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Tek 492 is way off in frequency


 

Good afternoon,

I have a Tek 492 spectrum analyzer that is way off in frequency. A 100 MHz signal shows up at 77 MHz on the display. 1000 MHz is at 908. 2500 MHz shows up at 2291. And so on. Is there a simple way to adjust this, or should I just use a lookup table and deal with it?

Thanks and 73, David W9HQ

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