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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>I have found 2 huge sources of noise in landcruisers to be the alternator and the oil pressure sender. To prove how much of the noise is oil pressure sender temporarily disconnect the sender. I have knocked down the alternator whine by fitting a MAR-60A in line. If you fit a 47 nF cap across the oil pressure sender it will reduce the noise it makes and will also reduce the oil pressure gauge reading by 10 to 20 % (I can mentally add the reduction).<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Best 73’s<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Nic<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>VK2KXN / VK5ZAT <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>Guys,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>A little OT, but perhaps you know the answer </span><span lang=EN-US style='font-family:Wingdings'>J</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Got my HF setup in the vehicle installed and operational during the week – IC706 (Original Mk1) in a 100 Series Diesel Landcruiser (No Turbo).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>All working great, tunes up on all bands 80m through to 10m with zero noise…… EXCEPT…..<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>When the engine is running I get an awful 1-2kHz squeal in a few spots on 40m (thankfully most of the 7xx0 and 7xx5 freqs are free from this problem and quite usable). The problem is also there on 30m and 20m, the noise takes out 10.147 and 14.116 – two freqs I’d like to be able to access – but by far the worst is on 40m.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I can probably live with it on 30 and 20m (call into the travelers net whilst pulled over for a break, and APRS can get away with degraded Rx), but it’s really annoying when tuning around on 40m whilst mobile.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Anyone with a Diesel Landcruiser 100 had/solved this issue ??<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Geoff VK2XJG<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>