Valve radio aerials in India (Techniek Overig)

door Maarten Bakker , Haarlem / Delft, 20.10.2016, 19:08 (2955 dagen geleden) @ jsbhavsar

This may be an Indian invention or something especially for export, as I have never seen one in the Netherlands.

Does it have a type number (or more likely several different type numbers throug the years)?