On the KiwiSDRs, press the
SAM button until it cycles to
QAM. QAM is the C-QUAM AM-stereo mode on the Kiwi. Also, if you zoom all the way in on the waterfall, you'll be able to see the ±25Hz pilot tone if a station is broadcasting in C-QUAM AM-stereo. However, unlike FM stereo, the pilot tone is technically not required for AM-stereo to work, except standalone radios without a "forced stereo" decoder won't decode without it.
For example, here's 540 WXYG who currently broadcasts in C-QUAM AM-stereo.
![](https://i95.servimg.com/u/f95/15/46/86/41/c-quam11.png)
In the chance any of you folks ever hear a pirate claiming to be using "Kahn" or "Kahn-Hazeltine" AM-stereo, switch the Kiwi to
SAS mode. I have yet to hear a pirate doing Kahn.
For those using your own SDR, there is one SDR application that will decode C-QUAM AM-stereo:
http://www.sodirasdr.de/ It can also be used as a separate decoder application if you input an IQ signal from your normal SDR software or recording via virtual audio cable.