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Chris K8NVH

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2 posts edited

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Votes Activity Newest Views Added

61

votes

18

answers

8k

views

Why is Morse code still in use?

modes cw

2d ago David G 19

7

votes

4

answers

3k

views

What fraction of 2x2 USA call signs are vanity calls?

united-states callsign

Sep 6 '19 at 19:48 mrog 982

6

votes

1

answer

531

views

What is “Billion Code” for garage door openers from around 1996?

software-defined-radio digital-modes

Jul 31 '19 at 18:44 Duck Dodgers 223

2

votes

1

answer

251

views

Is MFJ-1708SDR safe with RF switching

software-defined-radio

Mar 27 '18 at 21:53 Glenn W9IQ 17.6k

1

vote

1

answer

169

views

ax.25 error shown in direwolf. Fails on channel 8, then 2, then works

aprs software linux direwolf

Jan 30 '19 at 0:02 ASzy 67

0

votes

2

answers

128

views

How to use 75ohm (RG6) coax?

antenna coaxial-cable impedance impedance-matching feed-line

Oct 12 at 15:18 F. Sessink 474

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votes

1

answer

2k

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Input and output impedance of antenna/circuit: theory and measurement methods?

antenna measurement impedance-matching

Jul 26 at 21:18 Daniel 101

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