TR509
FM TRANSMITTER
INSTRUCTIONS
Thanks for buying the TR509 protable FM transmitter
Before you use this transmitter for the first time, please read the user manual carefully
and operate the device following the instructions. It is multi-functional device but easy
to operate. We sincerely hope our products will bring you happy experience.
Precautions for Use
● Ensure that the power supply voltage is within the extent permitted
● Maintenance can only be professional and technical personnel to operate
● Do not touch the antenna after the transmitter is powered
● Do not boot the machine before the antenna is connected
● Do not use in an explosive environment (such as gas stations, gas, steam, etc.)
● Do not place the transmitter in extremely dusty, humid, high temperature to use
● Please be sure to use complying with local radio regulatory agencies require
Product Features
1. High-fidelity high stability: Motherboard is adopted by next-generation integrated
NC FM stereo radio transmitter chip the BH1415 from Japan ROHM Company,
built-in PLL frequency PLL, audio pre-emphasis, limiter and low pass filter circuit to
achieve high fidelity, high stability signal transmission
2. Stereo clear sound: the control panel is consisted of AT89C2051 and AT24C02;
after the stage by two 2SC3355 and one 2SC2053 total of three power amplifier to
ensure that the three-dimensional sound quality output effect
3. Good shielding: Structure design closely, not because of external signal induction
frequency drift
4. Excellent heat dissipation: The stability of the chassis using high quality aluminum
alloy material, lightweight and excellent heat dissipation can work continuously to
ensure that equipment
5. Easy to use: Panel use LCD to display the transmission frequency, according to
the identification of the interface to connect to other hardware, easy to adjust and
it is intuitive
6. Switching power: 1W and 7W power can be switched to use
7. Switching frequency: Can arbitrarily set from 76M to 108M range from 86M to 90M
95M to 108M, 87M to 108M
8. This subsection is with a microphone and volume control
Product Configuration
Operating Instructions
● Front panel and rear panel
● Audio volume and microphone adjustment
● Frequency adjustment
● Power adjustment
The output power of the machine in two stages:
High-power file (H): >7W;
Low power file (L): <1W
Turn off the power adapter, disconnect the transmitter power finish line state to
follow these steps:
1. First press and hold the power switch【 】 ,and connect the power (DC 12V) to
the antenna, after 3 seconds after release the key, at this time into the power adju-
stment status, the LCD display shows "L" or "H" (default image file H high power)
2. Press【▲】 , and set it as high power (H)
3. Press【▼】, and set it as low power (L)
4. Select the desired power profile, and press【 】 .power setting finished, and it
will into frequency range setting state.
● Frequency range setting
(1) After the power setting, it will enter the frequency range setting state, power
setting is completed, press the LCD screen display shows a set of frequencies,
the frequency data is the high-end of the operating band (below)
(2) For example, to set the operating frequency range of 90MHz to 100MHz, then
through the key【▲】【▼】 , adjust the frequency data as 100.00MHz
(3) Band after the completion of the high-end setting, press key【 】, the band
will enter the low-end setting, LCD displayed data band low frequency (below),
through key【▲】【▼】to adjust the data to 90.00MHz
NO.
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Product name
Host machine
antenna
Power adapter
Audio cable
manual
(Factory default frequency is 108MHZ)
Specification
TR509
TNC
DC 12V/1.67A
3.5mm audio cable
Instruction manual
Quantity
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Unit
piece
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set
piece
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① Audio input volume adjustment
② The 3.5mm audio input hole
③ The power switch button
④ Frequency increases button
⑤ Frequency down button
⑥ The 3.5mm microphone input hole
⑦ The microphone input volume adjustment
⑧ Display
⑨ Power supply interface
⑩ TNC antenna interface
Audio volume control
The left smaller volume, right larger
MIC volume control
The left smaller volume, right larger
Step is 100KHz
adjust up adjust down
Henan Eshow Electronic Commerce Co., Ltd
Add: 7/F, Sanjiang Building, No.170 Nanyang Road,
Huiji District, Zhengzhou, Henan, China
Facebook: facebook.com/RetekessRadio
E-mail: support@retekess.com
Web: www.retekess.com
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