Uputronics Preamp 1090 MHz

Uputronics preamplifiers are compatible with most USB-based SDR receivers, such as RTL USB, Airspy, and Fun Cube. They can be powered either via Bias-Tee (this product is 100% compatible with the Airspy Bias-Tee) or via a standard USB-C cable (not included).

The Bias-Tee input voltage is 5 V.

This unit is a filter with a built-in preamplifier, designed to be installed between an antenna and a Software Defined Radio (SDR) receiver.

The LNA used provides approximately 16 dB of gain at 1090 MHz.
The insertion loss of the filter is approximately 2.3 dB, increasing the overall noise figure of the unit to 0.75 dB.

By combining a SAW bandpass filter with a low-noise amplifier (LNA), unwanted out-of-band signals are suppressed, reducing the risk of intermodulation while providing additional gain for improved receiver sensitivity.

In this design, the LNA is positioned before the SAW filter to reduce the overall noise figure.

High-quality SMA female connectors are used for both the antenna input and radio output. An LED indicator shows when the unit is powered and operating.