Andrew's user avatar
Andrew's user avatar
Andrew's user avatar
Andrew
  • Member for 3 years, 11 months
  • Last seen this week
  • Melbourne VIC, Australia
5 votes
2 answers
2k views

Can I use speaker wire as a transmission line?

0 votes
2 answers
228 views

Why do ham radio operators refer to current flow on the outside of coax as common mode current?

2 votes
1 answer
92 views

How to make a 1:2 UnUn

0 votes
1 answer
91 views

How to Feed 2 x Co-Phased 4 Element Yagi Antennas?

1 vote
1 answer
95 views

What is the best way to allow for SWR adjustment for a cubical quad?

1 vote
0 answers
124 views

How to Construct a Dual Polarization Cubical Quad Antenna for 10 m?

1 vote
1 answer
218 views

Lightning Antennas 4 Element Quad Feed System Validity

1 vote
1 answer
124 views

Using Decoupling Stubs to Allow a Vertical Yagi to be Mounted on a Metal Pole

-1 votes
2 answers
98 views

Broadband dipole with no standing waves?

0 votes
1 answer
78 views

Does antenna Q cause distortion?

2 votes
2 answers
211 views

Why do ham radio operators say that a full wave dipole isn't resonant?

0 votes
1 answer
57 views

Is the phase difference between the voltage and current of the standing wave on a dipole antenna constant along the dipole's length?

1 vote
2 answers
143 views

Does the self inductance and velocity factor of the elements of a dipole antenna change its resonant frequency?

2 votes
1 answer
106 views

Why don't the traveling waves on a dipole go back down the transmission line?

-1 votes
4 answers
179 views

What comes first, Voltage or Current?

1 vote
2 answers
298 views

For a resonant half wave dipole, is the phase of the applied RF voltage at the feedpoint in phase with the current reflected from the ends?

2 votes
1 answer
198 views

Does SWR change along the length of a transmission line?

7 votes
1 answer
152 views

Where exactly does atmospheric noise (QRN) come from?

3 votes
2 answers
286 views

Dual Polarization Yagi Antenna for 10 m

-5 votes
4 answers
445 views

Exactly what is the cause for the zero reactance seen in the impedance at the center feed point of a resonant half wave dipole?

4 votes
2 answers
419 views

Does the output of a BFO for a short wave receiver have to be exactly a sine wave?

0 votes
4 answers
378 views

Why is a half wave dipole resonant?

3 votes
3 answers
491 views

Confusion about dipole standing waves and feed point impedance

0 votes
1 answer
136 views

For a center fed half wave dipole operated at resonance, are the voltage and current in phase only at the feed point?

2 votes
4 answers
699 views

Does a resonant antenna work better than a non-resonant antenna?

2 votes
6 answers
867 views

For a half wave dipole antenna, what's the value of the reactances that cancel out when the antenna is resonant?

0 votes
4 answers
384 views

Variable polarization Yagi using two antennas on the same boom, joined together with variable feedpoint phase?

3 votes
5 answers
280 views

Can I use a 1/4 wave decoupling stub to enable mounting of a vertical yagi on a metal pole?

4 votes
1 answer
207 views

Identification of valve

0 votes
2 answers
154 views

Small size vertical 10 m antenna with high gain