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hotpaw2
  • Member for 10 years, 5 months
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10 votes
1 answer
2k views

How does a "chip antenna" work?

4 votes
3 answers
2k views

How low a sidetone frequency will allow QRQ CW to be copied?

7 votes
5 answers
2k views

Why are an antenna’s nulls sharper than its lobes?

9 votes
1 answer
2k views

How does SDR demodulation differ between wideband and narrowband FM?

3 votes
2 answers
2k views

Using two short mobile HF antennas to make a vertical dipole

4 votes
2 answers
2k views

Ferrite beads on a wire antenna?

5 votes
2 answers
2k views

Best QRP HF band for small antenna?

2 votes
2 answers
2k views

Short low dipole, better if horizontal or vertical?

3 votes
1 answer
2k views

Using an HF antenna for VHF scanning

9 votes
4 answers
2k views

How many new amateur operators can currently use CW?

1 vote
1 answer
2k views

Spacing between words in CW using Farnsworth timing?

9 votes
2 answers
2k views

What are some ways to ground a transmitter+antenna in an enclosed attic?

1 vote
2 answers
1k views

Loop on ground for transmit?

4 votes
1 answer
1k views

FM squelch SDR algorithm?

3 votes
2 answers
1k views

Advantages of IQ mixer versus direct sampling SDR architectures?

3 votes
4 answers
1k views

POTA and SOTA Spotting networks?

9 votes
1 answer
1k views

Calculating the signal-to-noise ratio for CW (Morse Code) signals?

3 votes
2 answers
1k views

What is Spectral Subtraction for noise reduction?

3 votes
3 answers
1k views

Maximum legal QRQ CW speed?

4 votes
1 answer
956 views

CW skimmers and spotting networks?

7 votes
1 answer
914 views

Coherent CW synchronization?

10 votes
2 answers
913 views

Scoring quality of Morse Code "fist"?

1 vote
1 answer
882 views

Wiring a CW paddle and straight key to a TRS connector?

9 votes
2 answers
879 views

IQ imbalance after quadrature mixing

8 votes
4 answers
870 views

Required SSB sideband and carrier suppression?

5 votes
3 answers
838 views

Consistency of Morse Code/CW sending speed

5 votes
2 answers
819 views

What are the effects of different feed-line incidence angles?

2 votes
2 answers
801 views

Lightbulb as an SWR detector?

2 votes
2 answers
795 views

What are the biggest amateur radio contests ("radiosport")?

1 vote
2 answers
791 views

Benefits of AGC?