FM microphone wireless pickup wireless audio emission FM launch MIC core board V4.0

The default frequency of baby shipments is about 100MHz, thank you!

Baby has been upgraded to V4.0 in December 2014. The classic old baby who has been sold for 4 years (from V1.0 to V4.0 version has more than 6,000 sales, it has been changed nearly 10 times). Welcome to new new boards). WelcomeOld customers buy!

Baby's detailed test video, please copy the address bar under the baby, then click to Youku video to watch, thank you!

http://v.youku.com/v_show/id_xnzqxmdq4.html

Notice:

The delivery of this baby is the real object in the picture above. The core board does not include a power supply lead and antenna. After the customer buys back, it will be freely played (welded battery or launch antenna, in the figure+representing battery positive electrode,-represents battery negative electrode, ANT represents antenna lead end, The antenna generally uses a 70 cm wire!)

Baby function:

The baby transforms the sound around the plate of the plate into the frequency adjustment radio signal to launch, and realizes the pickup and radio frequency adjustment of the pocket and radio.The transmitting frequency can be adjusted to the national standard frequency band of 88-108MHz.You can use the radio and mobile phone (the antenna sensitivity with the headphone cable is not recommended as a receiver) as a receiver!Baby is widely used in the occasions where the voice pickup transmission, audio MIC, old people and children sleep monitoring, etc.

Baby characteristics:

Baby has an unparalleled wide voltage work range, from 0.7V to 9V!IntersectionThose who understand the electrons understand that the voltage of a PN knitting is 0.7V!That is, any battery can make the baby work well (a single dry battery, lithium battery, buttons, carbon accumulation batteries, solar batteries, lead -acid batteries, various common batteries!)

The signal transmitted by the baby is pure, and the strange signal suppression reaches -60dBC!In the figure above, it is very clean within 96.5MHz 50MHz bandwidth. The actual signal is as shown below (Test 3.6GHz radio frequency spectrum analyzer)

Baby has a very low power consumption. The current working current of 0.7V is only 0.9mA. Use a single 5 dry battery 1.5V to power. The current is only 4.2mA. If the No. 5 nickel -hydride battery with a capacity of 3000mAh is used, it can work 3000/4.2 consecutive consecutive work.= 29.76 days!IntersectionIntersectionWow, a month!

The frequency can be adjusted, the adjustment range covers 88-108MHz, which is actually widely wider than this frequency.

All the baby adopts patch components, stable and reliable performance, and good product consistency. It overcomes the pins distribution parameters of conventional plug -in devices. All of them are welded with machine patch, which are firm and reliable.

The baby is small, only one yuan coin size, which is convenient for carrying and hidden.