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Radio - Union RU 3 / W
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| lateral view | scale | rear panel |
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| part of rear panel |
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chassis |
left side |
right side |
| Manufacturer | Radio - Union Braun Radio FFM | |
| Type | RU 3 / W | |
| Circuitry | direct receiver | |
| Circuits | 1 | |
| Tubes | AF 7, AL 4, AZ 1 | |
| Ranges | 200 - 600m, 850 - 2000m ( 220 - 660 yd, 940 - 2200 yd) | |
| Speaker | dynamic | |
| Output for 2. speaker | high resistance | |
| Power consumption | ca. 45 W at 220 V | |
| Voltages | 110 / 125 / 220 / 250 V | |
| Fuse | 0,5 A at 220 V | |
| Dial lamp | 4 V, 0,6 A | |
| Scale | linear | |
| Sound control | continuous | |
| Volume control | high frequency by feedback | |
| Wave trap | connectable | |
| Aerial tuning unit | switchable | |
| Cabinet | plastic black | |
| Weight | 9,25 kg ( 20,4 lb) | |
| Dimensions | 490 x 260 x 240 mm ( 19,6 x 10,4 x 9,6" ) | |
| Prices when introduced | ||
| Radio without tubes | 112,50 Reichsmark | |
| Tubes | 25,00 Reichsmark | |
| Wave trap | 5,00 Reichsmark | |
| Introduced | 1937/38 |
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