FOR FULL SPECIFICATIONS AND DETAILS, PLEASE REVIEW THE PRODUCT PAGE AT NOOELEC.COM SAWbird+ 2m is a self-contained LNA module designed for operating within the 2-meter band. It has a very high attenuation outside of its 6MHz passband (142-148MHz), centered around 145MHz, with a nominal gain of 40dB within the passband and a nominal current draw of ~200mA. SAWbird+ 2m contains 2 ultra-low-noise LNAs sandwiched around a custom-designed, high-performance SAW filter centered at the frequency of interest. The SAWbird+ 2m has an EMI shield to isolate the internals from external interference. There are also M3 mounting holes available to mount the PCB in your custom enclosure or project with standard hardware. Each module allows for 3 different power options, but you should only power with one option at any given time! The recommended power input through the SMA output port (for bias-tee capable SDRs like the NESDR SMArTee) is 3V-5V DC. Alternatively, if you don't have a bias-tee capable SDR, you can use the external power options through the microUSB port or the power input header (female 0.1" header). The recommended external power input is 3.3V-5.5V DC. Though there is protection circuitry on SAWbird+ 2m for overvoltage conditions, and voltages of up to 12V DC should still work and will not damage the device, it is not recommended for long-term usage. Kindly note that damage resulting from overvoltage conditions would not be covered under the standard 1 year warranty.