Phil Frost - W8II's user avatar
Phil Frost - W8II's user avatar
Phil Frost - W8II's user avatar
Phil Frost - W8II
  • Member for 10 years, 5 months
  • Last seen more than 2 years ago
  • United States
44 votes

Using a balun with a resonant dipole

44 votes

Effect of different metals for antenna elements

38 votes

FCC sends "Notice of Dismissal" with quite threatening language just for denial of a vanity callsign?

32 votes
Accepted

Which HF bands are best during the day and which are better at night?

26 votes

Why do amateur radio operators call an RF choke a balun?

25 votes

Is it illegal to key up and not identify?

22 votes
Accepted

Is free space path loss dependent on frequency?

21 votes
Accepted

How can I protect equipment against a lightning strike?

20 votes

Using a balun with a resonant dipole

20 votes
Accepted

Is there a simple, DIY, antenna suitable for HF receive only?

20 votes
Accepted

What is the effect of using different number of radials with ground plane antenna

19 votes
Accepted

Why do repeaters use cavity filters?

19 votes

What is a Gamma match in the context of the driven element of a Yagi antenna?

18 votes
Accepted

Can I reduce RFI/noise at the antenna?

18 votes
Accepted

SDR sampling bandwidth - do the bits per sample matter?

17 votes

What is the relationship between SWR and receive performance?

17 votes
Accepted

Why do we use decibels in radio?

16 votes
Accepted

What does a noise blanker really do, and what are the side effects?

16 votes
Accepted

Are antennas circuits?

15 votes
Accepted

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

15 votes

How to detect common-mode currents or “RF in the shack”?

15 votes
Accepted

What is a linear RF amplifier?

15 votes
Accepted

How to reduce RF in the shack when using vertical HF antenna (no radials)

15 votes

Bandwidth of a CW signal?

14 votes

How does IQ modulation work (intuitively)?

14 votes
Accepted

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?

14 votes
Accepted

What is the definition of DX?

14 votes
Accepted

SDR: Quadrature demodulation vs direct RF sampling

14 votes
Accepted

How can I calculate the effects of an LNA, antenna gain, etc. on noise performance?

14 votes
Accepted

How Could Superheterodyne Receiver Ever Work?

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