Sylvania Technical Manual 1949
CQ CQ CQ de W0VLZ: 3S4 x 2 Transmitter (The Plan)
3S4 @ The Valve Museum
CQ CQ CQ de W0VLZ: 3S4 QRP Midget
1PCS - Valve CV484 (3S4) Vacuum tube NOS NIB | eBay
3S4 - GE - TUBE IN OUR STOCK | eBay
3S4 Vacuum Tube RCA 3S4 Power Output Tube | eBay
Preamp tubes
NOS in Box Philco Early 3S4 Tube - Etsy Denmark
Tube NOS #159 Emerson 3S4/ 3Q4/DL92 — Parts Connexion
Valve Circuits 4
3S4 Philco and Raytheon NOS same build 1940's - 1951 (1 Pair) - Tube World Express | Tube, Vacuum tube, Sylvania
looking for 1U4 3S4 Headphone Schematic amp | diyAudio
Tube NOS #160 RCA 3S4/ 3Q4 — Parts Connexion
VACUUM TUBE ~ 3S4 ~ ARCTURUS ~ NOS ~ # 3S4 | eBay
BEZ Q1A-S 3S4 6Z5P OA2 Tube Pre Amplifier (2 Channels)_Pre-Amplifier_Tube Amplifier_Analog Metric - DIY Audio Kit Developer
3S4 Vacuum Tube RCA 3S4 Power Output Tube | eBay
The GAKKEN Vacuum Tube Radio Ver. 2 | Radiomuseum
1pcs - 3S4 Vacuum Tube USA | eBay
3S4 – Tubes R' Us
2 Tung-sol 3S4 Vacuum Tubes Valves Lot of Two - Etsy
3s4 tube products for sale | eBay
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
Borden Radio Company - Radio Kits and Designs for Old and New Styles
Vintage NOS / NIB Raytheon 3S4 VT-174 Vacuum Tube | eBay
