Marconi 2382 spurious response

My Marconi 2382 spectrum analyzer has a spurious response at 94.8 MHz, which suggests the 1st LO is getting into the 2nd mixer. It's about 20 dB above the noise floor at RBW 1 KHz, independent of input attenuation. Has anyone else seen this problem on a 2382?

The vital statistics are:

1st IF = 502.6 MHz 2nd IF = 47.4 MHz 1st LO = 597.4 MHz (for f = 94.8 MHz) 2nd LO = 550 MHz (fixed)
Reply to
Andrew Holme
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there is a yahoo group for marconi instrument users, maybe they could help.

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Reply to
Jorgen Lund-Nielsen

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