes.

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

JTDX (JT Digital Modes for Linux, MacOS and Windows) is a free, open-source software for amateur radio operators for the reception and transmission of digital modes, including JT65, JT9, and FT8, among others. JTDX is designed to provide improved decoding of weak signals and better usability compared to other digital mode software like WSJT-X. It also has features like a real-time spectrum display, logging, and decoded message storage and retrieval. Download JTDX from the official site.

SWIFT WX Version 2.0 combines a powerful GIS mapping engine with real-time weather maps and storm tracking data making it the most comprehensive storm tracking application available.

OpenTracker+ and Tracker2 series APRS devices for real-time vehicle tracking, weather monitoring, and remote telemetry, aprs tracker manufacturer.

The website offers a comprehensive guide on high-frequency (HF) skywave propagation for amateur radio operators. It explains HF radio propagation fundamentals, including electromagnetic wave properties, HF bands, and propagation modes like skywave, ground wave, and line-of-sight. The site focuses on the ionosphere's critical role, influenced by solar activity, in refracting HF waves for long-distance communication. Real-time monitoring tools such as DX clusters, beacons, and digital modes like FT8 assist users in tracking band activity and propagation conditions globally. Forecasting methods are detailed, highlighting scientific insights into solar-terrestrial interactions and ionospheric variability. The guide also covers advanced topics like NVIS and gray line propagation, ionosonde data, and propagation prediction models, making it a valuable resource for ham radio enthusiasts aiming to optimize communications

RCKLog is a windows freeware program for logging and administration of SSB and CW-Contest with simultaneous control of transceiver and real-time operation of Packet-Radio.

High frequecy and VHF radio propagation data, solar and geomagnetic real-time and historic data, as well as forecasts. A comprehensive propagation resource compiled by Tomas Hood, editor of the propagation columns of CQ, CQ VHF, Popular Communications, and Monitoring Times magazines. Solar Weather, Geomagnetic, Aurora, Ionospheric reports via eAlerts and webpage. WAP phone access. Live and educational resources, and more.

How to track aircraft within a 100 mile radius and plot their positions on a real-time display for about 25 USD QST Article

Provide radio operators with current data on the state of the ionosphere. Real-time Displays, Recent Space Environment Reports, Ionospheric Data Sets, Summaries & Medium Range Forecasts

MFSK is an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions, but not intended for contesting or Bulletin Board System (BBS) use. It is a half-duplex non-Automatic Repeat ReQuest (ARQ) forward-error-correcting (FEC) mode. It performs well on long-path fading conditions and in the presence of interference

Real-time HF propagation conditions for iOS. WaveGuide ia a ham radio utility for determining HF propagation conditions at the touch of a finger.

You can now build and run your own ADS-B ground station that can be installed anywhere and receive real-time data directly from airplanes on your computer

MacOSX real-time precision signal / waveform generator. Uses native Mac sound Out capabilities.

NU-Tech is a powerful DSP platform to validate and real-time debug complex algorithms, simply relying on a common PC. Thanks to an easy plug-in architecture, the developer can write his own NUTSs (NU-Tech Satellites) in C++ and immediately plug them into the graphical interface design environment.

Free real-time Earth Space 4-D global 4-D ionosphere using Google Earth, by CAPS/ES4D Gateway

PDF document for IC-7300 beginners. The ICOM IC-7300 is an HF + 6 meter, multi-mode, self-contained Software Defined Radio (SDR) transceiver with knobs, buttons and a touch screen. It also has a real-time spectrum display with pan adapter and water fall displays.

Interactive home for radio contesters. Includes scores database, access to contester chat, forums, real-time posting and near-real-time news feed.

Real-time dashboard with 3000km optimal working & maximum usable frequency as well as maximum NVIS frequency; all for your internet access location.

This map shows real-time radio propagation from stations operating on 11 bands between 1.8 and 54 MHz in the amateur radio service. The display shows world-wide activity from the last 15 minutes and is automatically updated about every minute. Data for the map is gathered from several online sources: WSPRnet, Reverse Beacon Network (CW, FT4, FT8), PskReporter, and DX Cluster.

Online world map with live updates from the DX Cluster network, displaying new spots on the maps as they appear. Filtering options are available including bands, source continent and dx continent.

AudioXplorer is a sound analyzer software designed for Mac OSX, provide a real-time analysis window where you can visualize the sound spectrum and sonogram

VHF – Based on realtime APRS reports. This map shows real-time radio propagation from stations operated near 144 MHz. It uses data gathered by Automatic Packet Reporting System-Internet Service (APRS-IS) from packet stations in the amateur radio service. The map shows activity from the past hour. Paths are smoothed to create a color-coded footprint indicating the distance VHF signals are likely to be traveling.

MFSK is an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions, but not intended for contesting or Bulletin Board System (BBS) use. It is a half-duplex non-Automatic Repeat ReQuest (ARQ) forward-error-correcting (FEC) mode. It performs well on long-path fading conditions and in the presence of interference

DXCluster spots rendered on a Real-Time Azimuthmal Map centered on a custom callsign

CWirc is a plugin for the X-Chat IRC client to transmit raw Morse code over the internet using IRC servers as reflectors. The transmitted Morse code can be received in near real-time by other X-Chat clients with the CWirc plugin

Providing real-time weather spotter reports for the following counties: Delaware, Fairfield, Fayette, Franklin, Hocking, Licking, Madison, Pickaway, Ross and Union.

High frequecy and VHF radio propagation data, solar and geomagnetic real-time and historic data, sunspot activity reports, as well as forecasts. A comprehensive propagation resource compiled by Tomas Hood, editor of the propagation columns of CQ, CQ VHF, Popular Communications, and Monitoring Times magazines.

Official aprs.fi iOS app, immediate real-time visibility to APRS traffic near you and around the world.

Raspberry Pi to Clublog bridge that consumes broadcasted QSOs from N1MM, transforms the QSOs into ClubLog ADIF format and sends those QSOs in batch or real-time to ClubLog automatically