improving dsp audio

Beverage Transformer Calculator - W0FMS Two-Wire Beverage (SWA) Transformer Calculator

Sparkmuseum - Vintage radio and scientific apparatus by john jenkins, include antique radios, Horn Loudspeakers, Vacuum Tubes, A.C. Receivers

GB3DC Repeater live - Listen to the live audio stream from the GB3DC repeater

Council Bluffs area Police Scanner - Council Bluffs area Sheriff, Police, Fire, and State Police IOWA

Indiana State Police Live Scanner - Live steaming audio of Allen County Police & Fire dispatch and Indiana State Police dispatch.

Illinois - Chicago Police - Illinois Cook County, police scanner includes Chicago Fire Dispatch channels (North, South, and HazMat)

Detroit Fire Department Scanner feed - Detroit Fire Department Radio Feed

Waterloo Police Scanner - Live police scanner Region of Waterloo

xggcomms.com Interfaces - Xggcomms specialise in producing cost effective, high quality CAT and Audio interfaces for Icom and Yaesu Amateur Radio Equipment

Tubes.ru - specialize in trading Russian vacuum tubes used in broadcasting, amateur radio, Hi-Fi audio, meteorology, communication, medical applications and industr

Audio levels for digital modes - Setting audio levels for digital modes on FM

Drake TR-7 Improvements - Installing the Cumbria Designs X-Lock VFO Stabilizer, and Improving The TR7 Audio Quality

Elecraft K2 Improving CW Filter - Here is a cheap and simple way to significantly improve the K2 CW filter(s). With this mod, even strong signals will fade to black as they tune out of the filter pass band

Fixed Audio Output for the K2 - W3FPR fixed level AF output fot the Elecraft K2

Yaesu FT2000 ESSB Audio Setup - Audio setting and improvements for Yaesu FT-2000 by k6jrf

Building a DSP unit for Yaesu FT-817 - Installing a DSP Unit into the FT-817

DSP Radio - DSP Radio Software Defined Radio for Mac OS X by DL2SDR

Integrated Circuit Audio Amplifiers - Circuit designs for IC audio amplifiers by N1HFX

Design Guidelines for JFET Audio Preamplifier Circuits - Design Guidelines for JFET Audio Preamplifier Circuits By Mike Martell N1HFX

Microphone sensivity calculators - Mic online calculator , Microphone Dynamic Range Calculator, Microphone Sensitivity Calculator

Filtering of the Icom IC-775 DSP - Replacing filters on ICOM IC 775

Speaker Building - DIY speakers, resources for custom speaker hombrewing

QRP NESCAF Kit - The New England QRP NESCAF Kit Switched Capacitor Audio Filter by N5ESE

Switched Capacitive Audio Filter - NEScaf: A Switched Capacitive Audio Filter

30 m Band Direct Conversion Receiver - The direct conversion receiver described consists of only a bandpass filter, mixer IC, VFO and audio filter. With only 22 parts, this simple circuit should take a few hours at the weekend to construct.