Power supply problem (caps or regulators?)
Analyzer only
This is a large and heavy portable piece of equipment.

Base Frequency: 50 KHz Max Frequency: 21 GHz

The 492 Portable Spectrum Analyzer is a high performance, rugged, microprocessor aided instrument of
compact size and offers automatic modes.
Three-knob operation provides use as simple as 1, 2, 3 through microprocessor coupled functions
such as resolution bandwidth, video bandwidth,
sweep time, frequency span, RF attenuation, and reference level
This portable spectrum analyzer covers from 50kHz to 21GHz
(to 220GHz with optional waveguide mixers, sold separately).
Offers fully calibrated amplitude and frequency along with CRT readout of all important parameters
 for operator convenience and quick setups.
Amplitude comparison in 0.25 dB steps. Dynamic range of 80 dB. T
the instrument has a resolution bandwidth of 1MHz to 1kHz in decade steps, plus
an autoposition. Resolution is within 20% of selected bandwidth.

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