[Amps] 8877 Grid Current

[wosborne44 at gmail.com]

Hi All,

I have an Alpha 9500 with an interesting issue.  The grid current slowly 
falls to near zero (less than 2-3 ma) with constant carrier input and 
constant output over a few minutes. The plate current is constant near 
750ma and the output constant at 1500 watts.  Can this be the tube? The 
meter circuit?

Thanks for your help,

William Osborne--K5ZQ

270-205-9565

Wosborne44 at gmail.com