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JayC

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Votes Activity Newest Views Added

26

votes

4

answers

4k

views

What is a link budget, and how do I make one?

jargon range path-loss

Nov 17 '18 at 12:54 user 4,550

14

votes

2

answers

3k

views

If I install a G5RV in my attic how could I be certain there are not harmful levels of RF in the shack, or my kids bedroom?

antenna safety

Feb 25 '14 at 20:31 Phil Frost - W8II 44k

13

votes

2

answers

690

views

What are the (US) rules about unlicensed low-power transmissions?

united-states legal rf-power

Dec 12 '13 at 2:25 Community♦ 1

9

votes

2

answers

764

views

If two antennas of 50 Ω and 377 Ω have VSWR=1:1, then which one is more efficient?

antenna impedance antenna-theory

Dec 15 '15 at 22:17 Community♦ 1

7

votes

1

answer

2k

views

How do I know if my dummy load is working?

dummy-load

Dec 9 '15 at 18:24 Kevin Reid AG6YO♦ 21.3k

7

votes

3

answers

2k

views

Drones for lifting verticals?

antenna

Nov 18 '16 at 1:24 Kevin Reid AG6YO♦ 21.3k

7

votes

1

answer

2k

views

What does the Friis transmission equation represent and how is it derived?

math path-loss

Apr 29 '15 at 1:32 Community♦ 1

6

votes

3

answers

4k

views

What frequencies am I not allowed to use north of line A in the USA?

united-states legal frequency

Jan 30 '17 at 21:01 Community♦ 1

6

votes

4

answers

1k

views

Can a common-mode current exist on the inside of a coax shield?

coaxial-cable theory transmission-line

Dec 3 '17 at 16:14 Glenn W9IQ 17.6k

5

votes

3

answers

1k

views

Lightning strikes nearby and coaxial cable

antenna-system lightning

Apr 12 '18 at 0:48 Brian K1LI 6,642

4

votes

1

answer

903

views

Why is 900MHz restricted in some areas in the US?

united-states legal 33cm-band

Feb 4 '16 at 19:43 Community♦ 1

1

vote

1

answer

3k

views

Homebrew 2 meter Yagi construction

antenna antenna-construction yagi

Jan 23 '19 at 0:56 Community♦ 1

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