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RadioReference.com Forums
I am amazed how much a android smartphone can do. I purchased 3 apps on Google Play from Wolphi. DroidPSK DroidRtty and Morse decoder. Morse decoder is hit n miss and lags when agc kicks in. DroidRTTY and DroidPSK work rather well. All uses audio coupling. Worth the money.
I posted this info for those who want to do more with shortwave and their android. DroidPSK does 31 and 63. DroidRTTY does RTTY45, German DWD RTTY, but no ability for RTTY850 (encrypted anyway)
All my decoding sessions have been pleasant. The times text is unintelligible is during QSB, or signal fading. MFSK16 seems to decode under QRP conditions. There is no app on Google Play that can decode MFSK for android. I could recommend AndFlmsg (android port of FLDIGI), but it hogs battery more than my comfort zone.
I also recommend not using PC near a portable shortwave radio. Unplug a laptop especially. Android smartphones are very quiet. That helps with getting good decodes along with a good antenna.