As I have mentioned that it is really hard for anyone to provide an exact range of the wireless FM transmitter. However, there’s are some suggestions for you to make a better range of the transmitter in the least expensive ways.
Here is the sample of TR502 FM transmitter
1, Install the outside antenna correctly
First, pick your frequency
Next, check the chart for length.
Pull and measure
76-108MHz frequency & Antenna length table for your reference:
The direction is to direct what frequency to extend the telescopic antenna in inches. The antenna may be attached to the transmitter or may be used for mobile and is also supplied with a magnetic mount.
2, Set the power the maximum
The TR502 FM transmitter has 8 levels of output power options. If you need the longest range, you have to set the power to the max to powerful enough.
3, Using the unused frequency
I would recommend you select a frequency that is clear and unused in your area, because the crowed frequency may interfere with each other to reduce the distance.
4, The higher the antenna the better
Buildings and trees are enemies to signal and try to keep the antenna as up as possible, say on the topmost floor of your building.
Generally, the broadcast range is greatly affected by how much power you are running, where you place the transmitter, what is around the transmitter and what other broadcasters are in the area. I hope it helps for you to use the Retekess FM broadcast transmitter.
Should you have any other concerns about the FM transmitter, please email us freely at email@example.com. We will be sure to provide you the best support.