There is calculator for building magnetic loop antenna. Try this calculator, to see hows the performance before making you own magnetic loop...
CW ataupun Continuous Wave SSB ataupun Single Side Band CW SSB
Sunday, January 24, 2010
Specifications: Linux kernel 2.6.31 (Gentoo); 24 frets; touchscreen; MIDI out; Ethernet; and SSH server.
thumbs up to Michael.
Wednesday, January 20, 2010
Get your copy of WorldRadio Online issue now.
available at their website http://www.cq-amateur-radio.com/WorldRadio.html
WorldRadio was a monthly amateur radio enthusiast magazine published in the United States from July, 1971 to November, 2008. The magazine was published in English and drew its subscription base primarily from the United States of America and Canada, although it had subscribers around the world. The staff of the magazine had an amateur radio club that has been assigned the call sign WR6WR.
Tuesday, January 19, 2010
Many of us think that this QSL card sent from Tunku Abdul Rahman Al-Haj to Mr. Keith, G3KYF.
See this stamp's picture, Tunku Abdul Rahman Al-Haj was from Alor Star, Kedah. Not Johor.
So, 9M2TR is not Tunku Abdul Rahman Al-Haj's callsign. Please comment if you got anything to say.
Kevin Mitnick, also known as N6NHG in ham radio world was the most wanted computer criminal in United States history. He used his social engineering skills to bypass all the security, doing phone phreaking, wiretapping and lots more.
Confirmed criminal acts
- Using the Los Angeles bus transfer system to get free rides
- Evading the FBI
- Hacking into DEC system(s) to view VMS source code (DEC reportedly spent $160,000 in cleanup costs)
- Gaining full admin privileges to an IBM minicomputer at the Computer Learning Center in LA in order to win a bet
- Hacking Motorola, NEC, Nokia, Sun Microsystems and Fujitsu Siemens systems
Alleged criminal acts
- Stole computer manuals from a Pacific Bell telephone switching center in Los Angeles
- Read the e-mail of computer security officials at MCI Communications and Digital
- Wiretapped the California DMV
- Made free cell phone calls
- Hacked SCO, PacBell, FBI, Pentagon, Novell, CA DMV, USC and Los Angeles Unified School District systems.
- Wiretapped FBI agents according to John Markoff, although denied by Kevin Mitnick.
ORIGIN OF 73
Via Louise Ramsey Moreau, W3WRE and Charles A. Wimer KC8EHA
The following is from Louise Ramsey Moreau, W3WRE: "The traditional expression "73" goes right back to the beginning of the landline telegraph days. It is found in some of the earliest editions of the numerical codes, each with a different definition, but each with the same idea in mind - it indicated that the end, or signature, was coming up. But there are no data to prove that any of these were used.
"The first authentic use of 73 is in the publication The National Telegraphic Review and Operators' Guide, first published in April 1857. At that time, 73 meant "My love to you"! Succeeding issues of this publication continued to use this definition of the term. Curiously enough, some of the other numerals used then had the same definition as they have now, but within a short time, the use of 73 began to change. "In the National Telegraph Convention, the numeral was changed from the Valentine-type sentiment to a vague sign of fraternalism. Here, 73 was a greeting, a friendly "word" between operators and it was so used on all wires.
"In 1859, the Western Union Company set up the standard "92 Code." A list of numerals from one to 92 was compiled to indicate a series of prepared phrases for use by the operators on the wires. Here, in the 92 Code, 73 changes from a fraternal sign to a very flowery "accept my compliments,"which was in keeping with the florid language of that era. "Over the years from 1859 to 1900, the many manuals of telegraphy show variations of this meaning. Dodge's The Telegraph Instructor shows it merely as "compliments." The Twentieth Century Manual of Railways and Commercial Telegraphy defines it two ways, one listing as "my compliments to you"; but in the glossary of abbreviations it is merely "compliments."
Theodore A. Edison's Telegraphy Self-Taught shows a return of "accept my compliments." By 1908, however, a later edition of the Dodge Manual gives us today's definition of "best regards" with a backward look at the older meaning in another part of the work where it also lists it as "compliments."
Editor Note -- Dodge's "The Telegraph Instructor" can be found at URL: http://artifaxbooks.com/afxrare/dodge.htm
"Best regards" has remained ever since as the "put-it-down-in-black-and-white" meaning of 73 but it has acquired overtones of much warmer meaning. Today, amateurs use it more in the manner that James Reid had intended that it be used - a "friendly word between operators." I hope that this helps you in some way....
73, Charles A. Wimer Amateur Radio Call: KC8EHA Assistant Emergency Coordinator, Trumbull County (OH) ARRL Official Emergency Station (OH)
Somebody wrote: Actually "73" was a term the old telegraph operators would use back in the old west days. It meant that they owned a Winchester 1873 rifle (their most prized possession) and that when they died they would give it to the other operator. Hense '73' meant I will will you my 73 rifle. '73s' meant you had more than one rifles that you would give to them (they were a really good friend.).
Hello, It's a nice story, but it has no basis in fact. The actual source of "73" and "88" was the list of numerical abbreviations used by wire telegraphers. These abbreviations were used in a manner similar to Q signals today. Here's a partial list of number abbreviations: 1 – Wait 2 - Important business 3 - What is the time? 6 - I am ready 7 - Are you ready? 12 - Do you understand? 13 - I understand 14 - What is the weather? 17 - Lightning here 19 - Form 19 train order (used by RR) 21 - Stop to eat 23 - All copy 24 - Repeat this back 30 - No more, end 31 - Form 31 train order (used by RR) 44 - Answer promptly by wire 73 - Best regards 88 - Love and kisses 92 - Deliver promptly 134 - Who is at the key?
Note that American Morse was used by landline telegraphers. The signal "30" in American Morse is "..._. ____" (zero is an extra long dash). This was corrupted into a single character, "..._._" which is usually thought of today as SK or VA, with the space between letters removed. 73 (never plural!) de Jim, N2EY
Monday, January 18, 2010
Sunray is OC or officer in command.
Sunray Niner is CO or commanding officer.
31 is a callsign for a troop, platoon or section.
0B is control center.
Sunday, January 17, 2010
Saturday, January 16, 2010
Thursday, January 14, 2010
Tuesday, January 12, 2010
History Of Morse Code
Note that CWirc doesn't do any morse decoding : it simply transmits and receives morse code timing events. A standard IRC user on the same IRC channel you're transmitting morse on will only see coded lines when morse code is transmitted. Only other CWirc users can receive what you send.
Sunday, January 10, 2010
there is a place where you can get information or discuss about it and meet other ham radio friends.