| |
|
Orfordness Beacon (Black Beacon)
|
83150 |
| |
|
Lorenz sugár
|
83152 |
| |
|
Bernhard/Bernhardine
|
83161 |
| |
|
EGON (Erstling-Gemse-Offensiv-Navigationsverfahren)
|
83187 |
| |
|
Lichtenstein radar
|
83192 |
| |
|
FuG 224 Berlin A
|
83194 |
| |
|
low-frequency radio range
|
83266 |
| |
|
Sonne (navigation)
|
83267 |
| |
|
Franco-British plans for intervention in the Winter War
|
83288 |
| |
|
Software Arts
|
83658 |