natevw - AF7TB's user avatar
natevw - AF7TB's user avatar
natevw - AF7TB's user avatar
natevw - AF7TB
  • Member for 9 years, 8 months
  • Last seen more than a month ago
3 votes
2 answers
102 views

What should a NanoVNA show for twisted pair impedance in TDR mode?

11 votes
2 answers
4k views

Why isn't twisted pair used for feedlines?

5 votes
2 answers
3k views

Why do Baofeng radios have such poor reception reliability?

2 votes
2 answers
818 views

Can I use my US callsign to transmit while in El Salvador?

1 vote
2 answers
173 views

What's the maximum possible "DC input to radiated RF" energy efficiency of a radio transmitter system?

13 votes
1 answer
4k views

Is there any legal recourse against unauthorized usage of a private repeater in the USA?

3 votes
1 answer
93 views

Will two GPSDO units be precisely in phase with each other?

2 votes
1 answer
188 views

How much does a RF amplifier use of its input power?

12 votes
3 answers
1k views

What "test transmissions" are allowed above 51MHz?

8 votes
1 answer
253 views

What will the *amplitudes* of mixer products be?

1 vote
1 answer
278 views

How to calculate passive repeater gain?

5 votes
3 answers
4k views

How to find or derive the maximum safe input power to a receiver?

1 vote
1 answer
85 views

Does a filter or inductor's power rating matter in its passband, or only in the attenuated frequency range?

2 votes
4 answers
1k views

Is an off-center fed dipole (and/or doublet) inherently unbalanced?

1 vote
2 answers
3k views

How to best ditch the counterpoise of a random wire antenna?

1 vote
2 answers
244 views

Is a 94' dipole antenna fed directly by coax useful for any particular known purpose?

2 votes
3 answers
758 views

Why does an HF "monopole" need dozens and dozens of radials while a VHF/UHF "ground plane" antenna only needs four?

2 votes
3 answers
222 views

Is a UHF connector any real disadvantage off the transmitter circuit board or at an antenna feedpoint?

1 vote
2 answers
150 views

How should coax be physically wired to a "stud" mag mount?

3 votes
4 answers
227 views

Is it worse to use an antenna tuner on an already-loaded short monopole?

5 votes
1 answer
592 views

Why would a VNA not make a good Spectrum Analyzer? Or an SDR a good VNA?

5 votes
2 answers
1k views

Is the original satellite dish "ruined" when a slot antenna is cut into it?

5 votes
1 answer
820 views

Why does path loss decrease as frequency decreases? [duplicate]

2 votes
2 answers
60 views

How should I think about "extra" impedances inserted within/across a transmission line?

2 votes
1 answer
371 views

What is a "feed-through load" and how does it work?

8 votes
5 answers
6k views

Should I learn morse at "both" speeds?

9 votes
5 answers
829 views

What limits a PIN diode or varicap from being used in a "Software Defined [Radio] Filter"?

5 votes
1 answer
767 views

How does this W6NBC "derivative of the classical slot antenna" work?

6 votes
2 answers
4k views

How to measure a balun for effectiveness?

7 votes
4 answers
763 views

How can quadrature mixing adjust the phase of all frequencies by the same amount? Can it be done in the digital domain?