audio filter

Mauritron Technical Services - Service Manuals & Schematics, supplied for most types of equipment, Audio, TV, Video, Test and Ham Radio

XE1XZQ Diego - Weekly bolletins of XE1RCS in RealAudio

XE1YJS Joaquin - Ham radio, Mir contact samples in Real audio, packet and some links

EA3QP Eugeni - Ham Radio Web - Devoted to: Contest, QSL info and SSB Audio.

Waterlook police live audio - Waterloo regional police live audio feed

K-Com - comprehensive line of products for rejection of Radio Frequency Interference (RFI) to telephone equipment.

Array Solutions - WX0B - Stacking and phasing HF and 6m arrays antenna switches and contesting devices. Custom low band antenna arrays, bandpass filters,commercial/Mil STd filters,microwave components, commercial broadcast filters.

HD Communications - Rf Connectors,RF Amplifiers,RF Filters,HF cable and accesories. Tower hardware valves and tubes

Kiwa - Filters and performance upgrades for many receivers

W2IHY Audio Products - Band audio equalizer and noise gate compatiable with ICOM, KENWOOD, YAESU and other radios

Getting started on EME - How to get started on EME, with audio clips and lots of useful information for beginners by N1BUG

MoonBounce operations - EME operation news, typical moonbounce audio recordings

Shuttle Audio Frequencies - The frequencies listed here may carry shuttle audio during space shuttle missions

Setting audio on Yaesu FT-2000 - Yaesu FT-2000 Audio Settings - How to make the FT-2000 sound clear and clean by LA5MDA

Yaesu VX-8R Audio Level - The RadioReference.com Forum topic about VX-8R and audio setting

Voice Shaper - Voice Shaper is a freeware windows speech pre-processor for SSB transceivers. It receives the voice signal from the microphone connected to the soundcard, and sends the processed audio back to the soundcard in real time by Alex Shovkoplyas, VE3NEA

Spectran - 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

Picture Packet - A Windows95/98/NT control program for Terminal Node Controllers. In its Lite mode it's all the software many packet users may ever need, and it's free. Receive and display of full color, high-resolution images and audio files

Spectrogram  ^pop - Shareware dual channel audio spectrum analyzer for Windows 2000/XP which can provide either a scrolling time-frequency display or a spectrum analyzer scope display in real time for any sound source connected to your sound card. Can be used for MTHELL, QRSS and DFCW by R S Horne

FFTDSP  ^pop - FFTDSP is a PC program which can detect weak radio signals in real time. Uses the PC's soundcard and advanced signal processing techniques, extracts and displays weak signals from the receiver audio.

Tunekit - Filter Tuning Kit for Windows is a electronic filter synthesis program and a practical filter tuning aid for actually designing and building a working filter

TVI and BCI Filters - TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.

Lowpass filter for 5MHz - The following lowpass filter was built using the tables in the arrl manual, it is a 5 section one and seems to work ok

KI5YN QLF Filter - The QLF filter is a microprocessor based interface designed to go between a standard Morse code key and a radio transmitter

High-speed packet 23cm - 23 cm wide-band transceiver for high-speed data or audio by PE1JPD