Do you mean ..."can penetrate walls thicker than the average wall."? From what I know, most of the electromagnetic "light" wave within the safe range don`t penetrate lots obstacles. Transmition to a point behind an/a object/structure that is not in a line of sight, is done by certain principals like bypassing as through satellite, reflection, or relaying , using waves with large wave length for smaller obstacles.But if the buildings have less windows /tight without glasses/glasses in wrong angle with reference to wave direction.Chances are you have to rethink of doing internal retransmission. A good thing is most walk talks aren't directional but radial.Waves are transmitted in all directions and chances are some wave might bounce on obstacles to find indirect ways in or out.If site has a complex structure you better task the supplier to do a survey, plan, supply and implement. Redards. N .P.Mmasi Kinpro Computers. Message: 3

Date: Thu, 16 Aug 2012 11:54:35 +0300 From: Memusi <tonatech@gmail.com> To: Skunkworks Mailing List <skunkworks@lists.my.co.ke> Subject: Re: [Skunkworks] Portable Radios - 'Walkie TALKIE' Message-ID: <CAMeeEFOzXV3AtUW29-C20MCchDGm4BzfbybUdh+j6zCNW== 66g@mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1"

Try Qchat technology by qualccom.talk to safcom

On Tue, Aug 14, 2012 at 10:21 AM, Frank Kiprono <fkipronoh@gmail.com> wrote:

...

Guys,

I'm looking to implement a radio communication system in a complex with dispersed buildings, small hills here and there, basements(two floors down) etc

i need a system whose handsets can cover approx 10KM,can penetrate walls thicker than the average wall, with the possibility of installing one or two repeaters etc

kindly advise and/or contact me

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-- Regards

Memusi

Communication is vital in this century....