User hjf

1

12

votes

4

answers

1k

views

Is “low loss” cable required for HF?

hf coaxial-cable feed-line

Mar 15 at 23:04 Phil Frost - W8II 44k

8

votes

4

answers

1k

views

Real world performance of magnetic loop antennas?

antenna rfi magnetic-loop

Jun 12 '19 at 11:15 Brian K1LI 6,632

1

7

votes

2

answers

625

views

Multiband vertical antenna not working as expected

antenna vertical-antenna

Oct 21 '19 at 20:42 Kevin Reid AG6YO♦ 21.3k

7

votes

4

answers

2k

views

Antenna options for a 10x20m property with a large metal roof?

antenna antenna-construction hf

Jun 12 '19 at 16:30 Ted 121

5

votes

5

answers

136

views

Is “coil loading” a type of impedance match?

antenna impedance-matching

Apr 21 at 19:10 Rich Morgan - KF9F 59

5

votes

2

answers

1k

views

Base vs center loading a vertical antenna

antenna vertical-antenna

Sep 23 '19 at 20:09 Mike Waters♦ 6,851

1

5

votes

3

answers

452

views

Only noise, no signals whatsoever on HF

rfi ft8 reception

Jun 4 '19 at 0:21 Tim Seed 242

4

votes

1

answer

205

views

Using a trap out of its resonance frequency?

antenna trap

May 13 at 12:56 Brian K1LI 6,632

4

votes

3

answers

74

views

What kind of antenna for an automatic high bands monitoring station?

antenna propagation wspr

Apr 19 at 23:23 Brian K1LI 6,632

4

votes

2

answers

117

views

Basic antenna matching theory?

antenna antenna-theory loop-antenna antenna-modeling

Nov 5 '19 at 21:30 Mike Waters♦ 6,851

4

votes

2

answers

421

views

Does a dipole require a 1.5:1 balun?

balun

Oct 30 '19 at 16:59 Phil Frost - W8II 44k

3

votes

1

answer

119

views

Bias Tee for HF: noise and losses?

hf dc-power

May 7 at 10:49 Brian K1LI 6,632

3

votes

0

answers

184

views

The whole neighborhood's internet drops when I transmit on 40M

rfi

Apr 6 at 16:07 hjf 1,169

3

votes

2

answers

193

views

How to estimate a dipole feedpoint impedance?

antenna antenna-theory dipole impedance-matching folded-dipole

Oct 9 '19 at 17:49 Phil Frost - W8II 44k

2

votes

0

answers

80

views

Vertical antenna near power and cable lines

vertical-antenna

May 21 at 22:35 hjf 1,169

2

votes

2

answers

184

views

Yagi: split or solid driven element?

antenna-construction yagi

Apr 14 at 16:01 Phil Frost - W8II 44k

2

votes

1

answer

128

views

How to model my rooftop vertical on 4NEC2?

antenna antenna-modeling

Mar 30 at 9:19 Richard Fry 2,642

2

votes

0

answers

122

views

Extremely strong QRM on VHF?

vhf noise

Mar 12 at 0:18 hjf 1,169

2

votes

0

answers

66

views

Circular polarized antenna feed changes as I rotate it?

antenna-theory satellites microwave polarization

Mar 6 at 16:05 Mike Waters♦ 6,851

2

votes

1

answer

563

views

300 ohm to 50 Balun at antenna feedpoint, or near receiver?

antenna coaxial-cable balun

Oct 29 '19 at 15:48 Aleksander Alekseev - R2AUK 3,325

2

votes

1

answer

138

views

Grounding for an upper floor shack

grounding vertical-antenna

Oct 9 '19 at 17:46 hotpaw2 8,789

1

vote

1

answer

86

views

Yagi performing far worse than a dipole

antenna dipole yagi

Aug 10 at 0:32 Andrew 2,092

1

vote

1

answer

298

views

How does an Airspy HF+ Discovery compare to a “real” radio?

software-defined-radio

Jun 18 at 23:08 Marcus Müller 12.3k

1

vote

2

answers

63

views

Amplified RX-only loop antennas for DX operation?

loop-antenna

Jun 17 at 22:27 hotpaw2 8,789

1

vote

1

answer

296

views

how does this collinear antenna work?

vhf uhf vertical-antenna phased-array

May 10 at 9:44 hobbs - KC2G 5,165

1

vote

1

answer

51

views

Modeling a multiband Yagi in 4NEC2?

antenna-modeling

Apr 25 at 1:22 Brian K1LI 6,632

0

votes

2

answers

80

views

Built-in ATU vs Remote?

antenna-tuner

May 30 at 10:04 Brian K1LI 6,632

0

votes

1

answer

50

views

What is the effect of coil Q on a shortened dipole?

antenna-theory dipole yagi

Nov 29 '19 at 2:53 Mike Waters♦ 6,851

0

votes

3

answers

245

views

To folded dipole, or not to folded dipole?

antenna dipole folded-dipole

Oct 29 '19 at 3:06 hobbs - KC2G 5,165

Stack Exchange Network

current community

your communities

more stack exchange communities

Next badge

29 Questions

Is “low loss” cable required for HF?

Real world performance of magnetic loop antennas?

Multiband vertical antenna not working as expected

Antenna options for a 10x20m property with a large metal roof?

Is “coil loading” a type of impedance match?

Base vs center loading a vertical antenna

Only noise, no signals whatsoever on HF

Using a trap out of its resonance frequency?

What kind of antenna for an automatic high bands monitoring station?

Basic antenna matching theory?

Does a dipole require a 1.5:1 balun?

Bias Tee for HF: noise and losses?

The whole neighborhood's internet drops when I transmit on 40M

How to estimate a dipole feedpoint impedance?

Vertical antenna near power and cable lines

Yagi: split or solid driven element?

How to model my rooftop vertical on 4NEC2?

Extremely strong QRM on VHF?

Circular polarized antenna feed changes as I rotate it?

300 ohm to 50 Balun at antenna feedpoint, or near receiver?

Grounding for an upper floor shack

Yagi performing far worse than a dipole

How does an Airspy HF+ Discovery compare to a “real” radio?

Amplified RX-only loop antennas for DX operation?

how does this collinear antenna work?

Modeling a multiband Yagi in 4NEC2?

Built-in ATU vs Remote?

What is the effect of coil Q on a shortened dipole?

To folded dipole, or not to folded dipole?