The S1075 Spectrum Analyzer is a general purpose, high reliability instrument designed for making rapid signal strength measurements in the 4 to 1000 MHz frequency range. The unit is completely portable, weighing less than 30 pounds, and can operate off its own internal rechargeable batteries or from an external 12 to 15 volt source, including vehicle 12v battery with a negative ground, A protective bag with a carrying handle for simple field operation in adverse environments is also available. The S1075 displays a 70 dB dynamic range for signal levels as low as +20 dBmV. Relative amplitude measurements can be made in seconds. A manual sweep mode is included for amplitude measurements where integration of modulation is necessary for more accurate readings of signal strength. Measurements within + 2 dB can be made simply, swiftly and reliably. The internal battery is capable of three hours of continuous operation. With care 12 hours intermittent operation between recharges can be easily achieved. Frequency can be easily identified within ±100 kHz using the center frequency digital readout combined with the frequency markers. Amplitude measurements can be made over a 126 dB range utilizing the input attenuation and 70 dB on-screen amplitude calibration.