User VU2NHW

16 votes

12 answers

18k views

How can I safely transmit without an antenna tuner or SWR meter?

asked Nov 8, 2013 at 5:39

14 votes

4 answers

2k views

What should I consider when choosing a coaxial cable?

feed-line coaxial-cable

asked Oct 22, 2013 at 19:48

13 votes

4 answers

2k views

When may a ham operate beyond the privileges of their licence class?

license

asked Oct 25, 2013 at 12:43

12 votes

1 answer

6k views

How is the IF for a superhet selected?

superheterodyne equipment-design

asked Nov 25, 2013 at 10:05

11 votes

6 answers

3k views

Does iron ore in the ground affect my signal?

propagation earth

asked Oct 29, 2013 at 20:48

10 votes

1 answer

1k views

Can I have multiple inverted-vee antenna fed by a single coax?

antenna antenna-construction inverted-vee antenna-system

asked Oct 24, 2013 at 13:27

10 votes

4 answers

347 views

What sources of power are useful in emergency situations?

emergency power-supply dc-power

asked Nov 29, 2013 at 16:37

10 votes

4 answers

7k views

How do I find out what bands are open?

propagation procedure emergency

asked Jul 22, 2014 at 12:37

9 votes

1 answer

14k views

What is a waterfall display?

transceiver equipment

asked Nov 29, 2013 at 4:42

9 votes

2 answers

2k views

Why is the risk of damage to a transmitter due to a mismatched antenna at lower frequencies greater?

antenna impedance antenna-tuner impedance-matching

asked Jun 17, 2014 at 5:15

9 votes

2 answers

248 views

How is ARES different from RACES?

emergency

asked Oct 23, 2013 at 16:35

9 votes

2 answers

4k views

Why do so many HF transceivers use a UHF connector?

transceiver connectors pl259-so239-connector

asked Nov 1, 2013 at 5:51

9 votes

1 answer

106 views

Can two diodes be parallelled in RB to get double the capacitance?

diy varicap

asked Nov 5, 2013 at 12:50

9 votes

2 answers

3k views

What is the largest gauge (thinnest diametre) wire I may use as an antenna?

antenna-construction wire-antenna

asked Nov 7, 2013 at 7:46

9 votes

2 answers

387 views

How does the South Atlantic Anomaly affect propagation in the HF bands?

hf propagation

asked Nov 12, 2013 at 17:13

6 votes

1 answer

251 views

Does mixed-mode operation qualify as a QSO? [closed]

legal modes logging procedure

asked Oct 26, 2013 at 17:07

6 votes

2 answers

301 views

Does the waveform of the VFO necessarily have to be sinusoidal?

equipment-design oscillator vfo

asked Jun 12, 2014 at 18:04

6 votes

4 answers

7k views

Does oxidation of the antenna elements have any impact on the signal quality of the station?

antenna antenna-construction wire-antenna maintenance

asked Dec 8, 2013 at 13:33

5 votes

2 answers

741 views

Is the 3-cm band serviced by any commercial main-stream ham radio transceiver?

transceiver shf

asked Dec 16, 2013 at 18:28

5 votes

1 answer

615 views

What is a shallow/deep QSB?

jargon q-codes

asked Nov 13, 2013 at 11:22

5 votes

4 answers

209 views

When should an adapter be used to marry a coax to a connector?

feed-line connectors coaxial-cable

asked Oct 22, 2013 at 20:49

5 votes

1 answer

257 views

Are there an MTTF/MTBF/MTTR data on the typical tubes used in the FT-101/TS-520?

electronics

asked Jul 8, 2014 at 9:48

4 votes

1 answer

106 views

Under what circumstance does non-toroid former lend itself to HF?

diy inductor

asked May 7, 2014 at 18:31

4 votes

4 answers

441 views

Should the capacitance or inductance be varied to achieve resonance?

diy equipment-design impedance

asked May 15, 2014 at 2:22

3 votes

3 answers

129 views

Is a guest-operator QSO recorded in the host-station log too?

legal logging

asked Dec 2, 2013 at 17:18

3 votes

1 answer

506 views

Can an external VFO be injected into a commercial rig?

transceiver oscillator vfo

asked May 2, 2014 at 5:08

3 votes

1 answer

431 views

How can I tell the frequency without an oscilloscope, or frequency counter?

frequency oscillator

asked Nov 23, 2014 at 18:54

3 votes

1 answer

200 views

Does using a computer SMPS to supply a transceiver bleed hum into the signal?

power-supply

asked Oct 24, 2013 at 5:52

3 votes

1 answer

153 views

What are the differences in a QSO over A3F as compared to J3E?

modes procedure

asked Oct 25, 2013 at 20:51

3 votes

1 answer

96 views

How much distortion would aluminium wire stays for the centre-pole on my inverted-vee cause?

antenna antenna-theory inverted-vee

asked Oct 27, 2014 at 5:22

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41 Questions

How can I safely transmit without an antenna tuner or SWR meter?

What should I consider when choosing a coaxial cable?

When may a ham operate beyond the privileges of their licence class?

How is the IF for a superhet selected?

Does iron ore in the ground affect my signal?

Can I have multiple inverted-vee antenna fed by a single coax?

What sources of power are useful in emergency situations?

How do I find out what bands are open?

What is a waterfall display?

Why is the risk of damage to a transmitter due to a mismatched antenna at lower frequencies greater?

How is ARES different from RACES?

Why do so many HF transceivers use a UHF connector?

Can two diodes be parallelled in RB to get double the capacitance?

What is the largest gauge (thinnest diametre) wire I may use as an antenna?

How does the South Atlantic Anomaly affect propagation in the HF bands?

Does mixed-mode operation qualify as a QSO? [closed]

Does the waveform of the VFO necessarily have to be sinusoidal?

Does oxidation of the antenna elements have any impact on the signal quality of the station?

Is the 3-cm band serviced by any commercial main-stream ham radio transceiver?

What is a shallow/deep QSB?

When should an adapter be used to marry a coax to a connector?

Are there an MTTF/MTBF/MTTR data on the typical tubes used in the FT-101/TS-520?

Under what circumstance does non-toroid former lend itself to HF?

Should the capacitance or inductance be varied to achieve resonance?

Is a guest-operator QSO recorded in the host-station log too?

Can an external VFO be injected into a commercial rig?

How can I tell the frequency without an oscilloscope, or frequency counter?

Does using a computer SMPS to supply a transceiver bleed hum into the signal?

What are the differences in a QSO over A3F as compared to J3E?

How much distortion would aluminium wire stays for the centre-pole on my inverted-vee cause?