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0 votes
2 answers
74 views

Why do ham radio operators refer to current flow on the outside of coax as common mode current?

0 votes
0 answers
30 views

How can i make an ULF spiral antenna for agriculture

1 vote
1 answer
126 views

Recommendations for Antennas installation with Steep slopes

1 vote
2 answers
87 views

How do I rewire a simple a.m. loop antenna that became unwound?

0 votes
3 answers
77 views

ELF antenna receiver build instructions?

20 votes
2 answers
29k views

How does a mag mount antenna achieve a ground plane?

0 votes
1 answer
54 views

YouLoop antenna for amateur satellite reception

24 votes
2 answers
5k views

How do Handheld antennas work without ground?

-2 votes
3 answers
79 views

Radio without antenna?

-1 votes
1 answer
58 views

Transmission power of Apple Wi-Fi antennas (EMF and health)

9 votes
2 answers
2k views

Why are longer antennas not suitable to pick higher frequencies?

5 votes
1 answer
202 views

EFHW: better to get far end really high, or middle somewhat high?

0 votes
3 answers
156 views

Can I use a car antenna intended for 2m/70cm on a 868mhz Lora device?

3 votes
4 answers
113 views

Issues with high SWR on HF Kits EFHW 49:1 UnUn kit

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