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 follow-
ing 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.
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