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The discone antenna is ________

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The discone antenna is ________

(a) useful direction-finding antenna

(b) used as a radar receiving antenna

(c) circularly polarized

(d) useful as VHF and UHF receiving antenna

I have been asked this question in class test.

The doubt is from Noise for DSB-SC topic in portion Noise of Analog Communications

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Right option is (d) useful as VHF and UHF receiving antenna

For explanation I would say: A discone antenna is almost same as a biconical antenna in which one of the cones is replaced by a disc. It is mounted vertically, with the disc at top and cone beneath. It is useful as UHF and VHF receiving antenna.

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