Uputronics filtered preamps for improved ADS-B Reception
This is a SAW based units which is cost effective and gives excellent performance gains.
All our preamps are compatible with most USB SDR Dongles such as the RTL USB, Airspy, Fun Cube. You can power them from either bias tee (This item is 100% compatible with the Airspy bias-tee) or a simple USB Mini B cable (Not Supplied - See related items for a suitable USB Type A to Mini B Cable).
A regulator is fitted as standard which means the bias-tee voltage input range is 5V to 26V. USB input is 5V.
This unit is a small filter and preamp designed to go between a software defined radio receiver and an antenna. Using a SAW bandpass filter and a low noise amplifier (LNA), it stops out of band intermodulation while providing additional gain for increased sensitivity. The LNA is before the SAW filter in this design to reduce the noise factor of the unit. This particular model is tuned for use with ADS-B frequencies (1090MHz).
The LNA used is a MiniCircuits PSA4-5043+ which provides about 16dB of gain @ 1090MHz.
The insertion loss of this filter is approximately 2.3dB, which does increase the overall noise figure of the unit to 0.75dB.
Since March 2020 we have fitted improved SMA female connectors for antenna input and radio output to address the issue of the SMA barrels coming away. Also the Bias Tee regulator kit is now fitted as standard. At this time a ceramic filtered version of this unit is no longer available.
Datasheet here :
1090MHz ADS-B SAW Filter & Preamp For Dongles Datasheet (Outdated needs revising for Match 2020 design)
1090MHz ADS-B Filtered Preamp
- Brand: Uputronics
- Product Code: HAB-FPA1090SAW
- Availability: 974
- Ex Tax: £35.99