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Circuit description around PS and its supply¡­


 

Evening all
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I have a question regarding the operation of the power control around the PA transistors¡­does the DAC drive Q512-5 and therefore Q507 when the unit is in receive, meaning the PA supply is present on Q503-6 all the time?
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My unit¡¯s poorly PA draws excessive current (~2A or so) in receive and the transistors get too warm; I have spares on the way but now I¡¯m wondering about Q507¡­
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Tra all!

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