5 Vintage United 6687/E91H Logic Switching Heptode Tube - BangyBang Tubes | Reverb
Pentagrid converter - Wikiwand
12A8GT / CV910 - Vint'Elec - Vintage electronic tubes
ECH81 TUNGSRAM TRIODE-HEPTODE VACUUM TUBE = 6AJ8 6I1P X719 6C12 CV2128 6U1 | eBay
UCH21 Triode-Heptode, mesh. A vintage vacuum radio tube by Telam #7560 | M-Ware
ECH83 triode heptode, mesh grid. A triotron tube ID19664: Amazon.de: Electronics & Photo
6BE6 - EK90 | MULLARD | HEPTODE TUBE At 10 € HT on Electols
ECH81/6AJ8 TUNGSRAM TRIODE-HEPTODE RADIO TUBE NEW in ORIGINAL BOX / QTY-1 | eBay
12FX8A Triode-Heptode Tube. Designed to operate in a superheterodyne receiver as a triode RF amplifier and frequency converter. MFR: Tung Sol, Raytheon, GE. SKU: 12FX8. New old stock. No longer available for
ECH21 Triode-Heptode, mesh. A vacuum radio tube by Valvo #20989 | M-Ware
6i1P ~ ECH81 6AJ8 6I1P-EV TRIODE-HEPTODE Radio Tube USSR Soviet NEW | eBay
12BE6 / HK90 - Vint'Elec - Vintage electronic tubes
E 91H, Tube E91H; Röhre E 91H ID19296, HEPTODE | Radiomuseum.org
Datei:Heptode-Symbol de.svg – Wikipedia
6I1P-EV / ECH81 / 6AJ8 Russian Triode-Heptode TUBE NEW/OTK/RHOMBUS Lot of 2pcs. | eBay
Triode-Heptode PCH200/9 V9 RSD Tube ID5529: Amazon.de: Electronics & Photo
1L6 / 1U6 heptode tube
ECH21 Triode-Heptode, mesh. A vintage vacuum radio tube from Telefunkenby Mullard, U.K. #20530 | M-Ware
Tubes-Store.com → Other tubes → 6I4P triode-heptode tube
2 Vintage Heintz & Kaufman 6687/E91H Logic Switching Heptode Tube - BangyBang Tubes | Reverb
7S7 triode + heptode for preamp? - 18Watt.com
2G21 / CK555AX JAN Raytheon Subminiature Triode Heptode Converter Tube. Laboratorio Musicale
ElectronTubeStore.com
EH90 Heptode. A vacuum radio tube by Telefunken, Germany #18691 | M-Ware
EK 90 = 6 BE 6 Vacuum tube Heptode 100 V 2.8 mA Number of pins (num): 7 Base: B7G Content 1 pc(s) | Conrad.com
6L7 Heptode Tube. Mixer tube designed for service with a separate oscillator as the first detector in superheterodyne receivers. MFR: RCA. SKU:6L7. New old stock. No longer available for export.
6BE6 | GRAMMONT RADIO-FOTOS | HEPTODE TUBE At 4,50 € HT on Electols
ElectronTubeStore.com
