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Tektronix 492

Tracking Generator

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This is a tracking generator for the Tektronix 492 based on KE5FX's design. It takes the place of a TR-503 tracking generator but has a different architecture. The design is essentially the same as KE5FX's, but uses attenuator/amplifier pairs instead of isolators and has a different PLL circuit for generating the 110MHz LO. Read more »

USB-492

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Tektronix 492 USB Interface

I have a Tektronix 492 without GPIB. This project adds USB connectivity to the Tek 492. It can download a full sweep in about 200ms. It can't read any configuration from the instrument, so it's not a real replacement for GPIB, but it would be possible to emulate the control code and duplicate the front panel controls on the computer. Read more »

Tektronix 492 First Mixer

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Mixer Diode Failure

Tektronix 492

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I bought a Tek 492 on eBay. This is a 50kHz-18GHz spectrum analyzer which was made by Tektronix in the early 1980's. There were a few major changes which can be distinguished by serial number. I have a mid-model (41000) unit made in 1981. Read more »

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