The discone would be better for local amateur VHF communication and
listening to the aviation band. The quadrifilar helix would be better
for receiving the weather satellite. If you can only have one antenna,
you have to choose which applications you're willing to accept reduced
performance with.

Roy Lewallen, W7EL

Thierry wrote:

This is to receive WX APT signal on 137 Mhz and sometimes to work on VHF or
listen to avi band.
According you 'd it be interested or not at all to select a discone instead
of the helix ?
There is no advantage of using a discone, or even drawbacks vs. the helix,
excepted the price ?

Thierry