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Slighty faulty HP141t question
hello...
my old but trusty hp141t (1.2ghz) appears to have developed a fault/out of calibration?? it all works but now there is a spurious reading (peak) about 6.5mhz down from the fundamental peak..about 55db down..its always there when a signal is present (but not of course when no input.) It's defiantly the analyser as I have tried different tx sources and its always present.. sniffing rf via bird 43 attenuator.. Any ideas?? simon g0zen |
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