ve2cjw wrote:
What would be the best combination to cover that frequency range in
receive only? Would a 100 feet dipole with a discone cover it? Any
other suggestions? Thanks.
Mike.


Kind of like asking what is the best combination of qualities in a pet.

Depends on what you mean by "cover" and "best".

If you mean better than no antenna at all, then the dipole would
probably work, although it will be very directional at the higher
frequencies, and depending on the impedances involved, its response will
not be uniform across your target spectrum.

A vhf/uhf discone would be omnidirectional, but you said nothing about
the importance of directionality (in either the vertical or horizontal
planes) or of gain.

You have not mentioned whether any devices might be inserted between the
antenna and the receiver to effect a reasonable impedance match.

Inexpensive scanners often use a single (active) antenna to cover that
kind of range. In which parameters do you seek to improve on simple
scanner antennas? Sensitivity? Bandwidth? Directionality? Local noise
rejection?



Chuck
NT3G


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