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Hp 8449A microwave low noise preamplifier- excellent


2-22GHz low noise preamplifier
I am a private seller and I have owned this for many years. It has been used sparingly and has really been babied. The second photo shows the input signal I used to test it as well as the noise floor of the analyzer. The third photo is the 8449A output showing the amplified signal, the amplifier noise plus amplified generator noise/KTB noise. The photos show about 33dB gain and a about a 22dB increase in signal-to-noise. Both photos use max hold on the analyzer. There are probably many industrial uses for this, but for me, I used it to drastically increase the signal-to-noise of spectrum analyzer displays. It has no feet, but they can be obtained from many sources.



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