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This operated as described. It puts out a clear strong fm stereo sound. I’m using it for my xm radio to connect to my Cardo helmet communication system. Works great.
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Best one I have tried thus far: You'll need a compressor.
The good: It is easy to set frequency and audio input level. The signal is relatively clean, the unit doesn't seem to cause much interference and broadcast badly on the frequency harmonics. This is very good when compared to the cheaper dirty Chinese transmitters that splatter all over the band. The bad: The unit under deviates within the legal FM bandpass so it is impossible to achieve good volume on the receiver before clipping or distortion. If I were able to increase the FM deviation the problem would be resolved, however, there does not appear to be a way to do this. My second criticism is one that I understand being restricted by FCC regulation, however, I will still state that the signal is weak. For those using this product, ditch the telescoping antenna and use the wire antenna they include in the box. Try to run the wire antenna as straight vertical as possible and away from other metal structures. Using the wire antenna will dramatically improve your transmitter broadcast range.It is not necessary to use batteries to eliminate AC line noise as some others have suggested. I was able to eliminate said noise via use of a Ferrite on the adapter line.Update: I have been able to greatly increase the audio level (loudness) by utilizing an audio processing compressor between the audio source and the transmitter. I would say that I am much more near the loudness level of broadcast stations with mitigated or unnoticeable distortion levels. Those big FM stations use compression to get what has come to be known as "The Sound of Radio" and relates to something known as "The Loudness War." Either way, I purchased audio processing hardware to compress the audio and recreate that big radio sound. At this point I am much happier with the product.As a side note, if your audio source is a PC you can accomplish the kind of compression that radio stations do with software. There is an addon to PulseAudio on Linux that does the job. There are Windows solutions also. I won't mention product names here as I am not sure the Amazon guidelines.Recommended reading: Do an online search for "Audio Compression Options for FM Broadcast" and you should be able to glean what you need to do and know in order to give you much better sound with this transmitter!
Top reviews from other countries
Amazon Nubie
Weak signal make poor sound quality
Reviewed in Canada on January 6, 2020
brian juby
Works great! Able to get all radios in my home ...
Reviewed in Canada on October 16, 2018