![Old tube diode displayed in Museum fur Kommunikation Communication museum Mitte quarter Berlin Germany Stock Photo - Alamy Old tube diode displayed in Museum fur Kommunikation Communication museum Mitte quarter Berlin Germany Stock Photo - Alamy](https://c8.alamy.com/comp/B22NGT/old-tube-diode-displayed-in-museum-fur-kommunikation-communication-B22NGT.jpg)
Old tube diode displayed in Museum fur Kommunikation Communication museum Mitte quarter Berlin Germany Stock Photo - Alamy
![Can any of you help me identify and spec' these old diodes? The 1N198 is an easy ID, but specs are scarce. Gold leaded diodes are labeled F4 and F8, and both Can any of you help me identify and spec' these old diodes? The 1N198 is an easy ID, but specs are scarce. Gold leaded diodes are labeled F4 and F8, and both](https://preview.redd.it/can-any-of-you-help-me-identify-and-spec-these-old-diodes-v0-1e0cufovyxaa1.jpg?auto=webp&s=82cf58ce0ba531d6b7506081ab8b8453693d2843)
Can any of you help me identify and spec' these old diodes? The 1N198 is an easy ID, but specs are scarce. Gold leaded diodes are labeled F4 and F8, and both
![Amazon.com: PHONME 100pcs Original Speed Switching diode 1S2074 DO-35 Electronic Parts : Industrial & Scientific Amazon.com: PHONME 100pcs Original Speed Switching diode 1S2074 DO-35 Electronic Parts : Industrial & Scientific](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/41IXrHl+cJL.jpg)
Amazon.com: PHONME 100pcs Original Speed Switching diode 1S2074 DO-35 Electronic Parts : Industrial & Scientific
![Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy](https://c8.alamy.com/comp/EHXBNP/old-vacuum-tube-az1-dual-diode-rectifier-used-in-the-power-supply-EHXBNP.jpg)
Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy
![Old Diode Lamps of Different Sizes on a Table, Closeup. Several Different Vacuum Tubes for Old Radio and TV Stock Image - Image of lamp, tube: 270028671 Old Diode Lamps of Different Sizes on a Table, Closeup. Several Different Vacuum Tubes for Old Radio and TV Stock Image - Image of lamp, tube: 270028671](https://thumbs.dreamstime.com/z/old-diode-lamps-different-sizes-table-close-up-several-vacuum-tubes-radio-tv-closeup-270028671.jpg)