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9 Questions

Votes Activity Newest Views

3

14

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6

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1k

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Where can one find recordings of Morse code, generated by humans and not machines?

cw

Jan 11 at 4:20 captcha 1,014

1

9

votes

3

answers

1k

views

Using ham radio bands for telemetry

united-states legal hf station-identification

May 1 '15 at 18:35 Kevin Reid AG6YO♦ 21.4k

6

votes

1

answer

2k

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Effect of night on VHF/UHF propagation

propagation vhf uhf

Nov 20 '14 at 19:24 Kevin Reid AG6YO♦ 21.4k

1

5

votes

3

answers

267

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Detecting signals using statistics

signal-identification dsp

Feb 15 '20 at 16:55 Kevin Reid AG6YO♦ 21.4k

1

5

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1

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191

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Images up and down the spectrum

rtl-sdr

Jan 3 '15 at 21:24 Community♦ 1

1

vote

1

answer

80

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Why does signal power drop every night?

propagation uhf rf-power

Nov 21 '18 at 19:02 Marcus Müller 12.3k

1

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0

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38

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Determining if what's on a frequency is signal, or noise [duplicate]

signal-identification noise

Sep 12 '17 at 22:24 HH- Apologize to Carole Baskin 561

1

vote

1

answer

49

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Determining modulation by spectrum

modes signal-identification

Jan 2 '15 at 9:28 s3c 777

0

votes

1

answer

100

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If the desired frequency is known, can an antenna tuner tune its 'x' different dimensions sequentially for maximum gain?

antenna

Sep 5 '14 at 0:14 Phil Frost - W8II 44.6k

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