W 3.5MHz-28.5MHz Micro PA Digital Intelligent Shortwave HF Power Amplifier with Power SWR Meter + LPF Filter For Radios

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Home T Amplifiers with Power SWR Meter LPF Filter Shortwave HF Power Amplifier Intelligent W for RadioFeature:1. Temperature Protection:If the amplifier detects a temperature above 35 degrees, it will automatically turn on the cooling fan, below 33 degrees it will turn off the cooling fan. If the temperature is above 55 degrees the amplifier will switch off and a flashing reminder and buzzer will sound as an alarm. If the temperature drops below 55 degrees, the amplifier will automatically activate. At the same time, if the power amplifier is transmitting, the fan will activate to stop transmiion immediately and the fan will switch off after a 10 second delay, if the temperature is above 33 degrees, the fan will continue to operate. The fan will continue to turn off until the temperature falls below 33 degrees when the amplifier is not transmitting.2. High and Llow Voltage protection:The power amplifier will turn off when the voltage is below 8.5V or above 14.5V. The hardware is also designed with transient suppreion diodes to protect the power supply when the voltage is above 15.8V or when the power supply is inverted. In addition.3. Automatic LPF Filter Switching:In this mode of the power amplifier, the appropriate LPF filter can be switched automatically without the need to connect a band control line. In addition, the power amplifier circuit has a frequency module that enables it to automatically switch to the appropriate LPF filter depending on the input to the power amplifier. This means that the ICOM band switching protocol is not required for automatic LPF filter switching. In addition, the overall switching speed is le than 100ms, enabling fast switching.4. Real-time Display of Power and VSWR:If the VSWR exceeds 2.0 or the power exceeds 55W, the amplifier automatically switches off, the display flashes to indicate trigger protection and the buzzer sounds an alarm. The Power Amplifier Pro has a display to show the real time power and VSWR.5. High Speed Mode RF Trigger Switching:This mode of the power amplifier does not require an external PTT control line to be connected. The high speed mode RF trigger is implemented by interrupt mode, so the response time is very fast. With this automatic trigger, you do not need to connect a PTT control line to automatically switch the amplifier to transmit mode via your input signal.

Specification:A Type:Origin: Mainland ChinaMaximum Power Per : WFrequency range: 3.5MHz - 28.5MHzInput power: 2-5WInput VSWR: ≤2.0@ΩMaximum output power: 40-WOutput impedance: ΩSupply voltage: 8.5V-14.2V; 13.8V (typical)Current consumption: ≤12AMaximum operating temperature: ≤55°CDimensions:88x38x143mm/3.46x1.49x5.62inch (excluding bumps)88x38x160mm/3.46x1.49x6.29inch (including protrusions)Simple operating instructions:1. Connect the antenna to the ANT connector.2. Connect the radio to the connector and adjust the radio's output power to about 2W.3. If neceary, connect the ACC connector to the radio's ACC connector.4. Connect the power cable to the radio's dedicated power supply or battery and plug it into the power socket of the power amplifier.5. Pre the button of the radio and observe the output power of the power amplifier. If the power does not reach W, increase the output power of the radio, otherwise reduce the output power of the radio. But in any case, do not increase the output power of the radio above 5W.Attention:1. Please observe the relevant radio laws and regulations and use this amplifier legally.2. Do not use mismatched antennas, feeder cables or RF connectors.3. Do not reverse the positive and negative terminals of the power supply.4. Do not connect the power supply to a power source with a voltage exceeding 14.2V.5. Do not use this amplifier during thunderstorms and disconnect from lightning storms.6. Do not use the amplifier in the rain, in water or with humidity greater than 75%.7. Do not disaemble the power amplifier without permiion. Contact the power amplifier circuit board with the components in the transmitting state may the skinSpecial reminder:1. The automatic band switching function when switching from the high frequency band to the low frequency band will be a case of transient output of larger harmonics. If you are concerned about this, it is recommended to use the ICOM band switching protocol to control the switching of the band power amplifier.2. With the continuous upgrading and improvement of hardware and , functions and performance may vary slightly without notice!Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.B Type:W HF Amplifier with TX/RX 3-24MHz High-frequency Power Amplifier 13.8V for USDX FT-817 ICOM IC-703 IC-705 IC705 Elecraft KX3 QRP FT-81Feature:1. Automatic switching:Built-in TX/RX auto cut circuit, no need for special PTT line, with signal input automatically switch to transmit mode.2. Fan:Built-in powerful fan, the temperature reaches the set value automatically open cooling.3. Size:The size of the power amplifier is about 1 * mm, which is small and portable.4. Shell material:The power amplifier is made of excellent and durable ABS material, with fine workmanship.5. Attention:Before use, you need to use nanoVNA or similar tools to determine the transmitting antenna impedance of Ω, SWR < 1.5. Otherwise, the power tube will be damaged due to the mismatch of transmitting impedance!Specification:Origin: Mainland ChinaModel Number: HF Power AmplifierOperating frequency: 3 - 24MHzTransmiion and traction power: 1-5WOutput power: WInterface impedance: ΩWorking voltage: 13.8VShell material: ABSSize: about 1xmm/5.91x1.97in

Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.

A:1 xPower AmplifierB:1 X High Frequency Power Amplifier1 X Power Cord