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Phil Frost - W8II
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820 Answers

Votes Activity Newest
39
Effect of different metals for antenna elements
Feb 6 '14 at 16:33
35
Using a balun with a resonant dipole
Nov 5 '13 at 14:17
25
Why do amateur radio operators call an RF choke a balun?
Dec 5 '19 at 22:47
23
Is it illegal to key up and not identify?
Jun 2 '14 at 1:11
23
Which HF bands are best during the day and which are better at night?
May 3 '14 at 11:22
20
Is free space path loss dependent on frequency?
Mar 12 '15 at 11:59
19
Why do repeaters use cavity filters?
Dec 5 '13 at 22:10
18
SDR sampling bandwidth - do the bits per sample matter?
Nov 7 '13 at 18:35
18
Is there a simple, DIY, antenna suitable for HF receive only?
Dec 13 '13 at 20:42
16
How can I protect equipment against a lightning strike?
Feb 27 '14 at 1:42
16
Using a balun with a resonant dipole
Nov 6 '13 at 13:53
15
What is a Gamma match in the context of the driven element of a Yagi antenna?
Jun 17 '14 at 15:05
15
Can I reduce RFI/noise at the antenna?
Nov 7 '13 at 18:17
15
What is the effect of using different number of radials with ground plane antenna
Mar 7 '15 at 13:58
15
What does a noise blanker really do, and what are the side effects?
Dec 20 '13 at 16:09
14
How Could Superheterodyne Receiver Ever Work?
Jun 20 '18 at 16:49
14
Are antennas circuits?
Jan 17 '15 at 1:56
14
What is a linear RF amplifier?
Jan 27 '14 at 23:51
14
How to reduce RF in the shack when using vertical HF antenna (no radials)
Nov 7 '13 at 16:42
13
How does moving a feedpoint off-center in a dipole affect the resonant frequency and resistive load?
Oct 29 '13 at 23:44
13
Is there an optimum Antenna Feedline Length for mobile installations?
Mar 23 '14 at 18:36
13
If two antennas of 50 Ω and 377 Ω have VSWR=1:1, then which one is more efficient?
Jan 12 '14 at 15:10
13
SDR: Quadrature demodulation vs direct RF sampling
Jan 6 '14 at 13:56
12
What is the relationship between SWR and receive performance?
Dec 2 '13 at 19:29
12
Does a FCC amateur license cost money?
Mar 11 '14 at 12:14
12
How to detect common-mode currents or “RF in the shack”?
Jan 22 '14 at 21:25
12
Why does an “electrically small” antenna have narrow bandwidth?
Oct 3 '16 at 16:55
12
Why do we use decibels in radio?
Sep 14 '16 at 15:47
12
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?
Feb 25 '14 at 3:51
12
What is the definition of DX?
Jan 22 '14 at 22:35
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