TR507 FM Transmitter Long Range for Drive-in Church

SKU: F9243A

Regular price $199.99~$259.99

Retekess TR507 FM Transmitter RDS digital coding technology, stable signal, longer range, high-quality sound MIC AUX USB Bluetooth TF card Audio Input The Golden one has been Out of Stock Please Order the Black TR507

Retekess TR507 FM Broadcast Transmitter Long Range for Drive-in Church in Stock

As we all know, the COVID-19 is more serious in the whole world. The governments advice us to stay at home to keep safe.

So we have the new way to do the church services now-Drive-in church using the FM broadcast transmitter in the parking lot. 

Many FM transmitters in the market are out of stock, but Retekess makes the new one meet the marking needs.

Let's check the details of TR507:

(1)LCD display                             (2)Down                (3)Up            (4)1-4 Partition key (Only apply to our special receiver)

(5)1-4 Partition key (Only apply to our special receiver)              (6)Indicator( when it light up, it show the frequency is locked)

(7)OK ( Confirm and Lock/Unlock frequency)                               (8)USB port                           (9)TF card port   (10)Indicator (MP3 status)

(11)Last song / Volume +           (12)Play/Pause                           (13)Next song /Volume -     (14)Loop             (15)Bluetooth

(16)Bluetooth status indicator    (17)Power                                   (18)Microphone Jack           (19)Microphone Volume            

(20)ECHO                                    (21)Output Volume                     (22)Treble                            (23)Bass              (24) AUX input

(25) AUX output                          (26) DC 12V power input  

Retekess fm transmitter broadcast for church.jpg

retekess fm transmitter for church drive-in.jpg

The feature of TR507 FM Transmitter

  • Work in long range and with the good quality of the sound

  • Support bluetooth, TF card

  • Support Frequency lock 

  • High quality with full metal material

  • In stock available

  • FM transmitter: 270 * 195 * 70mm   with package: 390 * 255 * 90mm

Operating Instructions

1, Basic Operation

1) Confirm the working frequency (it shows on the display)

2) Extend the antenna (28) vertically to a suitable length according to the following data, and make sure there are no obstacles around.

85MHz ----- 88cm

100MHz ----- 75cm

107MHz ----- 70cm

3) Transmit music or speaking

Microphone: Insert a 1/4 inch mic to the Mic Jack (18), then adjust the volume (19) or ECHO (20) keys to a suitable level.

Aux: Insert the external audio source cable (such as deck, VCD, etc.) into the AUX input jack (25), adjust the Treble (22), Bass (23) and Playback Volume (21) to a suitable level.

Play music or Bluetooth: Insert the U disk, TF card or connect the Bluetooth with other device, adjust the Treble (22), Bass (23) and Playback Volume (21) to a suitable level.

4) AUX output: The TR507 FM transmitter is equipped with a AUX output jack that can output the sound source of the item to provide a signal source for other equipment (such as power amplifier, transmitter, etc.).

2, Frequency Setting

Press the OK button (7) and make sure the Indicator (6) light off, then press the Up (3) or Down (2) button to select the needed frequency, press the OK (7) button again to confirm and lock the frequency. It is done and the indicator (6) light on.

Please fill in your procurement needs and contact information


1) Working voltage: DC 12V ± 10%

2) Frequency range: 87 ~ 108MHz (3MHz work selected by the user)

3) Frequency step: 100KHz

4) Frequency deviation: ≤1KHz

5) Coverage radius: 2 KM

6) Modulation frequency offset: ± 75KHz (at 100% modulation)

7) Pre-emphasis: 75μS

8) Audio distortion: ≤1%

9) SNR: ≥55dB

10) Harmonic / clutter radiation: <60dB

11) Frequency response: ≤ ± 1.5dB (100Hz ~ 10KHz)

12) Audio input level: 0dBm / 600Ω (unbalanced)

13) RDS coding method: DPSK

14) RDS subcarrier frequency: 57KHz ± 6Hz

15) RDS frequency deviation: ± 2.4KHz

16) Audio output amplitude: 2000mVpp

17) Audio formats: MP3, WAV, APE, WMA

18) Working temperature: -25 ℃ ~ + 45 ℃

Q: Does the FM transmitter in stock?

A: No, the item is so pupuar, and it is out of stock om 17th Apr, the next stock will be 3 weeks later.

Q: How far does the transmitter work?

A: 1.5KM-2.5KM

Q: Can i use the FM transmitter for the drive-in church in the parking lot?

A: Of course, the frequency is from 87-108MHz, you can set it with the same frequency fo your car radio.



No power

1. The adapter is damaged

2. The plug is loose and reinserted or replaced


Large transmission noise

1. Make sure the audio signal cable is connected well

2. Adjust transmitter antenna length

3.Are there strong interference around the transmitter antenna

Short Range

1.Adjust Transmitter antenna length

2. The transmitter antenna is too close to the metal object

3. Make sure the frequency of the transmitter is consistent with the center frequency of the antenna


Transmitter alarm

1. Adjust the antenna length

2. Make sure the antenna length is consistent with the transmitter frequency band

Please fill in your procurement needs and contact information