
Shireen 320~480 MHz 3.5 Watt Bidirectional Amplifier
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Product Overview
Shireen’s 320~480MHz 3.5 Watt amplifier is a compact and highly efficient RF amplifier designed for low-band communication systems requiring portable deployment and fast switching performance. Delivering 3.5 Watts peak output with high transmit gain and low noise amplification, this amplifier supports demanding RF applications while maintaining low power consumption. Its compact form factor and optional USB power capability make it suitable for mobile, tactical, and embedded wireless deployments.
Key Features
Smallest in Class
With 2" x 1.4", the smallest and most efficient 3.5 watt amplifier available for 320~480MHz band
Peak Output Power
3.5 Watt (35.5 dBm) peak output power for extended range
High Transmit Gain
20 dB Tx gain ±1.5 dB (30 dB optional)
Flexible Rx Gain
12 dB Rx gain standard with 20 dB optional configuration
High-Speed Switching
High-speed TX switching at less than 1 µs
Ultra-Low Noise Figure
1.2 dB noise figure for excellent receive sensitivity
Very Low Power Consumption
Highly efficient amplifier consuming only 50mA during Rx mode
USB Power Capable
Can be powered via USB* cable (optional) - simply power via USB port and connect with radio device
Flexible Power Supply
Can be powered via regulated 5V DC or unregulated 6~12V DC
Complete Kit
Unit comes with 6V DC power supply
Wide Temperature Range
Operates from -40°C to +70°C for demanding environments
Compact Form Factor
2.55" x 1.35" footprint weighing only 2 Oz
Dual DC Input Options
DC input via DC Jack 2.5mm or 12" flying lead
Domestic Manufacturing
Made in the USA
Technical Data
| Parameter | Rating / Detail |
|---|---|
| Product Name | 320~480MHz 3.5 Watt Amplifier |
| Operating Range | 320~480 MHz |
| Operating Mode | TDD, Time Division Duplex |
| Transmit Power | 3.5W (35.5 dBm) |
| Transmit Gain | 20 dB ± 1.5 dB (30 dB Optional) |
| Tx Input Power | 0 dBm min ±1 dBm, Max 15 dBm |
| Switching Speed | Less than 1 µs |
| Rx Gain | 12 dB (20 dB Optional) |
| Noise Figure | 1.2 dB |
| LED Indicators | Red for Rx, Green for Transmit |
| Power Consumption @6V DC | Rx: 50mA, Tx: 1A |
| Operating Temperature | -40 °C to + 70 °C |
| Dimensions | 2.55" x 1.35" (including connectors) |
| RF Connector | SMA Females |
| DC Input | Via DC Jack 2.5mm or 12" flying lead |
| Weight | 2 Oz |
| Power Supply Options | Regulated 5V DC or unregulated 6~12V DC, includes 6V DC power supply |
| USB Power Option | Optional USB* cable power |
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