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home QRZCQ - The database for radio hams 
 
2025-02-15 12:14:12 UTC
 

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Articles from and for hams

• Hacking With Longwave

Added at 2025-01-02 14:00:09

by WA8185SWL



Power Grids Vulnerable to Longwave Hacking?



• Is it really Morse code, or Vail code?

Added at 2024-12-29 00:39:17

by WA8185SWL



Alfred Vail produced the first telegraphh key.



• Handheld Satellite Dish Is 3D Printed

Added at 2024-12-23 21:27:17

by WA8185SWL



Lightweight, DIY satellite dish



• Shape-shifting multi-band antenna

Added at 2024-11-29 03:49:19

by WA8185SWL



An antenna that can change its shape based on its temperature.



• Nowadays, more than ever, look for your "personality" in the QSO!

Added at 2020-11-03 14:32:59

by CT1BWW



Be Happy using you callsign and calling CQ ! it doesn't matter if is DX or Not!



• Be proud of your call sign and demonstrate your skills

Added at 2020-10-30 14:24:14

by CT1BWW



It is a good time to value ourselves as humans and stop a little with the machines: Whatsap, Facebook, Twiter, Instagram, and even the FT8, RTTY, PSKL, JT65 etc.



• WiFi HF Antenna Switch

Added at 2017-07-21 13:23:35

by VA6DTX



This article describes the design and construction of a remote WiFi Antenna Switch for HF that is an order of magnitude more economical than any wireless remote switch available today. It is limited in its power handling and frequency bandwidth, but I believe it is of great use for most of ham radio operators.



• Alpha EZMilitary, Chameleon MPAS Side by Side Comparison

Added at 2016-05-10 09:20:05

by OH8STN



Frustrated with over optimistic reviews, the series was put together to compare these systems to one another. We are looking at performance, durability, quality, construction, deployment configurations, and value for money..



• 4 receivers in a SWL Shack

Added at 2016-04-05 15:43:03

by F61112



4 receivers compared by usage, for SWL ICOM R75, NRD 535, AR7030, RADIOJET 1102S



• 4 receivers in a SWL Shack

Added at 2016-04-05 12:47:37

by F61112



4 receivers compared by usage, for SWL (in french ) ICOM R75, NRD 535, AR7030, RADIOJET 1102S



• Today featured: flag of dxcc 108 PY1590SWL (SWL)

image of py1590swl

• Hottest QRG on DX Cluster now:

21074.0 kHz on 15m band
DX  OE8PPL by  EA1AHP

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Special call PA01 mil until PA08MIL is…


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CQ-WW-DX -CW 2016 Portugal with CR5K


Added at 2016-10-24 12:52:34 by CT1BWW


CQWW on SI9AM


Added at 2015-10-07 17:01:12 by ON6UQ


FCC Eliminates Vanity Call Sign Regulato…


Added at 2015-05-24 18:50:38 by WC4R



• Latest articles:

Hacking With Longwave


Added at 2025-01-02 14:00:09 by WA8185SWL


Is it really Morse code, or Vail code?


Added at 2024-12-29 00:39:17 by WA8185SWL


Handheld Satellite Dish Is 3D Printed


Added at 2024-12-23 21:27:17 by WA8185SWL


Shape-shifting multi-band antenna


Added at 2024-11-29 03:49:19 by WA8185SWL


Nowadays, more than ever, look for your…


Added at 2020-11-03 14:32:59 by CT1BWW



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