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     TeleSAM is a mini-sized radio telescope designed to 
        measure the relative microwave radiation at a wavelength of about 3 cm 
        for any source celestial or nearby. 
        We removed the electronics from a satellite tuning 
        meter and packaged them in a spiffy triangular base with a small 12 volt 
        lead-acid battery as a rechargeable power source. We then mounted an 
        ordinary 
	
	
	
	    satellite dish to the base and connected it to the tuning meter 
        electronics. The result: a tiny-sized radio telescope capable of 
        measuring microwave radiation. 
        Our inspiration for the project came from the National 
        Radio Astronomy Observatory's page called
        Building and Using an 
        Itty Bitty Telescope. We basically followed their instructions but 
        made a more robust device. 
        TeleSAM started out as a effort by IB Design 
        Technology (no longer taught at Southside) students to get the now defunct small sized radio 
        telescope working at 
        Roper Mountain Science Center. When that failed, we looked at other 
        possibilities and decided to build our own unit. 
        The first attempt was crudely constructed and had 
        problems with battery life and intermittent electrical connections. We 
        finally decided to do it right and TeleSAM became an IB Design 
        Technology student's individual project. He brought it to near 
        completion but the SAM Team actually finished it. 
        We currently use TeleSAM in AP Physics E&M class to 
        take relative measurements of blackbody radiation in the microwave part 
        of the EM spectrum. The SAM Team also periodically uses it for the same 
        type of demonstration at Roper Mountain Science Center. We measure the 
        microwave radiation of people as compare to the same type of radiation 
        coming from the Sun. People are often freaked out when they find out 
        they're emitting microwaves.  |