digital audio

Vintage Electronics - Antique radios and audio sold to collectors and dealers

Vintage Radio & Audio pages - A resource for Collectors and Restorers of Vintage Electronic Equipment.

Johan's old radios - collection of vintage audio equipment

M.V.S.Z AO Svetlana - Audio hi-end tubes for amplifier

Trusted QSL - The mission of the Trusted QSL Group is to keep eQSL an open and free activity for amateur radio operators by promoting the Digital Signature Standard (DSS).

TwinsLAN Amateur Packet Radio Club - TwinsLAN is Minnesota's only amateur radio club devoted to digital communications

18SD001 live streaming - Live streaming audio from 18SD001 locator KM18VA Athens Greece usually online during week-ends

Houston area firefighters live feed - Houston FD live dispatch audio and discussion group

Las Vegas Live Scanner  ^pop - Las Vegas, Nevada Police and Fire Live Scanner

Minnesota - Willmar Police & Fire-EMS Scanner Feed - WILLMAR MN KANDIYOHI CO. Police fire EMS highway dept.

New York Live Police Radio  ^{updated  pop} - Listen to NYC Live Police Radio

Douglas: Live Douglas County Sheriff - Douglas County Sheriff dispatch channel

3840 Audio Archives Priority listing - 80/75 meter Amateur Radio recordings via various online tuners.

K5MQ Ham Radio Audio Recordings - Recordings of DX stations from around the world SSB and CW.

RFSM-2400 Digital Mode - A recent digital radio protocol. Based on a freeware soundcard-based Radio Frequency Software Modem. Work under standart MIL-STD-188-110A. Maximum speed 2400 bit/second. Signal bandwidth: 0,3-3,3 kHz (standard mode) and 0,3-2,7 kHz (non-standard mode).

Russia ATV Amateur TV - Digital Amateur Television web sited include a D-ATV transmitter, D-ATV receiver, D-ATV modulator D-ATV schematics by RA3TTS

Getting started on RTTY - A complete guide from the station setup, rtty software customization, tips on tuning rtty signals and setting the proper audio level and filters by Andrew G8GNI M5AEX

IC7000BKT Icom IC-7000 CAT Control - CAT Control for Icom IC-7000 for windows. Management and synchronization of all memory bank, Management filters, volume, tones, DUP, DTCS, import export, audio recording and log frequency and signal,Auto CQ audio for repetitive calls

AutoRec - AutoRec is windows freeware time based automatic recorder - player for radio broadcast. Auto Recorder will record or play wav audio files, and execute batch or other executable application programs at scheduled times. The primary use for Auto Recorder is automatic, unattended recording and playback of network or other satellite-delivered radio station program material.

DSCdecoder - DSCdecoder decodes the DSC digital signals from ships and coast stations using the sound card in your PC. You need a suitable MF, HF or VHF band radio receiver tuned to one of the DSC distress and calling channels or to one of the Navtex channels

Trusted QSL - Open source libraries and utilities to support using digital signatures for Amateur radio QSL system information like eqsl and lotw. Available for windows macos e linux.

Yaesu FT-1000D HiFi SSB Audio and Mods - Using Hi-Fi Audio with FT-1000. Includes many FT-1000D modifications too by K6JRF

HI-FI Audio with Kenwood TS-850SAT - Setup guide for DSP-100 and TS-850

Using ferrite for interference suppression - Excellent guide to using ferrite cores for interference suppression. Understanding and Solving RF Interference and Noise Problems by Jim Brown K9YC Audio Systems Group, Inc. PDF File

Vacuum Tube Software - The VTDATA software package is a complete vacuum tube manual on your computer. It has all the information you'd expect in a tube manual. VTDATA's database also includes vacuum tubes of historical interest, such as the early "two digit" types (45, 80, etc.) and hi-fi audio types.