The technical reference section is to provide amateur radio operatros with a foundational knowledge and information on several principals, which includes the following:
Embedded Files
ANTENNA DESIGNS CALCULATORS - Online Antenna Calculators
BATTERY INFORMATION - Information on batteries and safety information
COMMON KNOTS - Common Knots that should be easy to remember to secure equipment
NETWORKING BASICS - Basic Network looks at what you need to know about networking
STARLINK - For Amateur Radio
TOPO MAPS - Create your own TOPO Maps and print them
TORID PERMEABILITY CALCULATOR - The length to diameter ratio of the core can significantly impact the ability to differentiate between materials. Cores with a low length to diameter ratio have a very low effective permeability (µrod) that is nearly indistinguishable between material grades. A trick to evaluate a rod type core that has a low length to diameter ratio is to take several of them placed end to end and test them as one longer rod. The air gaps between the cores will have a relatively insignificant impact on the effective permeability given that the majority of the magnetic field is not contained within the core. Coverage of a coil over a rod is an important factor as well. Getting a complete coverage of the rod will yield a lower inductance modifier (K) and therefor a higher inductance making distinguishing between different materials easier.
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