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Amateur Radio

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Awarded 1213 times.
DIY 40m Antenna tuning: RLC and SWR
Awarded yesterday
Is it possible to make a shield that blocks time-varying electric fields, but not time-varying magnetic fields?
Awarded yesterday
What causes this "Wedge" in weather Doppler radar imagery?
Awarded Feb 24 at 14:51
What's the difference between saying “CQ” or “QRZ” in a contest?
Awarded Feb 9 at 22:16
(post deleted or otherwise unavailable)
Awarded Feb 2 at 18:50
antenna simulation with OpenEMS designs in FreeCAD and x3d transfer
Awarded Dec 29, 2025 at 22:08
Bringing Amateur Radio Equipment into Taiwan
Awarded Dec 28, 2025 at 1:47
(post deleted or otherwise unavailable)
Awarded Dec 6, 2025 at 23:41
How do you ground a EFHW?
Awarded Nov 28, 2025 at 15:18
Why does AM have sidebands?
Awarded Nov 5, 2025 at 10:09
How can I estimate the approximate received radio power or signal strength based on limited data?
Awarded Oct 14, 2025 at 22:45
Is there a limit to the narrowness of a radio signal?
Awarded Sep 14, 2025 at 16:47
Upper Frequency Limit for Bouncing Off Ionosphere
Awarded Sep 13, 2025 at 18:09
2,4GHz Spectrum Analyzer with wireless card
Awarded Aug 30, 2025 at 21:02
(post deleted or otherwise unavailable)
Awarded Aug 27, 2025 at 1:58
Antenna Knowledge: Possible Yagis
Awarded Aug 2, 2025 at 22:32
Could my receiver frontend be damaged?
Awarded Jul 29, 2025 at 17:42
Dual band yagi-uda radiation problem
Awarded Jul 9, 2025 at 12:50
Morse Code: Tree form, is there an easier way to memorize this?
Awarded Jun 23, 2025 at 4:54
Looking for a CW Tutor app
Awarded Jun 11, 2025 at 3:52
Does a 1/2 wavelength end-fed antenna need a good RF ground?
Awarded May 21, 2025 at 17:10
How to match 5 W radio output to 0.005 watt input on an amplifier
Awarded May 9, 2025 at 17:22
Hopelessly Lost on BFO Island
Awarded May 8, 2025 at 17:48
Does a transceiver radio have a "receiving range"?
Awarded Apr 30, 2025 at 6:57
(post deleted or otherwise unavailable)
Awarded Apr 24, 2025 at 1:24
Help Identifying RF Data Protocol
Awarded Apr 16, 2025 at 23:23
Is my backup battery charged? Using my battery meter, how can I know?
Awarded Apr 4, 2025 at 22:11
Linking DStar repeaters using Icom syntax
Awarded Apr 3, 2025 at 17:52
Repeating signal every 0.185 MHz on 1400 MHz region
Awarded Mar 27, 2025 at 23:50
Extending the range of PMR446 power-limited equipment
Awarded Mar 22, 2025 at 21:09
(post deleted or otherwise unavailable)
Awarded Mar 20, 2025 at 6:28
(post deleted or otherwise unavailable)
Awarded Mar 19, 2025 at 14:27
CB Antenna (Jetfon AB/02 Base CB antenna) connection and grounding
Awarded Jan 28, 2025 at 16:54
Programming cable doesn't recognise Quansheng UV-5R Plus
Awarded Jan 24, 2025 at 18:35
In software circularly polarization of antennas
Awarded Jan 12, 2025 at 0:03
Passive repeater for metal hangar at airport
Awarded Dec 30, 2024 at 14:11
(post deleted or otherwise unavailable)
Awarded Dec 28, 2024 at 3:48
Why this dipole antenna has 75$\Omega$ to 300$\Omega$ matching network in it?
Awarded Dec 23, 2024 at 22:12
AM radio over rainforest
Awarded Dec 13, 2024 at 23:38
Can I float an SLA 12v battery at 13.8V forever?
Awarded Dec 10, 2024 at 18:51
(post deleted or otherwise unavailable)
Awarded Nov 25, 2024 at 22:47
Antenna Selection and Placement for high altitude rocket ground link
Awarded Nov 21, 2024 at 4:04
LoRa APRS using RaspberryPi 4B controlling an SX1278 transceiver
Awarded Nov 19, 2024 at 22:41
Remove noise from signal
Awarded Nov 2, 2024 at 13:24
Antenna Radiation and Common mode currents [closed]
Awarded Oct 29, 2024 at 18:05
Is it possible to reduce the range of an RF controller? [closed]
Awarded Oct 25, 2024 at 17:12
What's an appropriate core material for a loopstick antenna?
Awarded Oct 18, 2024 at 19:20
How should I choose an amplifier for a QRP radio?
Awarded Oct 14, 2024 at 21:04
How do I receive ATSC with GNU Radio?
Awarded Oct 13, 2024 at 22:26
How much does a RF amplifier use of its input power?
Awarded Oct 11, 2024 at 19:48
Can the ham technician test be set up so a volunteer examiner can read it to the test taker who cannot read well?
Awarded Oct 6, 2024 at 14:02
What's the minimal recommended power for EME on 2.4 Ghz?
Awarded Sep 26, 2024 at 17:38
Non-Ham satellite constellation call signs
Awarded Sep 25, 2024 at 17:24
Open source RS41 decoder
Awarded Sep 23, 2024 at 17:54
What is dBm and why is it used rather than watts?
Awarded Sep 18, 2024 at 10:54
PCB Yagi-Uda impedance matching and other smaller problems
Awarded Sep 12, 2024 at 0:15
(post deleted or otherwise unavailable)
Awarded Sep 10, 2024 at 10:11
Loading coil efficiency for 160 meters
Awarded Sep 10, 2024 at 3:50
Useful Search Terms To Find Crossband-Capable Mobile Transceiver
Awarded Sep 2, 2024 at 19:56
Trying to find an IC for RF Tx Rx switching
Awarded Aug 25, 2024 at 17:04
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