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Retekess TR502 FM Transmitter Radio Station and PR13 Mini FM DSP Radio for Church Drive-in Movie Light Show

SKU: F9219D-F9213A

Regular price $999.00

Tuning the transmitter and radio receiver to the same frequency, one can listen to broadcasts from the TR502 transmitter via the PR13.

8 levels of adjustable RF power for open-air transmission up to 2-3 km/1.2-1.8 mi.

Transmission frequency can be set from within the range of 87 ~ 108MHz

Radio transmitter kit is easy to use and requires no skills or experience.

The FM transmitter can be connected to an unlimited number of FM radio receivers, so if your team grows, just add more radio receivers. Buy more PR13 radio receivers.


-- Our TR502 FM Broadcast Transmitter and PR13 portable FM Radio kit guarantees excellent sound quality with minimal static or interference, ensuring a crystal clear audio experience.

TR502 FM Radio Broadcast Transmitter

1. Aluminum alloy metal shell, durable and good heat dissipation.

2. TR502 FM radio transmitter supports MIC/AUX/U disk/Bluetooth audio input.,can wirelessly connect cell phones, tablets, and other Bluetooth devices as audio input.

3. With a high-fidelity U disk playback function, supports the lossless format FLAC/WAV, compatible with a variety of other commonly used formats.


4. Adopting advanced modulation system design, built-in PLL frequency division, audio pre-emphasis, limiter, and low-pass filtering circuit to support powerful signal processing.

5.This Portable FM transmitter supports stereo and mono switching.

6. Adopt a high-quality double ball bearing fan, reasonable heat dissipation channel, and excellent heat dissipation performance, when the temperature is too high, the display will show the temperature alarm, and at the same time, the machine will start to beep voice alarm sound.

7. Standing wave protection: when the antenna is not connected or poor contact, it automatically enters the protection state

8. Temperature protection: when the temperature inside the machine is too high, it will automatically enter the protection state.1/4 wavelength strong magnetic suction cup antenna, can be tightly adsorbed on the roof of the car or any metal plane object. It is convenient for moving the antenna to the outdoors, roof, balcony, or window, and more effective transmission and reception of electromagnetic waves.

PR13 Radio Receiver

1. Digital FM radio with advanced DSP technology, stable signal, and clear sound quality.

2. Radio receiver with lock button to prevent accidental operation.

3. 5 frequently used radio stations can be preset for quick and easy tuning.

4. Powered by 2 AAA batteries, supports recharging if your AAA batteries are rechargeable

5. Headphones are included with each radio. You can use your own 3.5 mm universal headset to connect the radio.

6. The portable PR13 FM receiver measures 3.6 x 2.1 x 0.6 inches and weighs 0.09 pounds. It fits easily in your pocket. Or you can hang it around your neck with the included lanyard to free your hands.

7. The radio supports a 24-hour clock in international time, so you can use it as a small portable clock.

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TR502 FM Transmitter Radio Station Specification:

FM Transmitter

Frequency range: FM:88~108MHz

Frequency step: 100Khz
Frequency stability: ±10PPM
Frequency stabilization method: PLL
Harmonics, noise radiation: ≤-50dB
Output impedance: 50Ω
Pre-emphasis: 75us
Audio distortion: 0.3%
Bluetooth distance: about 5m
Frequency response: 50Hz~15000Hz
Separation: ≥30dB
Frequency modulation: ±75KHZ
SNR: ≥60 dB
Antenna connector type: TNC
Operating temperature: -10℃~45℃
Transmitter size: 144 x 100 x 59mm
Transmitter weight: 545 g

Connector type: TNC

Gain: 2.15dB
Impedance: 50Ω
Maximum stretch length: 1150mm (3.77 ft)
Shortest contraction length: 210mm(0.69 ft)
Feeder length: 5m (16.4 ft)
Power Supply

Input voltage: 100~240V 50/60Hz

Output power: DC 12V 3A

PR13 Mini FM Radio Specification:

Sensitivity <3.5uV
Signal to noise ratio 45db
Stereo separation 32dB
Power supply 2 x AAA batteries (not included)
Earphone jack 3.5mm
Tuning increase 0.1MHz
Built-in speaker No
Dimension 3.6 x 2.1x 0.6in
Weight 40g / 0.09lb

Package Includes:


FM Transmitter

1 x TR502 FM Transmitter
1 x Power Adapter (Please tell us which type of plug you need)
1 x Telescopic Antenna
1 x Audio Line
1 x User Manual
PR13 FM Radio 10/ 20 / 30 x FM Radio
10/ 20 / 30  x In-ear Stereo Earphone
10/ 20 / 30  x Lanyard
1 x User Manual

Can I use the TR502 FM broadcast transmitter kit indoors?

Yes, but the signal transmission distance will be shortened due to walls and obstacles indoors.

How do I set up the FM radio broadcast transmitter?

Setting up the FM transmitter is simple. First, connect an audio source (e.g. smartphone, MP3 player) to the transmitter, or use an external microphone to connect to the transmitter. Then, select an available FM frequency that is not being used by a nearby radio station. Finally, tune the FM radio receiver to the selected frequency and you will hear the transmitted audio.

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