Glossary

Glossary

Three letter codes used as an abbrevation of commonly used statements while communicating on Ham Radio. All these codes were intially used with Morse Code transmission and they with Letter Q.

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LC oscillator to make Morse Code audible.

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  1. HF – High Frequency – 3 – 30MHz 
  2. VHF – Very High Frequency – 30 – 300MHz 
  3. UHF – Ultra High Frequency – 300MHz – 3GHz 
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Best Regards (Abbreviation

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Type of electrical transformer used to connect an unbalanced circuit to a balanced one. 

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Definite identification sequence allotted to Hams by W.P.C wing, Govt of India (Or respective governments of every country). 

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Continuous Wave 

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General call for all stations

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Young Lady (Female operator of any age) 

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Old Man (Male operator of any age) 

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Moon bounce, also known as Earth-Moon-Earth (EME) communication, is a technique that sends radio wave transmissions from Earth to the Moon. The transmission is then reflected, or bounced, off the surface of the Moon and captured by an Earth-based receiver. It is an experimental thing practiced by Radio Amateurs.  

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The Ionosphere is a section of the atmosphere that acts like mirror for the HF waves reflecting them back to Earth’s surface, which makes long distance communication possible. 

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The half wave dipole is the most popular version of the dipole antenna or aerial. As the name implies, the half wave dipole is a half wavelength long. 

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It is a directional antenna consisting of multiple parallel elements. 

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Distress Signal pronounced in voice 

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System to give signal reports. [Readability, Signal Strength, Tone]  

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Distress call sent in Morse

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Standing Wave Ratio Meter 

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Slow Scan TeleVision – picture transmission method used by Hams to transmit and receive static pictures over radio using audio signals. 

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Audio Frequency 

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Radio Frequency

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Intermediate Frequency 

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Amplitude Modulation

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Frequency Modulation

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Phase Modulation

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Automatic Gain Control 

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Automatic Volume Control 

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Signal to Noise Ratio

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Direct Current 

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A non directional antenna in the shape of  “inverted V’ or “drooping doublet”. Used in high-frequency band. 

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