Valve Circuits B1
Tube NOS #160 RCA 3S4/ 3Q4 — Parts Connexion
VALVOLA/TUBO DI USCITA audio batteria pentodo DL92/3S4 di Cossor (nuova in scatola) EUR 11,30 - PicClick IT
Tung Sol 3S4
A.M. radio transmitter driven by a 1S4 vacuum tube, one AA battery, and three 9-volt batteries. : r/electronics
3S4 - GE - TUBE IN OUR STOCK | eBay
VALVOLA/TUBO DI USCITA audio batteria pentodo DL92/3S4 di Cossor (nuova in scatola) EUR 11,30 - PicClick IT
RCA JAN 3S4 vacuum tube new old stock original box - Etsy Italia
Tube NOS #159 Emerson 3S4/ 3Q4/DL92 — Parts Connexion
Preamp tubes
Audiobits HIFI Distributor: 3S4 Direct Heated Tube Preamp
DL92 Telefunken 3S4 CV820 | TUBES.RS | Tube Amplifiers & NOS Tubes
1949 Portables | OneTubeRadio.com
3s4 / dl92 tube 3s4, dl92, jan-chs-3s4, vt-174 tube | elliott electronic supply
3S4 Philco and Raytheon NOS same build 1940's - 1951 (1 Pair) - Tube World Express | Tube, Vacuum tube, Sylvania
3S4 DL92 CV820 Mullard Nos Valve Tube £5.00 - PicClick UK
3S4 Vacuum Tube RCA 3S4 Power Output Tube | eBay
3S4 RCA NOS 1950's (98/60)
3S4 Power Amplifier Pentode Tube. Designed for operation in low power scenarios such as in compact mobile equipment. MFR: GE, RCA, Raytheon, Sylvania. SKU: 3S4. New old stock. No longer available for
CQ CQ CQ de W0VLZ: 3S4 QRP Midget
3S4 - Vint'Elec - Vintage electronic tubes
3S4 Power Amplifier Pentode Tube. Designed for operation in low power scenarios such as in compact mobile equipment. MFR: GE, RCA, Raytheon, Sylvania. SKU: 3S4. New old stock. No longer available for export.
Battery Powered Tube Regenerative Receiver
CQ CQ CQ de W0VLZ: 3S4 x 2 Transmitter (The Plan)
3S4 Vacuum Tube RCA 3S4 Power Output Tube | eBay
Antique Radio Forums • View topic - Can a 3S4 be used for a 1S4?
