Our friend John NZ9Z emailed remarking how neat the BARTG resource listed the ARRL Contest Rate Sheet was (BTW Highly recomend you subscibe to the Contest Rate Sheet – it always has something for everyone).
Often new hams and amateurs first starting in Digital Modes ask what does a mode sound like and here is the BARTG Link John NZ9Z mentioned and several others:
The British Amateur Radio Teledata Group (BARTG) wibsite on what the different digital modes sound like:
http://www.bartg.org.uk/Sound%20Files/soundlibrary.htm http://www.bartg.org.uk/modesamples.asp (Updated URL 08 OCT 09) (MP3 or WAV Samples of: ALE, ASCII, CHIP, DominoEX, FELD HELL, FSK-W, JT65A, MFSK16, Olivia, Pactor, PAX, PAX2, PSK125, PSK31, Throb, SSTV, AMTOR-FEC, AMTOR-ARQ, DRM, MT63, sitora, sitorb, packet 300 baud, packet 1200 baud, and RTTY (170 shift 45.45 baud))
An overview of the range of amateur digital modes together with audio samples by WB8NUT
(WAV Samples of: Amtor, Pactor, G-TOR, PactorII, Clover, RTTY, PSK31, Packet, Hellschreiber, MT63, Throb, and MFSK16)
KB9UKD’s exceptional collections of large number of audio samples of different digital modes, including many non-amateur modes (Nextel, TETRA, Pagers… dozens & dozens):
Sean G4UCJ’s webpage of data modes and WAV audio samples:
http://myweb.tiscali.co.uk/g4ucj/html/digital_modes.html http://www.hfradio.org.uk/html/digital_modes.html (Updated URL 08 OCT 09)
The Amateur Radio link compendiums list more sites or of course you let google be your friend to find for more sites with samples.