SB200

[Garey Barrell]

Is the PTT relay in the amplifier closing?

73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual
<http://hr99.home.mindspring.com/R-4C_Servicez/>



John Q. Doe wrote:

>I have an SB200 amp.  The plate voltage shows 2400v.  The idling current
>(plate) is supposed to be about 90Ma. but is zero.  Is this an indication
>of bad tubes???
>
>cdonh at wirelessfrontier.net
>
>  
>

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