1U4

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1.4V @ 0.05A Filament Drive Rail, Sharp-Cutoff Radio-Frequency (RF) Pentode Vacuum Tube [1AD4]. It integrates a close-mesh inner suppressor grid layout designed explicitly to manag e high-gain intermediate frequency (IF) amplification loops while entirely shunting out low-level parasitic inter-electrode capacitance anomalies and tracking non-linearity. Housed in an industry-standard 7-pin miniature glass tube envelope chassis layout. Exact part index: 1U4. Show more