Long-range FM transmitter: The power in the picture below can reach 2000 meters, which can be regarded as a long-range FM transmitter.
The picture above shows a 2km FM transmitter circuit. This circuit is divided into three stages: oscillation, frequency doubling, and power amplification. V1, C2--C6, R2, R3 and L1 in the circuit form a capacitive three-point oscillator. Its oscillation frequency is mainly determined by the parameters of C3, C4 and L1, and its oscillation frequency is 44 ~ 54MHz. The signal is from the center tap of L1 The output is then coupled to V2 through C7 to amplify. The double frequency signal of 44 ~ 54MHz is selected by C8 and L2, that is, 88-108MHz. This signal is coupled from C9 to V3 for power amplification. V3 consists of three 3DGl2 transistors connected in parallel , Can expand the output power. When the circuit works normally, the current is about 80-100mA. The three 3DG12s that make up V3 can be added with appropriate heat sinks to prevent overheating. When making, L1 ~ L3 use 0.31mm enameled wire on a 3.5mm diameter rod
48 port fiber optic patch panel is used as terminal equipment of fiber optic cable for optical fiber wiring, fixation, fusion and patching.Fiber Optic Patch Panel 48 Port is applicable for straight-through connection and diverged connection in aerial layout , duct and direct buried. It can protect Fiber Connectors.48 Port Patch Panel suitable for SC, FC and LC adapters.Foclink can provide the manufacturer 48 port fiber optic patch panel price well and we are always here for you 7days and 24 hours.
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