[TowerTalk] Hi-Z Antenna Stuff

[Rik van Riel]

On 02/07/2012 12:04 PM, Wilson Lamb wrote:
> It's disappointing to see hams doing this to each other.
> It's darn hard to see what's patentable in that schematic...tuned circuits,
> diode limiters, and buffer amps, wow, hi tech!!  ALL the math is decades old
> too, so where's the new part??  With decades of phased array use, you'd
> think this basic stuff would be ho hum for everyone!

Apparently the government, at least MITRE, has been
building frequency-independent directional phased
arrays for quite a while now, with voltage probe
antennas, an amp at each antenna and coax delay
lines.

Since the late 1980s or very early 1990s, at least.

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