hambasics:sections:intro
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| hambasics:sections:intro [2026/04/01 19:41] – [Important Notes] va7fi | hambasics:sections:intro [2026/07/10 09:35] (current) – [Certificate Qualifications Overview] va7fi | ||
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| <WRAP round tip center box 80%> | <WRAP round tip center box 80%> | ||
| - | At this point, you should start thinking about the relationship between MHz, kHz, and Hz. We'll add more to the list below. | + | At this point, you should start thinking about the relationship between MHz, kHz, and Hz. |
| </ | </ | ||
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| * Between 790 THz and 30 PHz (30,000 THz) you'd create UV rays, which are invisible but could blind you. | * Between 790 THz and 30 PHz (30,000 THz) you'd create UV rays, which are invisible but could blind you. | ||
| * Between 30 PHz and 30 EHz (30,000 PHz) you'd create X-rays, which we could be used to take pictures of your bones. | * Between 30 PHz and 30 EHz (30,000 PHz) you'd create X-rays, which we could be used to take pictures of your bones. | ||
| - | * And passed | + | * And beyond |
| ===== Electromagnetic Spectrum ===== | ===== Electromagnetic Spectrum ===== | ||
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| This is important because different modes have different bandwidth requirements. | This is important because different modes have different bandwidth requirements. | ||
| - | + | <WRAP group> | |
| - | {{ scope01.png}} | + | < |
| - | < | + | |
| |< 300px >| | |< 300px >| | ||
| ^Mode ^Required Bandwidth | | ^Mode ^Required Bandwidth | | ||
| Line 115: | Line 114: | ||
| |FM Voice |20 kHz | | |FM Voice |20 kHz | | ||
| |Fast Scan TV |6 MHz | | |Fast Scan TV |6 MHz | | ||
| - | </ | ||
| + | </ | ||
| + | <WRAP half column> | ||
| + | {{scope01.png}} | ||
| We'll look at that picture in more details soon, but for now, let's just point out how the AM signal is twice as wide as the SSB signal. | We'll look at that picture in more details soon, but for now, let's just point out how the AM signal is twice as wide as the SSB signal. | ||
| + | </ | ||
| + | </ | ||
| ===== Certificate Qualifications Overview ===== | ===== Certificate Qualifications Overview ===== | ||
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| <WRAP indent> | <WRAP indent> | ||
| ^Privilege | ^Privilege | ||
| - | ^Frequencies above 30 MHz | <fc #008000>Y</ | + | ^Frequencies above 30 MHz | <fc #008000>✔</ |
| - | ^Power up to 250 W | + | ^Power up to 250 W |
| - | ^Frequencies below 30 MHz | <fc #ff0000>N</ | + | ^Frequencies below 30 MHz | <fc #ff0000>✘</ |
| - | ^Power up to 1 kW | <fc #ff0000>N</ | + | ^Power up to 1 kW | <fc #ff0000>✘</ |
| - | ^Build or Modify Radios | + | ^Build or Modify Radios |
| - | ^Manage a repeater | + | ^Manage a repeater |
| - | ^Remote Control Radios | + | ^Remote Control Radios |
| </ | </ | ||
| + | |||
| + | |||
hambasics/sections/intro.1775097693.txt.gz · Last modified: by va7fi