audio signal generator

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.

DIY Wireless Antennas Update and Resource Center Priority listing - Your DIY Guide to Wireless Antennas for boosting wireless signal strength. How to build a wireless antenna for little or no money.

Beacon List Generator - Ham Radio Beacon list generator from SK6YH database

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.

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

Numbers Stations - About numbers stations, and their criptic transmissions, where to listen to them and some audio recording samples by fascinating shortwaves

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)

Response Microwave, Inc. - Microwave Signal Processing Components and Subsystems, from design to manufacturing.

Ningbo Zhongce Dftek Electronics - SWR meters, Power supplies, millivoltmeters, Oscilloscopes, signal generators, function generators China.

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.

The JT65 Communications Protocol - Digital protocol intended for Amateur Radio communication with extremely weak signals. Joe Taylor, K1JT

WSPRnet Weak Signal Propagation Reporter Network - A group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power transmissions. Computer sent/received Morse signals received by amateurs and collected on an online database.

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

MM0XDG Yaesu FT-2000 settings - These are the key menu settings for RX and TX Audio that I used to use on the Yaesu FT-2000. I have published them here as a web-based recod for me, but also for the benefit of other licensed amateurs who may be looking for a starting point.

Yaesu VR-5000 Review - Strong Signals review of the yaesu VR 5000 general coverage radio receiver

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

DSPRX - Signalprocessing for SSB - Direct Conversion Receiver using Phasemethod for Sideband Supression, does all necessary signalprocessing for Direct conversion Receivers using IQ-mixer for demodulation.

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.

Double Tone IQ-Generator - Easy to use double tone IQ-generator for testing direct conversion SSB-transmitters based on phasemethod etc.

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.

Receivers sorted by IM3 - Sorted by Intermodulation. Best receiver first. This is a measure of how badly a close-spaced signal will trash your receiving with spurious signals or splatter sounds,

Rookey Kit - Encode/decode On-Off audio pulses for remote control of projects

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

80m Passive Heterodyne Receiver - Using a full-size antenna and a reasonably sensitive headphone, this simple switching mixer will produce an amazing abundance of signals on 80m.