915 MHz Filter/Preamp with TX BYPASS


This preamp IS suitable for helium cryptomining (it has a TX Bypass)


Uputronics filtered preamps for improved reception on 915Mhz WITH TX BYPASS.


This unit is a filtered preamp designed to go between a radio transceiver and an antenna which gives excellent performance gains for reception and bypasses the preamplification circuit when a transmission is detected.


Power is either via bias tee or a USB-C cable (Not Supplied – See related items for a suitable USB Type A to C Cable). Bias-tee voltage input is 5V.


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. These particular models are tuned for use with frequencies centred on 915MHz (893MHz-935MHz). The LNA provides around 15dB of gain at 915MHz.


SMA female connectors are fitted for antenna input and radio output, a blue power indicator is provided which switches to red to indicate the unit is bypass mode. The external power connector is a USB-C.


Max TX power +15dBm (30mW)
TX detection threshold -5dBm (+/-2dBm)


Data Sheet Here : https://store.uputronics.com/files/FPA-TXB-V6.03.pdf


Mechanical diagram:

SKU: UPU-FP915sb Categories: , Tags: , , , , , , , , , , , ,
  • Additional information
  • Reviews (1)
  • Warranty Info

Additional information

Weight 3.9 oz

1 review for 915 MHz Filter/Preamp with TX BYPASS

  1. 5 out of 5

    (verified owner)

    It’s working good, I can now see much better signal stats on my witnesses. I am going to try it on a better antenna soon. I would recommend this preamp for Helium miners.

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Airspy Warranty

Airspy warranty is limited to 1 year from the date of delivery for purchased units that fail under normal operating conditions. Airspy units will be repaired at a price of $50.00 plus $10.00 shipping/handling. Normal operating conditions do not include excessive mechanical stresses due to mishandling, dropping, or bending; mechanical or electrical modifications; Electro-Static Discharge (ESD); excessive RF signals; excessive thermal stresses due to improper ventilation or cooling, submersion in any fluid; and any unauthorized repairs.
All warranty claims will be determined by Airspy or their representatives.

Accessory Warranty (except Filter/preamp)

Accessory warranty (except Filter/Preamp) is limited to 90 days from the date of delivery for accessories that fail under normal operating conditions. The warranty is limited to electrical failiure. Physical damage is specifically excluded unless such damage arises from normal use. Antennas are generally considered ‘disposable items’, although very limited warranties may be honored. All warranty cases will be determined by Airspy.US for these items. Contact us for any warranty claims.

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