Posted on 03/15/2012 4:40:42 PM PDT by Las Vegas Dave
These antennas are mostly parabolic sections with offset feeds (the focal point is not directly in front of the antenna so aperture blockage is nil - good thing). Typical circular reflectors and feed designs are nominally 10% bandwidth (10% of the nominal design frequency).
Hence, roughly, if you double the frequency, the operating bandwidth doubles. Additionally, if the aperture size stays the same, the gain increases when the frequency is increased...so - more bandwidth, more gain (there are other losses that counteract some of the gain increase). There will also be a narrower beamwidth which means more difficult to align. I find it curious that businessmen in charge of billion dollar plus enterprises don't even understand what makes them tick...if I owned the company, their buts would be in a class somewhere.
Good point. With a tall enough tower I could just plug a cable directly into the satellite ... ;-)
Actually the dish would probably have to be smaller. Keeping it the same size as the current dishes would raise the gain and make pointing the dish more difficult. But that’s a trade off. More gain is always better.
I am told that my electric supplier, TXU Luminate, has BOP on now, but only to read our rural meters and probably to “turn you off or brown” via the “Smart Meter” they and nobama are trying to sell us.
>> I am told that my electric supplier, TXU Luminate, has BOP on now, but only to read our rural meters and probably to “turn you off or brown” <<
If that’s all they’re doing, then I’d say it’s “narrowband” rather than broadband. And they’re probably down in the LW frequencies, which for many years the power companies have used for telemetry. In other words, nothing new.
(In fact, it’s probably been opposition from the power companies that has prevented LW broadcasting in the USA.)
BUMP
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