modulation sound files

Inexpensive GPS mobile Antenna - An inexpensive external GPS antenna, for 1.5 GHz band for GPS receiver, If you operate APRS or just need an external antenna for your GPS receiver, here’s one that is easy to build yet offers surprisingly good performance in a compact size. Best of all, it uses commonly available components and materials.

Low Land DX-pedition Team - Contains stories, pictures, audio files of all previous expeditions and current ones.

DXCC txt file - The current ARRL DXCC country list by Bill Brelsford, K2DI

EI4IX Dave - Dedicated to 50MHz and 144MHz. Online 2m and 6m logs. Real Audio sound clips of Tropo, Aurora, Sporadic E, Meteor Scatter, TEP and F2 Propagation.

Radio Sounds  ^pop - Several files with sounds you can ear on the air, includes PSK31, MT63, QPSK, RTTY and Hell variants

VK2FLR DX Sounds Archive - Real Audio files containing interesting examples of VHF DX propagation from Sydney, Australia

VK2QF 6m sound archive - Real audio sounds clips

IK4WMH Sounds Page - Few recordings of difficult qso's

VK6RO's DX Sounds Page - Clips of DX audio, some dating back to the late 70's to early 80's and up to March 2001

HSCW ping sounds - You've heard MS pings, of course. But what does a HSCW ping sound like?

I5XWW Crispino Kits - Ham Radio Kits, soundcard interface for digimodes, usb CAT Interfaces, PA interface cables, connectors, DRM hardware and software, DRM converters

Engineered Composites Ltd - Fibreglass tubes, structural profiles and other composite materials all available from stock

APRS Documentation - This documentation and other files listed here are done by Bob Bruninga, WB4APR. Some of this documentation is applicable to MacAPRS and WinAPRS as well as dosAPRS.

Amateur SETI - Links, files and programs supporting the development of amateur SETI and radio astronomy as hobbies.

Ham Radio & DSP - Related histories, facts and opinions by EA2BAJ, includes example of PSK MT63 QPSK audio files in wav file

Yaesu FT-817 discussion group - Members discuss the operation of and modifications to this outstanding QRP rig that covers 160m 70cm with all modes. Site contains a large database of FT-817 FAQs and data files. Antennas, tuners, and power sources are also covered as related to this ultra-compact transceiver.

AirNav Selcal Decoder - AirNav Selcal Decoder enables you to decode in realtime Aviation HF Selcal transmissions. It only needs an HF airband receiver and your Sound Card. No special hardware needed. With AirNav Selcal Decoder you do not need any other hardware decoding system. Just your PC and the Sound Card.

RecAll - AudioCapture recorder software for Windows, Runs in the background, and starts recording when sound is detected from the microphone input.

Feldnew8 - DOS Hellschreiber radio program by G3PPT

XASTIR - Xastir is program for receiving and plotting APRS™ position packets. Development is a collaborative effort of programmers and amateur radio enthusiasts from around the world. Xastir supports many map formats and is highly customizable. Xastir runs on Windows/MacOSX/Linux/FreeBSD/Solaris/Lindows. It supports 125 map formats, several types of TNC's and weather stations, Festival speech synthesizer, AX.25 networking (Soundmodem/Baycom/SCC!) and seven languages!.

WLOG2000 LogBook for OM SWL BCL CB - Database logbook for OM SWL BCL & CB with utility like DXCLuster DXtelnet PSK PSK-Pbbs (TNC or PC sound card) radio rotor CDbook interface and many other features. Free Update at homepage.

IZ8BLY Stream - Stream is a software that implements MFSK16 and MFSK8 modes designed by me and Murray Greenman ZL1BPU. It also offers a series of experimental modes based on FEC, interleaving and several modulation techniques (PSK, QPSK, MSK).

MMSSTV - MM Hamsoft  ^{updated  pop} - SSTV freeware software for Windows by Mako JE3HHT. An excellent SSTV program that requires only a computer with soundcard, no expensive TNC required. Works on all Windows version including Windows XP, Vista and Windows 7

RDFT - HDSSTV - High definition SSTV software, Redundant Digital File Transfer

PTT and Sound Card Interface - PTT and soundcard interface schematic by ON6MU