The transmitter frequency of the lowest 70MHz. Adjust L1 to adjust the firing frequency. When you have finished soldering, you can use do a little adjustment to receive the ordinary radio. This is a DIY kit, you need to assembly it.
Due to the circuit of this kit is simple, the emission frequency is greatly affected by the environment, touch or close to the circuit board, antenna or shell may lead to changes in the frequency of transmission, it can be used as a model of the launch model, not recommended for industrial or commercial use.
Package name: FM Transmitter Kit Model: RF-01 Operating voltage: 1.5V (AAA battery *2) or DC3-6V (battery does not includes) Operating current: 5mA (3V) - 10mA (6V) Frequency range: 70MHz Launch distance: 5-30 meters (Affected by the level of production and the use of the environment) Antenna length: 200mm soft wire Sensitivity: 1 meter range of speech can be received Battery box: Yes PCB size: 49 * 13mm Dimensions: 55 * 35 * 15mm Package weight: 18g