邮票目录 [主题: 无线电 | 设计者: Ali Ali-Khodja | 背胶: 未知] : Colnect 📮
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Algiers-Annaba Radio Relay System
- 国家:
- 阿尔及利亚
- 目录编号:
- Mi:DZ 430, Sn:DZ 331, Yt:DZ 400, Sg:DZ 437
- 主题:
- 无线电 | 通信
- 发行日期：:
- 1964-08-30
- 有效期:
- 1965-02-01
- 大小:
- 40 x 26 毫米
- 颜色:
- 多色的
- 水印:
- 无水印
- 设计师:
- Ali Ali-Khodja
- 印刷厂:
- Paris printing office
- 版式:
- 邮票
- 发行方式:
- 纪念邮票
- 齿孔:
- 梳式 13
- 印刷:
- 雕刻版印刷
- 面值:
- 0.85 د.ج - 阿尔及利亚第纳尔
- 发行数量:
- 1,000,000
- 评分:
- 44% 准确度: 高
- 说明:
- The Algiers-Annaba radio-relay system was a telecommunications system that operated in Algeria. It consisted of a network of radio towers that transmitted signals over a distance of about 600 kilometers, connecting the cities of Algiers and Annaba. The radio-relay system was a significant technological achievement at the time, as it allowed for faster and more reliable communication over long distances than was possible with traditional telegraph or telephone lines. However, the system was eventually replaced by more modern telecommunications technologies, such as fiber optic cables and satellite communications.
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