DigiDecoder: Ham Radio

DigiDecoder is a universal ham radio digital modes decoder and encoder. Use the built-in microphone or connect an audio cable directly for better input quality.

One app for all the signals! The correct digital mode is automatically recognized and decoded in real time with an animated waterfall display.

Quickly encode and send beautiful SSTV images, plus CW, FT8, and Packet messages. Bluetooth and network TNCs for Packet are supported as well.

Try DigiDecoder free for 7 days. After the trial, continue with an affordable monthly subscription, or unlock lifetime access with a one-time purchase (a few months' worth). Nothing is charged during the trial and you can cancel anytime.

Currently supported decode modes (more to come):

SSTV:
Robot 8 BW - 160×120
Robot 12 BW - 160×120
Robot 24 Color - 160×120 YCrCb
Robot 24 BW - 320×240
Robot 36 - 320×240 YCrCb
Robot 72 - 320×240 YCrCb
Scottie S1 - 320×256 RGB
Scottie S2 - 320×256 RGB
Scottie DX - 320×256 RGB
Martin M1 - 320×256 RGB
Martin M2 - 320×256 RGB
PD50 - 320×256 YCrCb
PD90 - 320×256 YCrCb
PD120 - 640×496 YCrCb
PD180 - 640×496 YCrCb
PD240 - 640×496 YCrCb
PD160 - 512×400 YCrCb
PD290 - 800×616 YCrCb

Packet:
AX.25 1200 - AFSK Bell 202, 1200/2200 Hz
FX.25 1200 - AX.25 + Reed-Solomon FEC
AX.25 300 - AFSK 1600/1800 Hz
FX.25 300 - AX.25 300 + Reed-Solomon FEC
IL2P 1200 AFSK - Bell 202 + RS FEC
IL2P 300 AFSK - 1600/1800 Hz + RS FEC
IL2P 300 BPSK - 1500 Hz DBPSK + RS FEC

Weak Signal:
FT8 - 8-tone GFSK, 15s periods
FT4 - 4-tone GFSK, 7.5s periods
JS8 - Keyboard-to-keyboard, FT8-based modulation

Narrowband:
RTTY - 45.45/50/75 Bd
CW/Morse - 5-55 WPM
Olivia - 8/250, 8/500, 16/500, 16/1000, 32/1000

Currently supported encode modes (more to come):

SSTV:
Robot 12 BW - 160×120
Robot 36 - 320×240 YCrCb
Scottie S1 - 320×256 RGB
Scottie S2 - 320×256 RGB
Martin M1 - 320×256 RGB
Martin M2 - 320×256 RGB
PD120 - 640×496 YCrCb

Packet:
AX.25 1200 - AFSK Bell 202, 1200/2200 Hz
FX.25 1200 - AX.25 + Reed-Solomon FEC
AX.25 300 - AFSK 1600/1800 Hz
FX.25 300 - AX.25 300 + Reed-Solomon FEC

Narrowband:
RTTY - 45.45/50/75 Bd
CW/Morse - 5-55 WPM

Weak Signal:
FT8 - 8-tone GFSK, 15s periods
FT4 - 4-tone GFSK, 7.5s periods
JS8 - Keyboard-to-keyboard, FT8-based modulation

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/