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Want to display or send SSTV transmissions? MultiMode Cocoa lets you decode and display Ham (Amateur) Radio SSTV (Slow Scan TV) transmissions. Just connect your computer to an HF radio, tune in an SSTV frequency, and watch the pictures. MultiMode Cocoa decodes all of the popular SSTV modes, including Robot, Scottie, Martin, and more. Some modes are receive only.

Decoding of SSTV transmissions begins automatically as soon as the start of image audio signals are detected, and the image format is automatically selected. Manual control is also available for use when receiving conditions are poor. Timing signals (phase and skew) can be adjusted to compensate for mismatches with the sending station.

Received images can be saved - including automatically as they are received. You can leave the app running unattended, and come back to view all the received images.

You can also transmit images of course, taken from your saved photos or taken with your computer's camera. Text, such as your callsign, can be added to the sent image.

Modes supported for reception (not all modes can be transmitted):

B&W 8 sec
B&W 12 sec
B&W 24 sec
B&W 36 sec 
Martin M1
Martin M1
Martin M2
Martin M3
Martin M4
MP73 
MP115 
MP140 
MP175
MR73 
MR90
MR115 
MR140 
MR175 
PD 50
PD 90 
PD 120 
PD 160
PD 180
PD 240
PD 290 
Robot 12C
Robot 24C
Robot 36C
Robot 72C
SC-1 32 sec
SC-1 16 sec
SC-1 8 sec
SC-2-60
SC-2-120
SC-2-180
Scottie S1
Scottie S2
Scottie S3
Scottie S4
Scottie DX

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