digital audio

UHF 11 elements beam antenna - An eleven elements yagi antenna for 430-450 Mhz by PU1LHP In portuguese

Pacific T.V. Online Tube Catalog - Vacuum tubes and sockets for radio, audio and amateur use. Over 1500 types, online schematics and technical data

VHQ07 UHF CB Repeater  ^updated - Listen to live audio by VHQ07 Channel 7 UHF CB Repeater located in Brisbane Queensland Australia.

K5ZD contest audio live - During some of the serious contest operations from K5ZD, we will enable live audio streaming direct from the headphones

TARA's all Seasons Contests - Digital modes contest rules by TARA. Offers the All Seasons contest Tournament. A new concept in contesting.

The CQ DX Field Award - The CQ DX Field Award is issued in four categories—Mixed, CW, SSB, and Digital—for confirmed two-way contacts with 50 or more Grid Fields

South Florida FM Association - SFFMA 147.000 Repeater audio By KG4LXH

condiglist : Lista Conexion Digital - A mailing list in spanish to exchange shortwave dx i nformations

Scan Merrimack Valley - This site contains the Scan Merrimack Valley Fire Feed which has live audio from Area Fire Departments in the Merrimack River Valley, Massachusetts.

Boston Police Radio Scanner - Broadcastify listen live audio feed from Boston Radio Police Fire and EMS

Screwdriver Antennas - Quality full legal limit screwdriver antenna with the mount and digital controller at an affordable price by NA0LB

MDS-HAM Amateur Radio Products - MDS-HAM Amateur Radio Products help make operating easier with the Introduction of the RC-1-Y, and RC-1-M rotor control box. A digital rotor control box with a serial computer interface at an affordable price which is made in America.

Frequencies for using digital modes - These frequencies are to be used as a guide to find the related signals. They have come from several sources, and are, in no way, guaranteed to be complete, accurate, or inclusive.

Sights and Sounds of Digital Signals - Preview the waterfall signature of various digital signals and listen to the sound of the digital modes. Learn about the bandwidth requirements and why a linear transmitter path is critical to successful and correct use of many modes on the amateur bands by W1HKJ

The Coherent CW Archives - Unofficial archive of the works from the early pioneers of Amateur Radio's digital communications era

Digital Modes used in Ham Radio - Article with waterfall pictures and samples of several digital modes like psk31, sstv packet pactor hellschreiber domino thor jt65 and more

Vacuum Tubes, Inc. - Worldwide sellers of vacuum tubes and electron tubes for audio, radio, and industry

ZLP Electronics - Yaesu Icom Kenwood CAT Interfaces. Isolated audio-DATA interfaces for ALL afsk DATA modes inc psk31 rtty sstv etc.

Morse Code Master - Highly innovative, audio-visual morse code training software for 'slow' and Farnsworth methods from Stratosoft.

Contact-Multi - Contact-Multi is a Freeware Multi Digital program for Windows (PSK, RTTY,FSK and MFSK). It provides a DXCluster, Diplomes,LogBook,Qsl's Print, statistics Shareware version available. English and Spanish version

KE7ATE - VR-5000 Signal Capture and Analysis Software - Give your VR-5000 a new face. Controls your VR-5000, Log stations, Manage frequency lists, Record Audio and more. This program utilizes a more visual approach to simplify your radio listening.

JQAM (QAM modem) - Transmit audio/video, UDP packets, http, rs232, with QAM using the soundcard rates up to 100kb/s.

FT-726 AUDIO Modifications - Throughput improvement for the FT726R - Tapr PSK modem

Precision E-200-C Signal Generator - This page lists some vintage test equipment including RF Signal generators, tube tester, cap tester, audio generator

Signal Generator VFO - Signal Generator (VFO) with Direct Digital Synthesis by Bruce AA0ED and Craig AA0ZZ