Amateur Radio Callsign Prefix Lookup :: HFRadio.org
(what country is that prefix from?)



I recommend the following...

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NEW! ACE HF Pro
Best propagation modeling and circuit simulation software for Amateur and Shortwave Radio Operators
ACE-HF Modeling Software


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PropLab Pro
Best ionospheric ray-tracing software for Radio Operators
PropLab Pro Ray-tracing Software


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Take a listen to the Space Weather Podcast!

NW7US Space Weather / Radio Proapgation Podcast; E4 - Subject: No more sunspots by 2015!? It is possible, if the trend revealed in current sunspot research at Kitt Peak, AZ, continues. Listen now!

Podcast home: NW7US Podcast


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Gain the on-air edge: This article explains how the ANTENNA is the key! -> Read this introduction to Antenna Modeling


Main Propagation Menu:

- Last Minute HF Forecast
- Current Forecast Section
- Sunspot Cycle/MUF/FOT Tables
- Current Optimal Frequencies
- Aurora Resources

- Educational Resources
- What's a CME?

How-To Articles:

- Is HF Propagation Reciprocal?
- De-mystifying HF Radio Propagation and Modeling

Check out the ACE-HF propagation software - the latest is version 2.05. ACE-HF is propagation forecasting and modeling for Amateur Radio as well as for Shortwave radio Listening and general HF operation. This software is even used by the military and other clients around the world. This software is developed and maintained by the same engineers that keep VOACAP up-to-date. As a result, this software is the most accurate user interface integrated with VOACAP. CHECK IT OUT, TODAY. This software is the most accurate modeling software available, and is endorsed by NW7US. Read the details to find out why.




Main Site Menu:

- Main NW7US Page
- About NW7US
- About Amateur Radio
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- Propagation Links
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Other links of interest:

- PropNET - live propagation studies

Want to learn about Propagation and Space Weather? - Take the STD Space Weather Education Course, today!

- Shortwave Radio Resource Center
- Shortwave Broadcasting Search

Comments? Please use the feedback form. I look forward to hearing your comments.

Check out some of the other activities that I am involved in:
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More resources for you:

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Join the On-line Propagation Discussion Forum, today! We need your input and participation. The NW7US Discussion Forums include:

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Subscribe to my Space WX RSS Feed:
(Opera 9.x):
Widgetize!
Look up an Amateur Radio Callsign prefix:
 
Try the whole call first, like TX0DX,
or then try just a prefix, like 9M6 or BD


Prefix not found? Perhaps the prefix has been retired. Check here: History of CTY.DAT revisions.

Comments? Bug Report? Please e-mail me.
| Current Solar Flux: 171 |
| A-index: 6 | K-index: 0 | Aurora: 4 | more... |
I need your help to keep this service up and running.

Your help keeps the NW7US Propagation and DX Resource Center alive and well.

Thank you.

I write the propagation columns for the following magazines:

CQ Magazine CQ Magazine America's fastest growing magazine for the active ham radio operator. CQ is the world's leading independent magazine devoted to amateur radio. For more than a half-century, CQ has been on ham radio's leading edge -- the first to promote mobile operating (in the 1950s), semiconductors (in the 1960s) and packet radio -- the original e-mail (in the 1980s). The amateur satellite program got its start with an idea in the pages of CQ!

CQ VHF Magazine CQ VHF Magazine It is back! May 2002 saw the return of this quarterly magazines that focuses on amateur radio above 50 MHz. Articles and columns target both the beginner as well as the expert.

Popular Communications Magazine Popular Communications Magazine Exciting reading for the shortwave and scanner listener. It features authoritative information on scanner monitoring of police, fire, utility and aircraft transmissions as well as short wave listening, monitoring short wave digital, fax and teletype broadcasts, cb radio, alternative radio, clandestine radio, telephones and wiretapping, bugging, surveillance, pirate broadcasters, military communications, amateur radio, satellite tv reception, radio history and nostalgia.


Copyright, 1998 - 2011 Tomas Hood (NW7US), all rights reserved.

developed by NW7US (Tomas)