User hjf

11 votes

4 answers

3k views

Is "low loss" cable required for HF?

asked Mar 11, 2020 at 20:46

10 votes

4 answers

7k views

Real world performance of magnetic loop antennas?

asked Apr 9, 2019 at 15:28

7 votes

4 answers

4k views

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

asked Apr 6, 2019 at 17:04

6 votes

2 answers

961 views

Multiband vertical antenna not working as expected

asked Jun 9, 2019 at 16:05

6 votes

2 answers

5k views

Base vs center loading a vertical antenna

asked Sep 20, 2019 at 14:25

5 votes

3 answers

1k views

Only noise, no signals whatsoever on HF

asked Jun 1, 2019 at 3:18

5 votes

5 answers

754 views

Is "coil loading" a type of impedance match?

asked Apr 14, 2020 at 20:09

4 votes

3 answers

98 views

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

asked Apr 17, 2020 at 2:49

4 votes

1 answer

519 views

Using a trap out of its resonance frequency?

asked May 12, 2020 at 13:13

4 votes

2 answers

204 views

Basic antenna matching theory?

asked Oct 9, 2019 at 19:42

4 votes

2 answers

1k views

Does a dipole require a 1.5:1 balun?

asked Oct 30, 2019 at 3:42

4 votes

0 answers

594 views

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

asked Apr 6, 2020 at 16:07

3 votes

0 answers

216 views

Circular polarized antenna feed changes as I rotate it?

asked Mar 6, 2020 at 13:18

3 votes

1 answer

779 views

Bias Tee for HF: noise and losses?

asked May 7, 2020 at 1:40

2 votes

1 answer

548 views

How to model my rooftop vertical on 4NEC2?

asked Mar 29, 2020 at 3:46

2 votes

2 answers

2k views

Yagi: split or solid driven element?

asked Apr 13, 2020 at 13:34

2 votes

1 answer

5k views

how does this collinear antenna work?

asked May 6, 2020 at 2:25

2 votes

0 answers

601 views

Vertical antenna near power and cable lines

asked May 21, 2020 at 22:35

2 votes

1 answer

2k views

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

asked Oct 28, 2019 at 14:40

2 votes

2 answers

2k views

How to estimate a dipole feedpoint impedance?

asked Oct 8, 2019 at 18:35

1 vote

1 answer

333 views

Grounding for an upper floor shack

asked Oct 8, 2019 at 20:12

1 vote

2 answers

260 views

Amplified RX-only loop antennas for DX operation?

asked Jun 16, 2020 at 13:40

1 vote

1 answer

2k views

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

asked Jun 18, 2020 at 14:21

1 vote

0 answers

487 views

Extremely strong QRM on VHF?

asked Mar 10, 2020 at 2:39

1 vote

1 answer

490 views

Yagi performing far worse than a dipole

asked Aug 9, 2020 at 15:16

1 vote

1 answer

269 views

Modeling a multiband Yagi in 4NEC2?

asked Apr 24, 2020 at 14:01

0 votes

2 answers

362 views

Built-in ATU vs Remote?

asked May 29, 2020 at 21:36

0 votes

3 answers

2k views

To folded dipole, or not to folded dipole?

asked Oct 28, 2019 at 1:59

0 votes

1 answer

140 views

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

asked Nov 29, 2019 at 1:23

Stack Exchange Network

29 Questions

Is "low loss" cable required for HF?

Real world performance of magnetic loop antennas?

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

Multiband vertical antenna not working as expected

Base vs center loading a vertical antenna

Only noise, no signals whatsoever on HF

Is "coil loading" a type of impedance match?

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

Using a trap out of its resonance frequency?

Basic antenna matching theory?

Does a dipole require a 1.5:1 balun?

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

Circular polarized antenna feed changes as I rotate it?

Bias Tee for HF: noise and losses?

How to model my rooftop vertical on 4NEC2?

Yagi: split or solid driven element?

how does this collinear antenna work?

Vertical antenna near power and cable lines

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

How to estimate a dipole feedpoint impedance?

Grounding for an upper floor shack

Amplified RX-only loop antennas for DX operation?

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

Extremely strong QRM on VHF?

Yagi performing far worse than a dipole

Modeling a multiband Yagi in 4NEC2?

Built-in ATU vs Remote?

To folded dipole, or not to folded dipole?

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