Re: ARRL Experimental License for 500 kHz Research by Radio Amateurs
Excerpted from: www.southgatearc.org/news/october2006/gb500kcs.htm
Special Event Station GB500KCS
SOS 100 years old
On November 3rd 1906 at the International Wireless Telegraph Convention held in Berlin, the final agreement was signed by 27 countries. This convention established 500kHz as a maritime radio frequency which subsequently became the international distress and calling frequency and remains so today in some parts of the world.
The convention (also) stated "ships in distress shall use the following signal ...---... repeated at brief intervals." SOS came into common use on 1st July 1908 but some Marconi manned ships continued to use CQD often as well as SOS. The Titanic was not, as commonly supposed, the first ship to use SOS.
The Radio Officers' Association are launching their campaign to have 500kHz recognised as a heritage frequency with the callsign GB500KCS on 3rd November from the Lizard Wireless station, and on 4th November from the Poldhu Marconi Centre.
In addition, on 2nd, 3rd and 4th November a special station will be activated by members of INORC with the callsign IY1SP/500KCS from La Spezia (Mount Parodi), where Marconi did his first experiments with ships when he sent messages to Italian navy ships.
1695 KHz beacon heard in Southern Maryland
Posted by Doug Smith on October 06, 2006 at 13:58:04.
24 hours a day I hear an S9 signal on 1695 kHz. No MedFer type ID just a dash heard every five to ten seconds. Not sure if it's a fishing net or MedFer beacon? I'm located on the Chesapeake Bay at Plum Point, directly across the Bay from the mouth of the Choptank River. Anyone esle in Southern Maryland know where/what this is? mo beacon 189.5khz heard in arkansas
Posted by PAUL DAULTON on October 07, 2006 at 10:10:03.
I COPIED BEACON MO THIS MORNING 10/07/06 FROM ABOUT 0400 T0 0700.
DISTANCE ABOUT 225 MILES. REC EQUIPMENT TS50 ,75METER DIPOLE. AND ARGO
SOFTWARE. I AM ABOUT 14 MILES NORTH OF LITTLE ROCK AR.
BEACON HUNTING SEASON HAS BEGUN.
PAUL DAULTON K5WMS 600 Meter amateur experimental beacon heard
Posted by Brock Whaley on October 10, 2006 at 20:29:16.
600 Meter amateur experimental beacon heard. Beacon and "V" marker from WD2XSH-10 in North Carolina (W4DEX) in slow CW loud and clear at 0100 UTC on Oct. 11 UTC on 508 kHz. Slow CW. Very loud on longwire and tuner. Also clear on built in ferrite antenna in the Sony 2010. WD2XSH/10 Very Strong in Maryland
Brock Whaley
Lilburn, GA
DXLD
Posted by Larry WB3ANQ on October 11, 2006 at 10:16:43.
Hi Dex,
At 10-11-2006 0347 UTC
Very strong signal here in Maryland FM19rc!!
Equipment used RFSpace SDR-14 with Wellbrook ALA100 Loop antenna.
As usual a very good job Dex!
Sent captures and a wav file of your WD2XSH/10 transmission on 512 KHz! to your email address.
73 Larry
--
Larry Putman WB3ANQ FM19rc
www.vlf.it update
Posted by Renato Romero on October 11, 2006 at 16:08:56.
A new article titled: "LARGE INDUCTION COIL for ULF monitoring" By M. Bruna
has been updated on www.vlf.it.
73, ik1qfk Renato Romero
Re: 1695 KHz beacon heard in Southern Maryland
Posted by Larry WB3ANQ on October 13, 2006 at 09:30:28.
In reply to 1695 KHz beacon heard in Southern Maryland posted by Doug Smith on October 06, 2006
Doug,
I am located 35.7 miles North of Plum Point using a Ten Tec RX340 with Wellbrook K9AY and ALA100 antennas. I have not heard any signals on or around 1695 KHz.
Must be something very close to you.
73 Larry WB3ANQ VLF Radio Engineering book
Posted by Paul Jorgenson on October 13, 2006 at 14:47:19.
I am looking for a copy of "VLF Radio Engineering" by A.D. Watt. If anyone has a spare copy or knows of one, please email me at ke7hr@cox.net. "EAR" qsy again
Posted by J.B. Weazle McCreath on October 15, 2006 at 16:35:15.
In reply to Beacon EAR new frequency posted by J.B. Weazle McCreath on September 24, 2006
Lowfer beacon "EAR" is now on 188.825 +/- a tad.
Re: WMG on 184.325 kiloHertz
Posted by Bill Bradrick on October 17, 2006 at 13:01:40.
In reply to WMG on 184.325 kiloHertz posted by Bill Bradrick on September 14, 2006
WMG changing to QRSS30 effectively immediately. Frequency precision has been improved. 1 Watt 24/7. Longwave Net Thursday Nights 0900 EDT 3814
Winter mornings have been shown to have 40dB less atmospheric noise than summer afternoons on 184.325 kHz.
-bill
Posted by Warren K2ORS/WD2XGJ/WD2XSH/23 on October 19, 2006 at 20:01:19.
Just a reminder that the Longwave net meets Thursday evening at 9 PM Eastern look for us at 3814, if that's busy work down to 3810 kHz or so.
CU on 75!
73 K2ORS/WD2XGJ/WD2XSH/23
http://www.w4dex.com/wd2xgj.htm
potrzebie