6197/6CL6 Sylvania, RCA Sharp Cut Off Power Amplifier Pentode Tube. Designed for on/off control applications involving long periods of operation under cutoff conditions. New old stock * No longer available for export.
Low Voltage Tube Amp Design | Telecaster Guitar Forum
5654 tube as power tube - which is the correct OT primary impedance in SE & PP ?
6CL6 GE Power Pentode Vintage Miniature Vacuum Tube 9-Pin NOS New Old Stock in Box
Tube type list
6197, Tube 6197; Röhre 6197 ID6009, Vacuum Pentode | Radiomuseum.org
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Universal loadline calculator for vacuum tubes - Vacuum Tube Amplifiers - DIY
Results page 8, about 'Vacuum tube radio'. Searching circuits at Next.gr
2-tube qrp transmitter
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Datasheet - Geloso 4/104 S - Other
Datasheet - Geloso 4/104 - Other
6CL6 JAN General Electric | TubeDepot.com
