>I recently picked up a somewhat working Heathkit Warrior, complete with 4
>572B's. Primarily, I picked this thing up to learn about tube-type
>equipment. My plans are to eventually build in T-R switching and proper
>grid bias circuits. Before I do that though, I have encountered a problem
>with the amp and I'd like to run the problem past you experts.
>The issue I'm facing is low plate current. According to the assembly docs,
>the amp should exhibit resting plate current of 90 to 100 ma (after full
>warm-up of the 866A's). Plate voltage is good at 1650 volts. Grid current
>is zero at idle. Resting plate current is only 50 ma.
// First off, I would measure the accuracy of the plate/anode current
- R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.
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