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2 votes
2 answers
113 views

HF Vertical antenna with no radial and loading coil but only ATU for 80m to 10m in a boat

2 votes
2 answers
68 views

Hi SWR with End Fed HF Wire 9:1 UNUN

2 votes
1 answer
221 views

Icom 7300 low frequency broad-spectrum noise

6 votes
5 answers
2k views

How important is the impedance and resonance of a receive antenna?

2 votes
0 answers
62 views

What is the best way to ground a whip antenna in a hotel room?

2 votes
0 answers
46 views

What could cause an Icom IC-756 Pro II to suddenly stop transmitting?

1 vote
3 answers
102 views

Why are VHF radios so much cheaper than HF ones?

3 votes
0 answers
43 views

6.765 - 6.795 MHz ISM band for prototype testing

1 vote
3 answers
69 views

QRP CW on HF using FT-817ND - filter/dsp recommended?

1 vote
1 answer
77 views

What balance (radials or counterpoise) do I need for a vertical hamstick as a stealth antenna?

6 votes
1 answer
216 views

Using shortwave communication, how difficult is it to transmit messages from the UK to the US?

1 vote
1 answer
98 views

Centre pole construction for 20 metre half wave dipole

1 vote
0 answers
51 views

How do I test if three turns are better than 4 turns?

0 votes
2 answers
67 views

NooElec for Startup HF Communication

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