ww2 detectors use batteries not redaly available today 90volt -115 volt and large 1.5 volt dry cells. This and advancements in technology make the old detectors wall hangers. U S mine detectors in like new condition in original box with spare crystals go for 200-300 dollars.
http://hobby.us.whiteselectronics.com/ This is the best detector on the U.S. market
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The range of resistor value typically used in water level detectors is between 1k ohm to 100k ohm. The specific resistor value depends on the sensitivity required for detecting the water level change. It's important to choose the resistor value that provides a balance between sensitivity and stability in the detector circuit.
The question is not specific enough. I think you mean in a simple crystal radio, using a diode detector. The small value capacitance after the detector, takes any stray RF frequency down to earth, before being passed onto the headphones, where it would otherwise swamp the headphone coils.
The ohmic value of a two-wire RTD (Resistance Temperature Detector) typically ranges from 100 ohms to 1000 ohms at 0°C. This value increases with temperature due to the positive temperature coefficient of the RTD material.
While I've never heard of such (most Army blankets have only US or US with the caduceus stencilled in the center, this does not mean it doesn't exist, although I doubt the other image is a landmine. Your best course of action would be to take it to the currator of your local history museum, or to the largest Army surplus store in your area and ask a flesh and blood person. These two places will have more resources to check.
Well, isn't that a happy little question! The value of a CMC Detectron 711 metal detector can vary depending on its condition, age, and any additional features it may have. I recommend checking online marketplaces or reaching out to experts in metal detecting to get a better idea of its worth. Remember, the true value of any tool is in the joy and adventure it brings to your life.
What is the value of a world war 1 trunk
An absorbance value exceeding 1 can indicate that the sample is too concentrated, leading to inaccuracies in the measurement due to light scattering or saturation of the detector. To ensure accurate readings and avoid errors, it is recommended to dilute the sample to bring the absorbance within the linear range of the detector.
Yes, a smoke detector is considered an asset as it contributes to the safety and security of a property by detecting smoke and potential fires. It helps protect lives and property, making it a valuable component of any building's safety system. Additionally, having functioning smoke detectors can potentially lower insurance premiums, adding to their value as an asset.
Having a metal detector can be very profitable depending upon how much luck and knowledge of areas you have. If you are lucky enough to uncover an ancient relic such as an old helmet or coins then this can be very profitable. A knowledge of areas is a good idea as you will know where to luck for ancient artifacts. For example if you knew that a viking battle happened in a certain place then you could go that area and search with your metal detector there. This will give you a higher chance of finding something that is worth a high value.
what is the value of a world war II pocket knife