The Portek A734 from GSI is a RF Spectrum Analyzer with Frequency 100 KHz - 4.4 GHz, Real Time Bandwidth 0.1 Hz, 250 KHz, 5 MHz, DANL -134 to -130 dBm/Hz, Amplitude +16 to +19 dBm, Sweep Time 10 to 2000 ms. Tags: Analyzer with Screen. More details for Portek A734 can be seen below.