| Manufacturer | Part Number | Description |
|---|---|---|
| Marconi | ECH81 | Triode - Heptode |
| Marconi | 12AX7 | Double Triode |
| Marconi | ECC85 | DOUBLE TRIODE |
| Marconi | DH719 | Triple Diode Triode |
| Marconi | EABC80 | Triple Diode Triode |
| Marconi | KT66 | Beam Pentode |
| Marconi | A2087 | VHF Noise Generator Diode |
| Marconi | A2134 | Output Pentode |
| Marconi | A214 | Rectifier |
| Marconi | MG5223 | S-Band Magnetron |
| Marconi | A1834 | Double Triode |
| Marconi | X719 | Triode - Heptode |
| Marconi | ACT16 | Triode |
| Marconi | B339 | Double Triode |
| Marconi Electronic Devices | MA818 | 3 Phase / Pulse Width Modulation Waveform Generator |
| Marconi | 22U10LG | ACR22U10LG |
| Marconi | BR161 | Triode |
| Marconi | BR189 | Triode |
| Marconi | ACT14 | Triode |
| Marconi | B309 | Double Triode |