Valve radio aerials in India (Techniek Overig)

door John Hupse † , Schoonhoven, 21.10.2016, 10:13 (2954 dagen geleden) @ jsbhavsar
Bewerkt door John Hupse †, 21.10.2016, 10:34

Was the long spiral spring tapped in the centre to carry signal to the aerial socket? Or was it end-fed?

The connection wire to the radio set was connected to one of the ends of the spring antenna (end-fed, as the ham says). This antenna was meant for use with any broadcast band, especially for the AM-bands (LW, MW or SW).

It was typically horizontally mounted on an indoor wall. People used two iron nails for this. Very handy, as there was no need to measure the distance between the two nails, it would always fit nicely because of the spring. Most important, this antenna is cheap and does not require professional help.

Listeners in Belgium used more sophisticated indoor antenna systems, e.g. small tuned loop antennas with or without a built-in electronic amplifier. It seems that cultural differences are playing an important role here.

The performance of the Belgium solution is far better compared to the Dutch solution. This has nothing to do with the area size of both countries, as this size is comparable.

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