Description

25W 400MHz-470MHz UHF Radio Analog/Digital Power Amplifier Transceiver 13.8V The 25 watt this baby has been available in both a digital and analog version. The analog version is suitable for ordinary walkie-talkie use. The digital version has a high-speed transceiver switching and linear amplifier suitable for digital modulation walkie-talkie use, but also can give half-duplex digital transmission radio to increase the transmit power! Product Features: This product internal integration of fully automatic transceiver switching circuit and amplifier, increase the transmitter power of the walkie-talkie, for the reception of the machine and the antenna pass-through way, the reception of only less than 1dB loss, this loss can be ignored, there is no effect on the reception of the sensitivity. (Handheld factory sensitivity has been adjusted to the best sensitivity of the machine can achieve, generally do not need to add another amplification, if you increase the amplification instead of compression of the dynamic range of the receiver may also cause poor sensitivity, the industry, so there is no amplification of the reception of the handheld amplifier!) Ordinary 2W transmitter power of the machine after amplification up to 19-20W, ordinary 5W transmitter power of the machine after amplification up to 25W. so that your hand station immediately into a "car station"! Baby features for the omission of the power switch, only a few watts of RF signal power input at the time of transmission to open the amplifier power, in addition to no other way to get the power to start. When receiving, the amplifier automatically disconnects from the power supply and does not consume power when receiving. This allows you to never have to worry about whether the power has been turned off manually or not. The red transmit indicator and power light will only be on when transmitting, and will be off when receiving. Parameter. Frequency range: 400MHz-470MHz covering all U-band frequencies. Transmit power: Maximum 25 watts, 19-20 watts at 2W input, maximum output at 5W input! Receiving loss: better than 1dB, the value of the receiving sensitivity can be ignored. Power supply: 12-14V, the higher the supply voltage, the higher the transmitter power, 25 watts is 13.8V measured! Power supply current: 3A when transmitting, no current consumption when receiving. Suitable for models: various U-band handhelds and UV dual-band handhelds in the U-band operating mode (such as TG-UV2). Handpiece power: suitable for a variety of handpieces with a transmit power of 2-10 watts Overall dimensions: 11.5 cm * 8 cm * 5 cm (L * W * H) Usage. 1 Please use the RF cable that comes with the unit to connect the SMA female connector (small gold-colored threaded female connector) on the amplifier to the antenna holder of the handstand (to the place where the handstand screws the antenna)! That is, the small gold-colored connector in the picture is connected to the hand station. 2 Connect your seedling antenna or stick to the big thick pin M female connector of the amplifier, that is, the big thick pin M female connector of the amplifier screwed to your antenna! The antenna generally comes with a feed line, this feed line is the thicker the better, the shorter the better! Too thin and too long signal attenuation! 3 will be the amplifier host on the red line connected to the positive terminal of the power supply, the black line connected to the negative terminal of the power supply. If used in the car with our attached cigarette lighter connector can be directly connected to the cigarette lighter, if the family use on the connection of the self-provided power supply. The power supply is required to be able to output a stable current of more than 3A, and the output voltage of the power supply should not be reduced too much when outputting current! After the above three steps, you can press the handstand PPT transmitter button to start transmitting, it is very easy, not complicated, everyone can operate! Shipment kit contents. Shipped as a kit containing the amplifier host, both ends of the SMA male-to-male connector 0.5 meters of cable, SMA female-to-female adapter, cigarette lighter connector (for connecting the car cigarette lighter).