Below there are pasted some messages from the topic
on Underground Antennas from the ham- radio forum on CQHAM.RU.
Time of the message is DD/MM/YY/HH/MinMin.
Hi my friends. Again we return to the Underground
Antennas. I believe it is very interesting thematic for the radio
amateur. Lots Underground antennas are history for the radio communication.
Lots of them still in the military service…
Andrey 1967 (RA6AMP)
I was involved in construction of an Underground
Antenna in 1985. It was at Saratov Region, RVSN division (Reference 1).
There were two trenches in two meter depth and 150-
meter length. The trenches were located at 90 degree each other.
Cable in diameter 80- 100-mm was placed into the trench in sharp
of a snake. Above the cable there were sand and small gravel…
Figure 1: Shevron RVSN
Quote from Reference (“Crimea in the WWII 1941- 1945 years. Compendium
of the documents and materials”. – Publishing House “Tavpiya”,
Simferopol, 1973 (Reference 2) about the famous 30- artillery division
“30- artillery division
was blocked by German troops at
June- 17, 1942. Telephone communication with the division
was absent from June -15 when mobile group of German soldiers,
that entered inside soviet defense line near Perovskiy
sovhoz, destroyed air and underground
telephone cable. Radio communication was break off on 16- June
when there were destroyed all on- ground antennas. The attempt
to establish communication with help of underground antenna was unsuccessful”.
Figure 2 Shevron RVSN Saratov Region