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• TubeRadioDoc - Vintage Tube Radio's from Germany for sale. High class restorations for all valve radios offered. Radio Brands like Saba, NordMende, Majestic, Grundig, Zenith, Philco and more. TubeRadioDoc Vintage Audio Store
  [ Hits: 491 | Votes: 2 | Rating: 9 ]

• Big Bear Scanner Live - Located in Big Bear City, CA (Shay Meadow). Streaming 24/7 since 2002 the Big Bear Scanner is providing the latest realtime audio from Big Bear City Fire, San Benardino National Forest, CalFire, San Bernardino County Fire, CHP, Lake Patrol, and much more!
  [ Hits: 9552 | Votes: 29 | Rating: 6.82 ]

• Live online streaming for arizona - Listen to original audio content from Flagstaff, Coconino County and Northern Arizona. Streaming Police scanner by azradiowaves.net
  [ Hits: 3132 | Votes: 13 | Rating: 4.7 ]
• Chicago Fire Dept. Emergency Services - LIVE 911 audio of the Chicago Fire Department North & South channels.
  [ Hits: 1524 | Votes: 5 | Rating: 7 ]
• Illinois - Chicago Police - Illinois Cook County, police scanner includes Chicago Fire Dispatch channels (North, South, and HazMat)
  [ Hits: 777 | Votes: 0 | Rating: 0 ]

• Timewave - Sells leading-edge voice and digital communications products to the world-wide military, government, industrial, and amateur radio marketplaces. Bluetooth Remote Audio/PTT, Rig Controller with Audio & PTT , HamLinkUSB Rig Control, Noise filtersm antenna analyzers, Multimode Data Controller, TNC, Packet Radio Terminal Node Controller. USB2RS232
  [ Hits: 4103 | Votes: 3 | Rating: 5.33 ]

• Farallon Electronics - PACTOR mode radio modems and accessories, performance sailing electronics and innovative hard to find parts. Audio cables, packet cables, usb to serial converters
  [ Hits: 808 | Votes: 0 | Rating: 0 ]

• Sherwood Engineering Inc. - Cooling kits, drake filters, speach processors, audio switch boxes, synchronous AM detectors,
  [ Hits: 1162 | Votes: 4 | Rating: 5.5 ]

• Audio CW Filter - A very effective AF Adaptor, with built-in noise blanker and 30 Hz CW filter modules by PA0LQ
  [ Hits: 1521 | Votes: 3 | Rating: 5.67 ]

• Unusual HF Propagation Phenomena - This page has a collection of audio samples from unusual HF propagation phenomena, from round-the-world propagation to moonbounced signals , and to ducted transmission.
  [ Hits: 507 | Votes: 0 | Rating: 0 ]

• FT817 DSP noise reduction noise - Add-on audio DSP unit from BHI
  [ Hits: 2245 | Votes: 2 | Rating: 5.5 ]

• WD6CNF DSP Filter - Audio Digital Filter, two bandpass filters, three notch filters, two noise filters graphical setting of filter center frequency and bandwidth Drag vertical lines on top of signal, Microphone input, speaker output Mono, 5 kHz bandwidth
  [ Hits: 4902 | Votes: 2 | Rating: 10 ]

• HxPI Morse Jabberwocky - A translation of Jabberwocky into Morse Code. The famous nonsense poem Jabberwocky by Lewis Carroll, from Alice Through the Looking Glass, has been translated into many languages. Here it is in Morse Code, as MP3 audio files that can be downloaded. The files are at different speeds (words per minute, wpm) to suit those at different stages of learning morse code.
  [ Hits: 835 | Votes: 2 | Rating: 4.5 ]

• SimJT - SimJT is a simulation program. It generates audio-frequency JT65 and CW signals in a background of gaussian white noise, with user-specified signal-to-noise ratio.
  [ Hits: 2777 | Votes: 2 | Rating: 1.5 ]

• Spectrum Analyzer Real-time FFT - 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.
  [ Hits: 11315 | Votes: 9 | Rating: 7.77 ]
• Fatpigdog's Real Time FFT Audio Spectrum Analyzer - Fatpigdog's Real Time FFT Audio Spectrum Analyzer. User interface has the look and Feel of an HP Spectrum Analyzer. But, in addition to the regular Spectrum Plot, it also produces detailed Waterfall plots. The user can optimize the color map, chosing from a wide assortment of color themes. This analyzer supports multiple traces, trace arithmetic and normalization.
  [ Hits: 4122 | Votes: 5 | Rating: 8.2 ]

• Voice descrambler - This program descrambles band inverted encrypted transmissions, usually found on VHF/UHF. It uses a NCO (numerical controlled oscillator) to re-produce the originally inverted audio band. Use it only if legally permitted in your country. I assume no responsabilities deriving from its use. Standard disclaimer applies
  [ Hits: 13574 | Votes: 38 | Rating: 6.16 ]

• Using ferrite for interference suppression - Excellent guide to using ferrite cores for interference suppression. Understanding and Solving RF Interference and Noise Problems by Jim Brown K9YC Audio Systems Group, Inc. PDF File
  [ Hits: 6160 | Votes: 6 | Rating: 9.5 ]

• Bluetooth Audio and Amateur Radio - Bluetooth headsets are very common with cell phone users. As such, many amateurs may already own a Bluetooth (BT) headset. So why not use it with amateur radio?
  [ Hits: 4244 | Votes: 10 | Rating: 6.6 ]

• The RF Noise Identification Website - Audio files to help identify rf noise (rfi). Identify the RFI that interferes with your reception. RFI Noise identification.
  [ Hits: 1197 | Votes: 6 | Rating: 6 ]

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