Valve radio aerials in India (Techniek Overig)

door jsbhavsar , Mumbai, India, 21.10.2016, 06:47 (2954 dagen geleden) @ Maarten Bakker

No, this aerial in India never had a product number or anything when I purchased it couple of times(once in childhood and once in 2002). I do not know details about 1968 as I was not born that time. However the Philips dealer had handed over such a thing on purchase of a new band radio in 1968.

It used to come in a small plastic bag with this product along with a paper inside which had a photo of Eagle printed on it.

The copper net aerial is a very fine single copper wire several hundreds of meters long(maybe thousands?), woven into a fine mesh and the whole thing is almost 2 or 3 meters long. It is then suspended between two plastic clamps. Both the plastic clamps have springs on both sides. A lead-in flexible electrical wire is clamped anywhere in the mesh that takes the signal to the aerial socket of the radio.

From the UK radio forums what I understand, this design is of long wire aerial of the inverted L type. The copper mesh or the net acted as a "capacity hat" or "capacitance" required for the high impedance input for the aerial sockets those days.

The older copper net aerials in India were pretty long (3 meters long). I remember in childhood we had difficulty stretching that. The recent one which I purchased in 2002 or so is not that long enough (maybe cost cutting).
It is hard to get these anywhere in India now.

Thanks everyone for sharing the Holland version of the spring aerial. Never seen those kind in India.

In India, what I have seen for small transistor sets in 1980s, a fine flexible wire was wound inside the frame of the transistor radio. I do not know if that was the frame aerial or just a long wire aerial for the tiny transistor set. It was stuck in the inside of the small radio cabinet.