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QSL statistics  ^updated - Online database of QSL card exchange status. Lookup if stations confirm QSOs and share your stats by uploading your ADIF log.

SP-QSL Gallery Online - The SP-QSL-Gallery is a Polish amateur radio QSL collection It currently contains about 6500 cards, split into 14 unique areas for easy browsing.

Les Nouvelles DX - Galerie de QSL - QSL gallery mostly for the deleted countries, old prefix, Antarctic stations and also for the very old cards prior 1945

QSL From DX Peditions - QSL Cards collection from several DX Peditions by KK3Q

PSK31 Fundamentals and Setup - Background: The PSK31 philosophy, The QPSK mode, Varicode, Sound Card DSP Setup and Operating Tips

Making the Most of your PSK31 Signal - Adjusting audio output of your soundcard to obtain a perfect PSK signal from your transmission. A project to help you tuning your PSK31 emission.

PSK31 Elmer page and PSK Signal Quality - Generating clean PSK signals and helping others to correctly tune their souncard output, as well as giving proper RSQ reports by identifying signal quality by N1NKM.

Packet with Soundcard - Sound card packet by NM5RM. This amateur radio web site explains how to use the AGWPE utility program to send and receive packet using the sound card or sound chip of your PC instead of a traditional TNC or radio modem

Icom ACC1 interface - Need to interface both a TNC and the computer soundcard? This is a ICOM 756PRO ACC1 audio/keying/FSK interface by WA0SXV

Getting Started with FT-817 in Digital Modes - Getting Started with Digital Sound Card Modes with the Yaesu FT-817 Transceiver by Clint Hurd KK7UQ

QSL Protect - QSL Card Organizer, protection sleeves fit into binder to organize and display your QSL cards. QSL Card Holders.

LZ3HI QSL printing - Printing QSL cards, postcards, advertising materials, bussines cards, calendars, stickers, t-shirts, gold printed advertisements, rubberstamps, and QSL lables from Bulgaria

QSL Shop by SQ1K - QSL Card printer in Poland

International SWL Registry - Obtain a unique SWL Designator to use on your signal reports and QSL cards. Official certificates also issued.

Aldo - Morse tutor - A morse tutor that drives any Linux supported soundcard.

OscarDelta IP Over AX.25 - This is a packet radio software developed for amateur radio operators to provide IP communications. You can chat, send/receive e-mail, surf the web and so on via radio depending on your bandwidth. You don't need a TNC. You might have all of TNC features via SoundCard using SoundModem.

Multi-Instrument - Contains a PC sound card based signal generator. It can generate functions, multitones, arbitrary waveforms, burst tones, MLS, DTMF, musical scales, white noise and pink noise, and frequency/amplitude sweep. Fully functional free trial downloadable.

VIT Voice Keyer - The VIT Voice Keyer is a simple soundcard based voice keyer. It plays various recordings and output them to your radio and key the PTT line.

ICOM SoundBlaster Interface - Interfacing ICOM radios with PC soundcard by W8WWV

Big Dummy's Data Interface - Simple soundcard data interface for the various data modes

Sound Card to Radio Interfacing - Sound card Hamming, PSK31 and other digital modes, CQ amateur radio article by K5ABT

VK2QW Sound Card Interfacing - Computer to transceiver sound card interfacing by VK2QW

The In's and Out's of a Sound Card - October 2003 QST article on working digital mondes with sound card interfaces

A Switchbox for Soundcard Digital Modes - A homebrewed switchbox prooject Don Wilhelm W3FPR

Multimeter with Sound Blaster - Sound card based multimeter