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PostPosted: Sat Oct 27, 2012 5:07 pm 
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Joined: Thu Aug 30, 2012 10:50 am
Posts: 4
I am working my way through the board and have the receiver working. I have now made the mods for the Off-Board PA. So I am now trying to verify the operation of Q10 and don't find any voltage on the drain. I cannot find any other reference on the schematic for 13V_DR (except the one near J13), and I can't trace the connection on the PCB layout skeleton beyond a few components next to T4-Pin 1. Where does the drain of Q10 get its voltage?

Bernie
W4BGH


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PostPosted: Sat Oct 27, 2012 6:58 pm 
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Joined: Mon Jul 23, 2012 6:25 am
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It comes from J13 on the PCB and alows for connection over to J4 The idea here was to provide a convenient place to measure the driver drain current.

Jim.


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PostPosted: Sat Oct 27, 2012 9:35 pm 
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Do you really mean J4? J4 is the audio output to the speaker.

Bernie
W4BGH


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PostPosted: Sun Oct 28, 2012 11:39 pm 
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Joined: Mon Jul 23, 2012 6:25 am
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Oops you're right it's J14.


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