How to make a 2.4Mhz omino aerial

[Nigel Goodwin]

Great only +24 dB to go to reach the OPs original requirement. At least we're not heading for an omnidirectional antenna with a gain less than 0 dBi

I think we probably are, I suspect a discone has lower gain than a simple vertical dipole - it certainly doesn't have emore.

Basically they are receiving aerials, intended for scanning receiver.

 

[JimB]

Basically they are receiving aerials, intended for scanning receiver.

Not necessarily.
The feature of a discone is its wide bandwidth which makes it suitable a scanner antenna, and so the only ones most people will ever see are used as VHF/UHF receiving antennas.

However, have a look at this big one at a redundant ICBM site in the USA:
n0eq Visits the World's Largest Discone Antenna
Still no gain but wide HF coverage.

JimB