Some folks may remeber me asking about an AM Stereo Transmitter in this post http://part15.us/forum/part15-forums/transmitter-talk/c-quam-am-stereo-t...
Well I bit the bullet and purchased this transmitter.
The sound quality is pretty good, nice and loud. The sound quality is on par with the Full Power AM station, which is a great thing.
The internal compressor is a bit weak IMHO, but seems to work well and keeps the modulation full.
A bit of an odd feature of this transmitter is it tunes from 1024 kHz to 1775 kHz.
I did a VERY brief range test at the Full Power's studio. The Transmitter was placed on my desk with the supplied wire antenna stretched onto a ceiling fan, not at the full length either. The Full Power station has 2 foot thick concrete adobe walls, my office faces the street with a window. No ground connected at all, there is no ground prong on the wall wart either.
The signal was absolutely solid for 300-500 feet before dropping to a weaker signal.
The station remained listenable beyond 1,400 feet before I reached the end of the road (closed for construction). Turning onto an adjacent street the signal remained just as strong (now on the backside of the building, so the signal had quite a bit of building to make its way through, as well as a few other buildings). The signal again popped into full strength at 500 feet.
I do not have an AM Stereo tuner available to check how well the C-Quam works.