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MultiMode is an application which allows your Mac to decode several different modes of non-voice communication often heard on shortwave. It allows you to decode and display morse code, RTTY, fax, and many other modes on your Mac, without any extra hardware! MultiMode features sophisticated digital filters, for pulling weak signals out of the noise. Lite version only includes RTTY, CW, and FAX modes.

What's New

Version 5.9.2: Fixed some bugs in CW mode that affected the accuracy of the speed.


Mac OS X 10.1 or later

*Previously available here

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Anonymous Member IconReview

As expected this program did not work on my G5 20 inch. It did display the signal but it did not pass through the signal to allow me to hear it through my speakers WHICH IS A MUST HELLO! I am using my Phones output to the MAC input. I need to be able to hear it to tune to a new frequency if needed. I have used many Windows CRAP freeware decoders but I have since grown up to a MAC and I am not going back to CRAP! So I am looking for a decoder that works with Mac OS X. I do not care if the developer replies I have never really like this software even way back when. So if you are a ham and know of a good program preferable one that is FREEWARE i would much appriciate it.

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Version 5.3
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Current Version (5.x)


Downloads 4,886
Version Downloads 1,353
License Shareware
Date 27 Feb 2007
Platform OS X / PPC 32
Price Free