KVM K640 UHF Professional Wireless Microphone System with 4 Handheld Mic, 1 to 4, US Plug

Description

Features
1. UHF ultra-high frequency band is adopted, which has less interference than traditional VHF frequency band and more reliable transmission
2. DPLL digital phase-locked loop multi-channel frequency synthesis technology, within the 80MHz frequency bandwidth, with 400MHz channel spacing, provides up to 200 channel options, which is convenient for multiple sets of machines to use at the same time, and easily avoid all kinds of interference
3. Automatic frequency matching technology, even if the frequency of the transmitter and the receiver are messed up, you only need to press it lightly, the transmitter will automatically lock the receiver frequency and adjust the same, easy to use
4. Unique lock function of transmitter and receiver color lake to prevent misuse
5. The LCD screen makes the working status of the receiver and transmitter clear at a glance
6. Wireless transmission system, using two AA batteries (not included) to supply power, using high alkaline batteries can be used for a long time (high power 10 hours, low power 15 hours), if you use rechargeable batteries, the use time will be reduced

System Specification
1. Frequency range: 600-680MHz
2. Modulation method: FM wide band
3. Adjustable range: 80MHz
4. Channel: 200
5. Channel interval: 400KHz
6. Frequency stability: In +/-0.005%
7. Dynamic range: 100dB
8. Frequency deviation: +/-45KHz
9. Audio response: 100Hz-10KHz
10. Comprehensive signal-to-noise ratio: Greater than or equal 50dB
11. Comprehensive distortion: Less than or equal 5%
12. Working temperature: -10 degree C~40 degree C
13. Power consumption: 5W

Transmitter Specification
1. Antenna program:
-Built-in helical antenna for handheld transmitter
-Bodypack transmitter uses 1/4 wavelength whip antenna
-Conference style built-in helical antenna
2. Output power: 5mW-10mW
3. Spurious suppression: -60dB
4. Power supply: 2 x AA batteries (not included)
5. Use time: 10 hours at high power, 15 hours at low power

Receiver Specification
1. Receiver mode: double conversion superheterodyne
2. Intermediate frequency:
- Frequency: 110MHz
- Second Frequency: 10.7MHz
3. Wireless interface: BNC 50 ohm
4. Sensitivity: 12dBuV (80dBS/N)
5. Sensitivity adjustment range: 12-32dBuV
6. Spurious suppression: greater than or equal to 75dB
7. Output level: +10dBV
8. Supply voltage: DC 12V 1A