audio fft analysis

Top-Loaded Wire for 80 and 160 Meters - Operating on 160 meters from a city lot is always a challenge. Here's how K9YC does it.

43 Foot Multiband Vertical Installation and Performance - Installation notes, and decision analysis for selecting and erecting a multi band vertical antenna with radials.

Beacons audio files - Here you can find beacons audio files list recorded by IW3FZQ and IK3NWX

Beacons sounds - Beacons recorded audio files by kl7fdq

San Joaquin County Sheriff and Stockton Police - Recorded scanner radio traffic from police and fire department communications. Stockton Police scanner recordings of pursuits, fights, shootings, officer involved shootings, in progress high intensity calls.

Marine VHF Radio Live Streaming Audio  ^updated - Live streaming audio of VHF marine radio channels 05A, 16, and 22A from Manasquan, NJ.

WIA National News - 30 Minutes of Ham Radio news produced each Saturday and broadcast across the globe by VK1WIA.

Sounds of the Commercial and Military Digital Station - Information and digital audio samples of various modem modulation types

Hamvention Dayton live video - W5KUB Broadcasting live video and audio from ARRL National Convention (Dayton Hamvention)

US Interface - One USB cable to your computer does it all include high speed sound card and audio monitor, works with most of remote control software.

Satellite Frequency List - List of satellite frequencies from HT to VHF and UHF

Digital Modes Samples - Audio files of many digital modes. Many were recorded in the HF bands an most others are found on VHF/UHF frequencies.

IC-756 Modifications - Spectrum Scope Adjustments, ACC1 Audio Output Increase, General Coverage TX Mod

Yaesu VX-7R hints and tips - Yaesu VX-7 Microphone Audio, Yaesu VX-7 Speaker Repair and the MH-209SMA antenna

Winnipeg Police Fire Paramedic Scanner - Live Streaming Audio of Police, Fire, and Paramedic Services in Winnipeg, Manitoba, Canada.

Ontario Police LIVE Streaming Audio - Live streaming audio of Ontario Police Department. Super clean receive and high quality audio supporting up to 300 listeners.

Train's Towers - Maintenance of Antenna Tower Systems, Antenna tower foundation analysis and repair, Tower troubleshooting and repairing

Signals Analyzer - Signals Analyzer – it is the program, which is designed for the very qualitative analysis of different signals. The main area of SA application is the analysis of unknown or unclear, strange signals.

PCR Remote Control - PCR Remote Control enables you to control your Icom PCR-100, PCR-1000, PCR-1500 or PCR-2500 over the internet. Using SHOUTcast or a similar Audio Server, you "Broadcast" your radio over the internet allowing others to hear whats going on in your local community.

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.

Signals Analyzer - Signals Analyzer – it is the program, which is designed for the very qualitative analysis of different signals. The one of main fields of SA application is the analysis of unknown or unclear, strange signals. This programm will be very usefull to everyone from professional analysts to amateurs.

Transistor Audio Preamplifier Circuits - Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits By Mike Martell N1HFX

Low Pass Audio Filter - 440 Hertz peaked low pass audio filter experiments

The RF Noise Identification Website - VE3HLS Audio files to help identify rf noise (rfi). Identify the RFI that interferes with your reception

Calculating the Received RF Noise Power - Voacap, high-frequency ionospheric communications analysis and prediction