UHF preamplifier for the 70 cm band_operating from 420 to 450 MHz with integrated VOX circuit, bias tee and on board coaxial relay able to work without any external accessory up to 100W. Input notch filter (ANTI LTE) calibrated at 900MHz. Perfect for sat, contest, trope and eme use. Low noise figure ( typ. 0,80dB on the whole operating range).  Just connect the PRE between radio and antenna.