>In a message dated 2/20/99 12:04:03 PM Eastern Standard Time,
> Is the 8877 set up this way so that the filament pins are isolated from
> the cathode? Is that why he's able to get away with it? I'm ignorant of
> how the 8877 is set up.
>that is the beauty of 8877, cathode is separate from filaments, no need for
>choke, just have to wait for them glowers to heat up, abt 3 min.
>Note on some chatter about parasitics, impedances, etc. One way to get around
>it is to use monoband design.
? The resonant circuit that supports intermittent vhf parasites is
principally formed by the C-out of the tube, and the total inductance of
the leads between the anode and C-tune. The tank inductance and
bandswitch do not influence the problematic vhf resonance.
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
FAQ on WWW: http://www.contesting.com/ampfaq.html
Administrative requests: amps-REQUEST@contesting.com