The Subject is kind of vague but I have a AL-80B. I have no issues on 75-15m.? The 15M Tuned Input is a little?off, maybe they tuned it to 17M.??
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On 10M when starting tune up process and I get to about 50Watts?I smell a hot smell.
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40 Watts of Drive,Grid Current is 85 and Plate Current is 350 Output Power is 490W NO SMELL
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But when I get to 50Watts?I start smelling a HOT, Plastic Smell, the more drive I give it the worst it gets.??@ 50Watts of Drive, Grid Current is 110, Plate is 378 Output is 615W
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Any Ideas where to start looking for this problem???
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Next Problem on 160M
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40Watts?of Drive, Grid Current is 70, Plate is 300 Output power is 430W No Smell
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When I get to 70 Watts of Drive I smell a different?smell, Like a component breaking down.
When I key with 70Watts?of Drive I see 148 of Grid Current that falls to 130 pretty fast.? Plate current holds at 350 with Output power starting at 739 and dropping to 660 pretty fast as well.? It smells almost like your heat does when you turn in on for the first time in the winter but its different?that the 10M smell...
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Any Ideas?? The other bands work perfect...? Not Issue no matter how long I use it.
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Thanks for you help.? Sorry if descriptions are off, any help will be appreciated.
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73
K4MDI
Scott
