a Variable Gain UHF Masthead Amplifier 1-25dB Antiference Low Noise Wideband Variable Gain Masthead Amplifier 1-25dB Gain: Variable 1-25dB Signal range: 470-862 MHz DC requirement: 40mA Inputs: 1 Ouputs: 1 Power in: 230 V, 50 Hz, 3A For use: Indoor / Outdoor Connection type: F Connectors Manufacturer: Antiference Part #: UPFR25U Digital Compatible: Yes Analogue Compatible: Yes Singal insertion loss: < 0.5dB Note: always used as a set in conjunction with a Power Unit