Electrical Math
Electrical Math
Frequency
What is the most the actual transmit frequency could differ from a reading of 462,100,000 Hertz on a frequency counter with a time base accuracy of ± 0.1 ppm?
What is the most the actual transmit frequency could differ from a reading of 462,100,000 Hertz on a frequency counter with a time base accuracy of ± 0.1 ppm?
46.21 Hz
From hamingitup:
461,100,000Hz = 4.611x108 Hz
0.1 ppm = 0.1 (parts/million) =
0.1 / 1,000,000 =
10-1 / 106 = 10-7
Freq ∗ ppm = +/- difference
4.611x108 ∗ 10-7 = 46.21
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The second harmonic of a 380 kHz frequency is:
760 kHz.
From wp2ahg:
Harmonics ♬ have frequencies of 2f, 3f, 4f, etc.
So, the second harmonic is 2f, or
\[(2) ∗ (380 \text{ kHz}) = 760 \text{ kHz}\].
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What is the second harmonic of SSB frequency 4146 kHz?
What is the second harmonic of SSB frequency 4,146 kHz?
8,292 kHz.
From wp2ahg:
Harmonics ♬ have frequencies of 2f, 3f, 4f, etc.
So, the second harmonic is 2f, or
\[(2) ∗ (4,146 \text{ kHz}) = 8,292 \text{ kHz}\].
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What is the most the actual transmitter frequency could differ from a reading of 156,520,000 hertz on a frequency counter with a time base accuracy of ± 1.0 ppm?
What is the most the actual transmitter frequency could differ from a reading of 156,520,000 hertz on a frequency counter with a time base accuracy of ± 1.0 ppm?
156.52 Hz
From wp2ahg:
156,520,000 Hz ∗ (1 / 1,000,000) = 156.52 Hz
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What is the most the actual transmitter frequency could differ from a reading of 156,520,000 Hertz on a frequency counter with a time base accuracy of +/- 10 ppm?
What is the most the actual transmitter frequency could differ from a reading of 156,520,000 Hertz on a frequency counter with a time base accuracy of +/- 10 ppm?
1,565.20 Hz
From wp2ahg:
156,520,000 Hz ∗ (10 / 1,000,000) = 1,565.20 Hz
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What is the most the actual transmitter frequency could differ from a reading of 462,100,000 hertz on a frequency counter with a time base accuracy of ± 1.0 ppm?
What is the most the actual transmitter frequency could differ from a reading of 462,100,000 hertz on a frequency counter with a time base accuracy of ± 1.0 ppm?
(D). 462.1 Hz.
wp2ahg
462,100,000 Hz ∗ (1 / 1,000,000) = 462.1 Hz
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