Topband: Broadband dipoles

[Pete Smith N4ZR]

And this part:

? Antenna Efficiency
Frequency (MHz) Efficiency (dB)
2 -12.7
3 -8.8
5 -6.4
7.5 -4.8
10 -4.2
20 -2.8
30 -2.1

I'm not sure what a negative antenna efficiency means.  Compared to an 
isotropic source?  It is large, and must spend a lot of power heating 
those resistors.

73, Pete N4ZR
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On 2/26/2013 8:42 AM, Tom Boucher wrote:
> It's the reference to termination resistors in the SPX data sheet that bothers me.
>
> Tom G3OLB
>
> K1FZ wrote:
> <The antenna in a simpler single dipole configuration has the wire ends tied
> with a perimeter wire  to give very wide frequency banding. For a modern
> version of the old T-top see.
> http://www.spx.com/en/tci/pd-613t-and-f-broadband-dipole-antennas/>
>
> _________________
> Topband Reflector
>