>I just replaced all 4 tubes in my Ameritron AL 811H amp...When I turn it
>on, the Plate Current (Ip) goes to 75 mA, and the Grid Current meter
>pins itself fully left (less than 0 mA)...The HV is OK at 1800 volts...I
>think I put everything back together the way it was before I took out
>the old tubes...
>
>Anyone know what gives here?
New tubes often have more gain than old tubes. More gain is good if one
is trying to build an oscillator. To make it oscillate better, remove
the VHF suppressors. Does it have Rauchian "neutralization"?
cheers, Scott
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
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