audio filter

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.

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

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)

I0JXX - The I0JXX is an italian company that offers market their projects, also sells electronic products of high quality, both for Ham, both Broadcast and their accessories. VHF Antennas, mosfet power amplifiers, filters, insulators, power dividers, telescopic poles, antenna masts

PAR Electronics Inc. - Filters for the commercial 2 way market, MATV, FM broadcast, laboratory, marine industry, amateur radio, scanner and short wave. Antenna for amateur radio bands

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.

NorComm Data Signaling - Sequential Decoders, DTMF, voice encryption, notch filters and band pass filters, single tone burst decoders.

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

IC7000BKT Icom IC-7000 CAT Control - CAT Control specific for Icom IC-7000 allows managing filters and all the commands of the RTX. Includes a function to synchronize and manage all the memories of the IC-7000.

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 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.

ADIF Master - ADIF Master is a highly user configurable Windows application for working with HAM radio logbooks. ADIF Master allows to convert any existing Cabrillo, TR, CT logs or a part of it into an ADIF file. Also you can use ADIF Master to open and modify existing ADIF logs using customizable filters, add, remove and modify ADIF tags and entries

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.

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

Resonant Frequency Calculator - This web based application will compute circuit values required for an L-C circuit to resonate at given frequency. Also it will compute the resonant frequency if given values for L and C.

Coaxial Stub Filters - A range of easy-to-build RFI filters by John Regnault, G4SWX

Low-Pass Active Filter Designer - Javascript filter design page with introduction to low pass filters by k7mem

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