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Antennas
Stasi
  
KAE   32630-66
Ground antenna - wanted item

KAE, also known as Projekt 62630-66 was a ground antenna for HF radio signals, developed around 1985 in the former DDR (East-Germany). The antenna consists of a number of inter­connected wires that can be burried into the ground, whilst still being able to function as an antenna. The antenna is fully invisible for air reconnaissance and was frequently used with Cold War bunkers in the DDR. The KAE was also used with the WSA-1 and WSA-6 spy radio sets.

Radiating element (ribbon cable) (Copyright Detlev Vreisleben)
Radiating element (ribbon cable)
Ground wiring
Splitter
Ribbon cable used as radiator
A
×
A
1 / 5
Radiating element (ribbon cable) (Copyright Detlev Vreisleben)
A
2 / 5
Radiating element (ribbon cable)
A
3 / 5
Ground wiring
A
4 / 5
Splitter
A
5 / 5
Ribbon cable used as radiator
❮ ❯

All photographs by Detlev Vreisleben [1].




Dimensions
FrequencyABCDE
1.5 to 20 MHz23 m15 m11 m5 m1.5 m
3 to 30 MHz23 m9.5 m5.5 m5 m1.5 m
Versions
TypeDrawingLayoutMHzkWm2Application
KAE 13011557.038.100011557.038-000011.5-20115 × 23 mMobile
KAE 13111557.038.100021557.038-000011.5-20115 × 23 mFixed
KAE 13021557.038.100031557.038-000023-3019.5 × 23 mMobile
KAE 13121557.038.100041557.038-000023-3019.5 × 23 mFixed
KAE 14021557.038.100051557.038-000033-3059.5 × 23 mMobile
KAE 14121557.038.100061557.038-000033-3059.5 × 23 mFixed
Specifications
  • Device
    Ground antenna
  • Purpose
    Concealed Cold War communication
  • Name
    KAE
  • Model
    1557.38
  • Project
    32630-66
  • Developer
    ?
  • User
    NVA, HV A (MfS, Stasi)
  • Year
    1983
  • Country
    East-Germany (DDR)
  • Frequency
    see below
  • Area
    see below
  • Polarity
    Horizontal
  • Power
    1000 W (5000 W)
  • Distance
    10 km - 5000 km
  • Setup
    ~ 10 min (2 persons)
  • Temperature
    -40°C to +50°C
  • Storage
    -40°C to +70°C
KAE 1301, KAE 1311
  • Frequency
    1.5-20 MHz
  • Surface area
    15 × 23 m
KAE 1302, KAE 1312, KAE 1402, KAE 1412
  • Frequency
    3-30 MHz
  • Surface area
    9.5 × 23 m
Documentation
  1. Erzeugnisunterlage Boden-Erdantenne KAE, Type 1557.38
    MfS, March 1985. 29 pages. Obtained from StUA. 1
  1. Document obtained from Stasi-Unterlagen-Archiv (StUA) and kindly provided by Detlev Vreisleben [1].
References
  1. Detlev Vreisleben, Documentation and photographs
    Personal communication, May 2025.

  2. Falk (DF3UFW), Nachbau einer Erdantenne
    DARC website. Undated.

  3. User Radist on Hidden Places
    9 January 2024.
Further information
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Crypto Museum. Created: Friday 30 May 2025. Last changed: Saturday, 07 June 2025 - 11:31 CET.
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