Horstmann Radio Telemeter Series K Manual

For this project I was given the  Horstmann Radio Telemeter Series K Manual  by my mentor, who had constructed it. This tool is designed to measure the frequency of  radio waves  in the presence of interference, noise, or other signals. The result is a curve that can be used to determine your antenna's impedance response to changes in frequency. With this information you can tune your system for maximum performance and assess its performance according to manufacturer specifications. This project will document my learning process for this manual so that it will be available for future use by someone else who may have not learned how to work with it yet. The first step was to fully understand the function of this device. This understanding came from experimenting with different sets of information and inputting them into the Equivalent Circuits Equations sheet. Here's an example Equivalent Circuits Equation for this device: Z = jωL jωC -Z = jωL jωC Z = exp(jΩ) C Z = exp(jΩ) * 10^9 Ω Z = 10m Ω C C= 10^-9 F This equation listed is the equation for calculating impedance when there is no noise or interference present in the system. When K is zero, the Z values are equal to the theoretical values listed above. For this step my mentor provided me with an Equivalent Circuits Equation sheet with the table of values he had calculated for this particular device. I used his equations to decipher my own Equivalent Circuits Equations for this device which I concluded were different than his. Sorry about taking so long here but I had to become comfortable with my new work space and get myself organized before continuing on to the next step. The next step was to build a circuit that would utilize the information from the Equivalent Circuits Equations sheet. I had to make sure that I included all of the components listed in the Equivalent Circuits Equations sheet for this circuit. This project required me to do some research on the standard components for this manual. This project called for the use of  a spark gap (which I had never dealt with before) and  a voltmeter (which is basic). I sourced both of these parts from my mentor who was happy to provide them. While constructing this circuit I encountered some unforeseen challenges. The first challenge was getting my voltmeter to read fast enough because my signal source was so weak. The second challenge involved finding an enclosure that would be suitable for housing all of these sensitive parts and protect them from outside interference or tampering. The only enclosure I came across was an old Radio Shack box that could be used to house just about anything. This project taught me the importance of designing things with containment in mind. It also taught me that you can incorporate many different components into a single circuit making it more complex than it appears at first glance. This project was very educational because it helped me better understand how everything worked together to make devices like these possible. With this understanding I will be able to make my own modifications, design my own circuits, and eventually build equipment myself (hopefully). My work space is currently located in the basement of my home. It was previously occupied by the garage which has since been renovated into a usable space for other projects.

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