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#1
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![]() "Alun" wrote in message ... Plus, of course, the issue isn't so much the power as the current when thinking of high resistance connections. The cranking current drawn via a car battery terminal is around 100A. If the grease ingress caused a high resistance connection, the car wouldn't start. In practice, ungreased connections tend to 'go high' due to corrosion. It's not normally grease, it's vaseline, which is conductive. I don't know how vaseline behaves at RF, though. Maybe not too well? If it isn't in the the current path (ie between the mating surfaces) and also not acting as an unwanted path (eg between the earth clap and the antenna), does it matter? OK, you may get some local absortion of RF energy, but how much grease are you going to use? Not enough to absorb much RF and the mass of grease (or vaseline) will be far less than other unquantified RF conductors and absorbers in the vicinity. You need to look at things like this in the context of the problem. -- Brian Reay www.g8osn.org.uk www.amateurradiotraining.org.uk FP#898 |
#2
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On Mon, 10 Jan 2005 06:25:05 -0000, "Brian Reay"
wrote: You need to look at things like this in the context of the problem. Brian, I replied to Jack Painter elsewhere (q.v.) in which I quoted your posting as part of my reply. Hope you don't mind. -- from Aero Spike |
#3
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![]() "Spike" wrote in message ... On Mon, 10 Jan 2005 06:25:05 -0000, "Brian Reay" wrote: You need to look at things like this in the context of the problem. Brian, I replied to Jack Painter elsewhere (q.v.) in which I quoted your posting as part of my reply. Hope you don't mind. Not at all, I'll send a bill for my normal fee ;-) -- Brian Reay www.g8osn.org.uk www.amateurradiotraining.org.uk FP#898 |
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