ANTENTOP- 01- 2012, # 016

Underground Antennas

4L1FL

17.08.2012 22:39

There is a sketch of the antenna Astra shown in Figure 10. Antenna made of from 75 and 50- Ohm Coaxial Cable RK75-4-11 and RK50-4-11. Antenna radiator made of 75-Ohm Coaxial Cable. Collecting line made of 50- Ohm Coaxial Cable. Antenna radiators have non constant length. The length is maximum near the collecting line then gradually decreased to the ends. I do not remember exactly the length now. It was a long time ago at 1968... Feeder from the antenna was going to a four- wire line. The line was going to the communication center. I believe that is a logo periodical antenna with 8- 10- dB gain.

Figure 10 Antenna Astra. Sketch

Google Map view on the demolished underground antenna. It was cable antenna buried up to 50- cm underground.

Coordinates: 53 degree 53' 58" N 35 degree 52'37"E

Nearby cities: Kaluga, Orel, Tula

Left:

Former Start Position for SS-8 (Sasin)

Right:

Cross- Underground Antenna

Dismantled UR- 100NU (SS-19) ICBM Control Site

About the Picture See: Reference 6

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