Mono, MPX, Stereo, Compression, Limiting, Processor, RDS. Which one do I use? Which one do I need?

By Yoneli J
https://aareff.com/yoneli-jimenez.htm

FM Transmitter Mono/MPX Version.

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Stations with more engineering experience may use this version, this is because it does not include limiting or stereo coder circuitry. The audio limiting for this version must be externally provided and in accordance with the recommendations of http://www.aareff.com/ETR132.pdf. This version is typically used with external multi band processors, stereo generators and RDS generators such as the brands Orban or Inovonics. Not recommended for novice stations or beginners.

FM Transmitter Stereo Version.

This is similar to the Mono/MPX version except it is stereo and RDS cannot be used with this. Again stations with more engineering experience may use this version, this is because it does not include audio limiting. Again the audio limiting for this version must be externally provided and in accordance with the recommendations of http://www.aareff.com/ETR132.pdf. This version is typically used with external multi band processors and stereo generators such as the brands Orban or Inovonics. Not recommended for novice stations or beginners.

FM Transmitter Stereo Version with Audio Compression and Limiting.

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Most small radio stations and beginners will use this version, this is because it includes audio processing circuitry and suitable limiting to keep the transmitter in compliance with the maximum bandwidth permitted by the international regulations. There is also access to the MPX in and out on the back panel which allows all known RDS units to be connected. Novice stations with limited experience of FM broadcasting transmitters should purchase this version.