Top Questions

3 votes
1 answer
49 views

Why is SNR for FT8 defined using the noise power in the 2500 Hz channel containing the FT8 signal?

0 votes
4 answers
151 views

Connecting two sites in the Arctic and Antarctic with a HUGE equatorial repeater? (Science fiction story advice)

1 vote
1 answer
130 views

Noise power with and without antenna

4 votes
2 answers
590 views

What is this (dangerous) connector type that looks like SMA?

2 votes
1 answer
277 views

How can I know (check or detect or analyze) which modulation using of my remote control switch?

1 vote
2 answers
475 views

How do I send a raw CI-V command via rigctl?

5 votes
3 answers
651 views

What cause the spectrum peak of `center frequency`?

-1 votes
0 answers
56 views

Input impedance of a shortened dipole antenna

5 votes
1 answer
206 views

Why do 9:1 ununs use type 2 material for the core?

-2 votes
0 answers
47 views

How to receive GPS data via APRS and RFM95W LoRa module

1 vote
2 answers
84 views

Performance of 2M/440 Amateur magnet mount antenna with CB

-2 votes
0 answers
41 views

Baofeng Uv-13pro

2 votes
2 answers
120 views

G/ in front of a QSL calls sign: SV1ABA

2 votes
1 answer
43 views

Use of Yaesu FT-7800R External Speaker Jack Loss of Audio

2 votes
1 answer
37 views

Rig Expert AA-35 ZOOM Amateur Band coverage in the United States

5 votes
2 answers
217 views

Repeater Amplifiers DMR vs Analog

-3 votes
0 answers
29 views

Alarm signal usingTransmitter receiver 10 km beep beep by star /stop carrier signal only 10 km [closed]

1 vote
0 answers
32 views

What should I put in the CLAIMED-SCORE field in my CQ WPX RTTY log?

3 votes
4 answers
827 views

Help designing a random wire antenna to work with my tuner

-2 votes
0 answers
28 views

Baofeng UV-5R Ham Radio Two Way Radio [duplicate]

-3 votes
1 answer
79 views

Handheld amateur radio

2 votes
1 answer
80 views

Insulated mounting pole section for vertical dipole?

0 votes
1 answer
23 views

Where to find definition of ITU ZOnes / CIRAF zones

3 votes
2 answers
140 views

What are the best SSB bands for hiking/tourism?

-1 votes
0 answers
31 views

Specification of disk-yagi antenna for 3500 Mhz band

5 votes
2 answers
52 views

Metal panels in 4nec2

0 votes
1 answer
179 views

Vertex Standard VZ-28 - Unable to import settings into software due to password

6 votes
2 answers
435 views

Romanian amateur radio license

3 votes
3 answers
726 views

How to make ELF-ULF antenna myself?

0 votes
2 answers
104 views

How to determine the best length for a short dipole antenna

1 vote
1 answer
482 views

IC-7300 internal tuner failing when before tuning I have a 1.5:1 SWR?

2 votes
2 answers
6k views

Baofeng UV-5R ~ 800MHz transmission enabled

2 votes
4 answers
535 views

What's the realistic SSB reception range for 25W on 20m and 40m?

0 votes
0 answers
28 views

Audio QAM Transceiver Problems GNU Radio

1 vote
1 answer
43 views

Entel HT880 Programming Help Needed

4 votes
2 answers
231 views

Can an American General licensee operate in Portugal during a visit?

0 votes
1 answer
57 views

Need help installing long wire antenna for shortwave reception

3 votes
2 answers
76 views

Automatic switching of RX antenna -- xcvr has only one antenna connection (SO-259)

1 vote
1 answer
608 views

How to Construct a Dual Polarization Cubical Quad Antenna for 10 m?

3 votes
2 answers
76 views

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

2 votes
0 answers
102 views

May a station transmit an automatic response to me on reception of my command?

0 votes
0 answers
36 views

My icom IC 735 has no TX, external meter shows correct amount of power but no one can hear me

11 votes
1 answer
2k views

Tuning a wire antenna by folding

2 votes
2 answers
93 views

Do I need to be a US citizen to be covered by CEPT when I travel and use a radio?

1 vote
2 answers
174 views

Motorola XT460 CPS cable pinout

1 vote
2 answers
93 views

Amateur radio antennas cause static on a cell phone call

1 vote
1 answer
139 views

Any hints on working RTTY split?

0 votes
0 answers
43 views

ICOM R8500-Transfer data and audio through e-line services


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