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    Telemetry Receivers and Consumer Receivers

    2010 - 03.03

    Our group began looking into using consumer grade radio scanners (receivers). They are a lot cheaper then the current telemetry specific receivers. There are pro’s and con’s to each type of receiver. The consumer receivers are cheaper and can be purchased at any electronic store. They offer a lot of features, such as communication with a computer and GPS integration.

    The tradeoff of the consumer radio scanner is they do not have a high sensitivity for picking up faint radio signals. The specific animal tracking scanners (telemetry receiver) can receive the faintest of transmitter beeps. Having a sensitive radio allows the user to hear a signal from a weak transmitting transmitter. The sensitivity of a consumer radio scanner is around 0.4 microvolts. A telemetry receiver has a sensitivity around 0.007 microvolts.

    We tested the consumer radio scanner and a the telemetry receiver to see if there is a noticeably difference in sensitivity. We put both receivers next to each other and had a transmitter collar laying across both antennas. The collar had a very weak signal due to a low battery. The telemetry receiver was able to receive the pulse from the collar while the consumer receiver just heard static noise. The test didn’t have to go any further. It was clear that the consumer receivers would receive the transmitter collar’s signal when battery is fully charged, but overtime the consumer receiver could not detect the faint signal of the radio collar.

    Telemetry Radio Tests from Russell de la Torre on Vimeo.

    Research in Tracking Animals

    2010 - 03.03

    Animal Tracking Whitepaper – Princeton University

    Tiny transmitter tracking Bee’s


    Week 4 – Open Questions

    2010 - 02.23

    I was looking into energy densities.  http://en.wikipedia.org/wiki/Energy_density

    I wanted to know if it would be possible to use other elements as a power source.  I looking into using hydrogen peroxide or a alcohol such as methane, or ethanol.  These alternative fuels have a denser energy mass then does the best battery technology.  The one thing these alternative fuels will need is a motor generator to turn the fuel into electricity.

    Week 3 – Tech Research

    2010 - 02.10

    One of the open questions we talked about in class was a way to remotely monitor the monkeys.  One of the solutions that I thought would work is establishing radio antenna stations throughout the observation area.  These antenna stations could sense when a tagged monkey enters it’s range and either log or relay that information back to base camp.

    Having the antenna stations logging when they detect the tagged monkey would be the simplest form of passive tracking the monkeys.   The data logged can then be used to triangulate the location of the tagged monkeys.

    Researching radio waves spectrum

    Discusses how a radio wave behaves

    Radio Tower Handovers