UD-807 dual channel wireless microphone
Functional characteristics
1 use UHF690-860MHz frequency band to avoid interference frequency
2 automatic infrared to the frequency, the transmitter and the receiver automatic synchronous transceiver
3 using phase locked loop PLL frequency synthesis stable system, provides 200 channels
4 using the most new type of high frequency filter, to maximize the filter out of band interference signal
Two using 5 times the frequency of high frequency circuit design, with a high sensitivity
6 multiple squelch control circuit, refused to open the machine external interference squelch system
7 specially designed speech compression expansion circuit, which greatly improves the signal to noise ratio
8 unique circuit design, dynamic, wide frequency response, low noise
Receiver index:
1 receiver mode: two times the frequency conversion super heterodyne
2 if frequency: the first if: 110MHz, second if 10.7MHz
3 wireless interface: BNC/50
4 sensitivity: 12dB V (80dBS/N)
5 sensitivity range: 12-32dB V sensitivity range
6: spurious suppression is greater than or equal to 75dB
7 maximum output level: +10dBV
Technical parameter system index:
1 Range:UHF 690-860MHz Frequency
2 mode: Modulation broadband FM
3 range:50MHz adjustable
4 Channel:2x100
5 stabilization frequency: + 0.005%
6 range:100dB dynamic
7 deviation range MAX: + 45KHz
8 respond:80Hz-18KHz Frequency (+ 3dB)
9 Ratio S/N: > 105dB
10: T.H.D = 0.5%
11 temperature:-10 operating C ~ +40 C
Distance:80m 12.Operating
Transmitter indicator:
1 antenna program: with hanging transmitter with 1/4 wave whip antenna, handheld microphone built-in spiral antenna
2 output power: high frequency 30Mw, low frequency 3Mw
3 spurious suppression: -60dB
4 power supply: two DC 1.5V AA battery
5 use time: 30mW is greater than 10 hours, 3mW is greater than 15 hours