| Tesla - 621 A (Opera) |
| Produced | Tesla (Czechoslovakia) |
| Year of manufacture | 1955 |
| Frequency range | Broadcast (524,4-1622 kHz), Short Wave (5,8-18,2 mHz), Long Wave (150-300 kHz). |
| Set of tubes | 6Z31, 6Z31, ECH21, 6F31, 6BC32, 6BCC31, 6L31, 6L31, EM11 |
| Dimensions | 52 x 66 x 20 cm |
| Weight | 20 kg |
| Serial number | 619706 |
| Condition |  |
| Remarks | Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) 5 W / Ø 27 cm = 10.6 inch! |
| Fragments |
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