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Re: LF: VLF THOUGHT

from [Warren Ziegler] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: VLF THOUGHT
From: Warren Ziegler <[email protected]>
Date: Tue, 31 Aug 2010 16:10:46 -0400
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Andy,

   Yes that is how environmentalists were able to block the Navy's use of high-powered sonar based on the damage it did to whales and dolphins.


-- 
73 Warren K2ORS
                WD2XGJ 
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1



On Tue, Aug 31, 2010 at 3:52 PM, Andy Talbot <[email protected]> wrote:
But think of the animals and birds with their extended hearing range.
On 31 August 2010 19:54, mal hamilton <[email protected]> wrote:
I see 15 Kilowatt audio amplifiers advertised, therefore there must be a speaker system, public address horns available for such amplifiers.
If one of these speaker horns was directed line of sight towards the horizon or a mountain top and a suitable dish positioned at the receive end, it must be possibel to intercept such a signal at audio frequencies. eg Transmit a tone which could be keyed at 9 - 20 Kcs and see what distance could be covered.
Keeping the signal just above the normal human audio range would avoid interference.
or just TX a signal at say 5 Kcs and see how far it could be heard by ear with this sort of power, maybe further than the same signal transmitted by radio means, except one had an exceptionally large antenna
Maybe a NOV is required for this experiment!!!!
de g3kev
 
 
 
  




 
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