Contact: lanyue Email: [email protected] Skype: lanyue99991 Web: www.czhfmtransmitter.com
11. Frequency stability: 15PPM,PLL
12. Frequency response: 30Hz
～
15KHz,pre-emphasis 75us
13. Charge time: about 5hours, 5V voltage
14. Charge port: MINI-USB-5PIN
15.Display: LCD display
16. Data storage: Frequency/Volume/Power output/Mute/Stereo settings will be stored with EEDATA, they will not lose because of low battery or battery taken out.
4)
About broadcasting range: About Broadcasting range: The test was done in open area without obstructions. We were using Tecsun PL-600 radio as the receiver, antenna
has been fully pulled out, the microphone line is stretched naturally. In this way can receive the best distance. Please kindly note that due to different working environment
and sensitivity of radios, the actual broadcasting distance might be different from ideal. Since the microphone line also functions as antenna, please try to stretch that as
possible as you can to strengthen the broadcasting effect.
5)
Volume Adjust: The volume adjust is the key part in the operation of this FM transmitter. The sound will get distortion when volumes gets too high, even strong screaming
sound. If volume is too low, the receiver can hardly receive the sound clearly. Firstly, make sure the microphone keeps a stable distance and try to put as close as possible
to the mouth when speaking something, then adjust the volume. If the distance between microphone and mouth changes, readjust the volume. We recommend to adjust
the volume at level 5 when using microphone, and turn off stereo mode. When broadcasting from MP3, please turn on Stereo mode to make sure the receiver ends gets
the best sound.
6)
About broadcast power: For the pureFM-980P, due to the relative high RF power output, the device will heat fast especially after power level 3, this is normal and please
don’t worry too much about it. The different of device temperature with environment temperature will not exceed 10 celsius degrees. Please try to avoid power on the
transmitter without inserting microphone in case the transmitter shows a dead screen. Keep the receiver at least 5meters from the transmitter. When the distance is far
enough, please try to use low level power output to realize the transmission.
