Do you have a question about the Retekess TR508 and is the answer not in the manual?
Controls the audio output level of the transmitter.
Adjusts the microphone input sensitivity.
3.5mm jack for connecting audio sources via cable.
3.5mm jack for connecting an electret microphone.
Button to turn the FM transmitter on or off.
Increases the transmitting radio frequency.
Decreases the transmitting radio frequency.
Shows the current radio frequency and operational status.
Port for connecting the 11-13V DC power adapter.
Connection point for the FM transmitter antenna.
Steps to connect the antenna and power supply to the transmitter.
Connect external audio devices like MP3 players using the audio cable.
Guide to operating the transmitter and tuning to desired FM frequencies.
Steps to turn on the transmitter and adjust FM frequency channels.
Instructions for turning the FM transmitter on and off.
Key points for maintaining the product's condition and safety.
Steps to resolve issues if the transmitter is not functioning normally.
Solutions for distorted or unclear audio output.
Procedure to set high or low power output for the transmitter.
Procedure to set the transmitting frequency range.
Instructions for safe usage and awareness of RF energy.
User awareness and control for occupational RF exposure requirements.
Information on licensing for operating radio equipment.
Consequences of unauthorized modifications to the transmitter.
Device compliance with Part 15 of the FCC Rules.
Declaration of conformity with EU RED Directive.
Warning about small parts for children under 3 years.
Advice on using volume and listening to prevent hearing loss.
Warning against using damaged antennas to avoid burns.
Precautions for handling batteries and preventing short circuits.
Note on heat generation during extended transmission.
Warnings and instructions regarding the use and care of the charger.
Information on using manufacturer-approved accessories for compliance.
Instructions for proper disposal of electronic products in the EU.
Fields for recording product model, serial number, and purchase date.
Details on warranty terms, service, and conditions for exclusion.
| Frequency Step | 0.1MHz |
|---|---|
| SNR | ≥60dB |
| Stereo Separation | ≥40dB |
| Antenna Impedance | 50Ω |
| Audio Input Impedance | 10KΩ |
| Modulation Mode | FM |
| Output Power | 0.5W |
| Audio Input | 3.5mm |
| Power Supply | DC 5V |
| Transmission Distance | 100m in open area |
| Operating Time | 4-6 hours |
| Microphone Input | 3.5mm |
| Operating Temperature | -10°C |