1T4 Datasheet | Pentode
1U5 Datasheet | Diode Pentode Amplifier
Tube type list
Download - Vacuum-Tube-Shop
1U4 | GENERAL ELECTRIC | TUBE At 2 € HT on Electols
Sylvania Technical Manual 1949
1U4, Tube 1U4; Röhre 1U4 ID2627, Vacuum Pentode | Radiomuseum.org
TUNG SOL JTL 1U4 Tube 1952 Test Nos Absolutely Single Transoceanic £7.62 - PicClick UK
Sylvania Technical Manual 1949
Tube type list
Sylvania Technical Manual 1949
WA2ISE sub-mini tube AM radio page
BR24G16FJ-3 Datasheet by Rohm Semiconductor | Digi-Key Electronics
4 diode-pentode composite tube (1U5) radio | Details | Hackaday.io
Tube type list
Characteristics of Sylvania Receiving Tubes
Vacuum Tube - 1U4, Pentode | Antique Electronic Supply
Radio Tube Equivalents | PDF | Vacuum Tube | Pressure
1U4, Tube 1U4; Röhre 1U4 ID2627, Vacuum Pentode | Radiomuseum.org
List of vacuum tubes - Wikipedia
1U5, Tube 1U5; Röhre 1U5 ID2816, Diode-Pentode | Radiomuseum.org
WA2ISE sub-mini tube AM radio page
1U4
1U4, Tube 1U4; Röhre 1U4 ID2627, Vacuum Pentode | Radiomuseum.org
1U4 - Vint'Elec - Vintage electronic tubes
Tube type list
1U4 - Vint'Elec - Vintage electronic tubes
