software audio filter

Workman Electronics - Amateur radio accessories, power supplies, tvi filters, speakers, microphones, swr meters, preamplifiers, switches, cable and connectors,

Dunestar Systems - Manufacturer of single band and multiband transceiver bandpass filters for HF. High pass filters, two radoi headphones mix and switch, 6 meter portable antenna, antenna remote switching and steering.

Lazy Dog Engineering LLC - Manufacturer of software-defined radios and portable antennas

Getting Started with Sound Card Digital Modes - Setting your Amateur radio station up to operate the wide range of modern radio software which uses the PC sound card to generate and receive signals. Murray Greenman ZL1BPU

ON4VT sstv pages - ON4VT SSTV and personal page, includes a large software review, introduction for beginners and webcams showing sstv on the net

SPRE Home Page - The Spartan Packet Radio Experiment (SPRE) is an Amateur Radio (Ham radio) communications experiment. The primary mission was to test satellite tracking using amateur packet radio and Global Positioning System (GPS). SPRE was developed and built by the University of Maryland Amateur Radio Association (UMARA) with assistance from NASA, volunteer engineers, and volunteer software professionals.

Novel filter for sat working - Elimiate QRM when working with satellite antennas

Weather Fax and Weather Satellites  ^pop - Weather Fax for Windows hardware and Software.

Scanning Reference - Informations about Scannings, with frequencies, information about scanning, hardware and software reviews

Antique Electronic Supply - Antique Electronic Supply has a complete line of vacuum tubes. We feature Svetlana vacuum tubes for amateur radio, broadcaasting and audio applications. We have over 700,000 new old stock tubes to choose from. We also have a complete line of transformers, featuring Hammond and One Electron. Capacitors, resistors, parts, books, etc. Most orders shipped within 24 hours. Major credit cards accpeted. E-mail for free catalog!

MEI Software - The file MEI-10.ZIP contains educational software to evaluate antenna arrays of up to 8 elements. Two types of arrays may be studied: 2D planar arrays (Yagi-Uda, Circular, etc., up to 6 elements) and colinear arrays (up to 8 elements.)

EZNEC Antenna analysis  ^pop - NEC-2 based antenna analysis software for the amateur and professional

Antenna Software at QRZ.com  ^pop - Large collection of radio related software at QRZ.com web site.

QRZ Cdrom Shareware - Shareware and Freeware HAM radio software by QRZ.COM

Software by Swiss ATV - Small collection by Swiss ATV association

DIGTRX - High definition SSTV software for windows 2000, xp by PY4ZBZ

DXbase - Professional Logging Software for Windows 95/98/NT. A separate version is available for DOS. Full featured logging, HF radio control, Internet Packet, VHF Packet, Label Designer, Report Designer, and a lot more.

MacProp - Propagation forecasting software for the Macintosh

MacIcomControl - Radio control software for the Macintosh

Mac GrayLiner - Displays map of the world, showing day and night areas.

Promethius - Logbook software for the Macintosh by Chris Smolinski

MultiMode - Digital modes decoding software for the macintosh. Decodes CW, RTTY, WEFAX, SATFAX, ACARS, DTMF, SSTV

FBB Packet-radio BBS - FBB is a freeware bulletin board software for amateur packet-radio run on DOS Windows and Linux

Proagation Prediction Program (DOS) - Downloadable DOS program for propagation prediction for the serious contester.

SSTV FAX WX Software  ^pop - A very clomplete ham radio software collection for SSTV, FAX, and WX