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Phil Frost - W8II
  • Member for 8 years, 8 months
  • Last seen more than a month ago
  • United States
42 votes

Effect of different metals for antenna elements

39 votes

Using a balun with a resonant dipole

38 votes

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

27 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?

19 votes
Accepted

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

19 votes

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

19 votes
Accepted

How can I protect equipment against a lightning strike?

19 votes
Accepted

Why do repeaters use cavity filters?

19 votes
Accepted

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

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

Using a balun with a resonant dipole

16 votes
Accepted

Are antennas circuits?

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

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

15 votes
Accepted

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

14 votes

How do I separate dovetailed PowerPole housings?

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?

14 votes
Accepted

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

14 votes

What is the relationship between SWR and receive performance?

13 votes
Accepted

Why do we use decibels in radio?

13 votes
Accepted

How does moving a feedpoint off-center in a dipole affect the resonant frequency and resistive load?

13 votes
Accepted

SDR: Quadrature demodulation vs direct RF sampling

13 votes
Accepted

What is the definition of DX?

13 votes
Accepted

Is there an optimum Antenna Feedline Length for mobile installations?

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