The clue is surely in the grid current reading. It should be zero with no drive.
73, Alek VK6APK.
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On 2/12/2023 5:49 am, Adrian Fewster wrote:
I had asked for that. what is the same result for each tube on its own with the other removed ?
Also voltage across zener keyed and unkeyed ?
73
vk4tux
On 2/12/23 06:47, John Roland wrote:
Someone asked about idling current.? With no drive but the amp keyed I'm seeing about 80 ma? plate current and about 30 ma grid current.? Both meters drop to 0 when unkeyed.
