6SC7, Tube 6SC7; Röhre 6SC7 ID2985, Double Triode | Radiomuseum.org
Download - Vacuum-Tube-Shop
Pentode PI - Music Electronics Forum
6AC7 @ The Valve Museum
6AC7 @ The Valve Museum
GSTube.com''. Tubes, sockets etc. Parameters and characteristics 6J4
4pcs 6J4 Vacuum tube (~6AC7 ~6AJ7 ~1649 ~1682 ~6134 ~6AB7) Metal Base NOS VALVE | eBay
TDSL Tube data [6AC7]
AmplitudeModulation
Sylvania Technical Manual 1949
ElectronTubeStore.com
Improving your receiver with a frame-grid R.F. pentode
6AC7 Datasheet, Pentode.
4pcs 6J4 Vacuum tube (~6AC7 ~6AJ7 ~1649 ~1682 ~6134 ~6AB7) Metal Base NOS VALVE | eBay
Equivalence table
Sylvania Technical Manual 1943
JJ Electronic - 6CA7
6AC7, Tube 6AC7; Röhre 6AC7 ID2684, Vacuum Pentode | Radiomuseum.org
2pcs 6J4 Vacuum tube (~6AC7 ~6AJ7 ~1649 ~1682 ~6134 ~6AB7) Metal Base NOS VALVE | eBay
Sylvania Technical Manual 1949
Cookiebox - or how and why someone builds a small tube amplifier
1852, Tube 1852; Röhre 1852 ID2960, Vacuum Pentode | Radiomuseum.org
6AC7, Tube 6AC7; Röhre 6AC7 ID2684, Vacuum Pentode | Radiomuseum.org
