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MKTCAM Mini Wireless Video Transmitter System 1.5GHZ 700mW MKT-715TR
 

Wireless video transmitter receiver for home security MKT-715TR On a small scale, the wireless video transmitter system 1.5GHZ works the same way as a TV antenna only instead of a local broadcast station sending a signal out to anyone who has an antenna, the TV in your living room will be the sender of the signal for the receiver in your bedroom to decode. The way it works is connect the television in your living room to the transmitter, and the TV in the bedroom to the receiver. The signal travels through the open air, and is decoded by the receiver in the bedroom. My suggestion is to have the transmitter and receiver in as open a space as possible to avoid any interference. Line of sight is a term used for wireless transmissions. This is where the transmitter and receiver can see each other. This is also the best way to transmit. An example of line of sight would be listening to FM radio and losing the signal when traveling in a long tunnel or driving between two large buildings. At this point, the transmission tower can not 'see' your car antenna, which is why your signal was lost.

Working Voltage DC 12V Working Ctrrent 500mA Output Frequency 1.4G/1.5G/1.6G Channel Number 12CH A/V frequency in-phase Output Power 1500mW Video Output 1 Vp-p(FM) Audio Output 1 Vp-p(FM) Audio carrier ware 5.5M 6.0M Weight transmitter 82g Diemsion(L*W*H) 73*41*14 mm Unobstructive Effective Range 700~1400 Metres (No obstacle) Package transmitter&receiver\AV&TX cable\two antennas Operation Temperature -10℃~+50℃ Features: 12 Channels, 1.5G, 700mW wireless transmitter System. Can wireless transmit Camera,TV,DVD Audio/Video Signal.