howto:hambasics:sections:stationassembly
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| howto:hambasics:sections:stationassembly [2020/10/24 15:44] – [Questions] va7fi | howto:hambasics:sections:stationassembly [2020/12/30 09:08] (current) – [Questions] va7fi | ||
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| * The first part is the same as the FM Receiver above. | * The first part is the same as the FM Receiver above. | ||
| * The **Beat Frequency Oscillator**: | * The **Beat Frequency Oscillator**: | ||
| - | * The **Product Detector** mixes the IF and the BF together to extract the audio frequency (AF = |IF - BF|). | + | * The **Product Detector** mixes the IF and the BF together to extract the audio frequency (AF = |IF - BF|). \\ For example, a receiver with a local oscillator at 3.995 MHz should have its IF tuned to 455 kHz to receive an incoming signal of 3.54 MHz. |
| * The **audio amplifier** increases the strength of the baseband signal before passing it to the speaker. | * The **audio amplifier** increases the strength of the baseband signal before passing it to the speaker. | ||
| Line 115: | Line 115: | ||
| - | ======= Questions | + | ====== Questions ====== |
| * B-003-001-001 -> B-003-008-006 | * B-003-001-001 -> B-003-008-006 | ||
| * B-003-010-004 -> B-003-010-006 | * B-003-010-004 -> B-003-010-006 | ||
howto/hambasics/sections/stationassembly.1603579478.txt.gz · Last modified: 2020/10/24 15:44 by va7fi