the salesman sold our company Antenna Protection Unit with wrong output voltage range. The output was 1 mV per 1 kW and our antenna system has only 4 kW thus, 4 mV. This level is too low for the input of the Telemetry System which requires -10 VDC to +10 VDC. The supplier cannot replace the units (we have 3) hence, are not monitored remotely. The output is linear and i want to design a linear amp with a 30 dB gain. Any help will be highly appreciated.