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ISS scatter QSO PDF Print E-mail

International Space Station Hello All,

Triggered by Peter SM2CEW's tries to complete a QSO by using the ISS as a reflector Frank DH7FB and I decided to try that as well. From Peter's experience (and also Frank's when SWLing Peter's tries) we believed it would be worthwile considering BPSK63 as this would enable us to exchange all information within few seconds only (using the EME report and QSO rules).

However with the first tries on 8 December we quickly had to realise the amazingly quickly changing large doppler makes use of this mode impossible and we returned back to good old CW since this is also copyable at such a situation when you are not 100% tuned on the signal.

The second try today Sunday 9 December at ISS orbit 51845 starting with a common window at 1626Z we copied signals at elevations of 20 degrees and within a minute exchanged all data. Signal reports were about S3...S5 (DF2ZC running only 300 watts out). It was a tough task to follow the quick doppler changes and also adjust elevation and azimuth rotators. Two hands is at least one too few...

That was a thrill! And now we are celebrating...

And we will try more QSOs the coming days.

btw http://www.n2yo.com/ gives a nice live google earth graphics display of ISS and other satellites.

vy 73 Bernd DF2ZC (JO30RN)
www.df2zc.de
 
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XR5L - Isla Santa Maria, SA-070
  QRV between Jan 28 - Feb 4. QSL via CE6AMN. *Website above       


ARRL Amateur Radio News
The National Association of Amateur Radio

ARRL Headquarters Closed for Thanksgiving Holidays
ARRL Headquarters will be closed November 27 and 28 in observance of Thanksgiving. There will be no W1AW bulletins or code practice transmissions those days. The ARRL Letter will be published on Wednesday, November 26, but there will be no ARRL Audio News on Friday, November 28. ARRL Headquarters will reopen Monday, December 1 at 8 AM Eastern Standard Time. We wish everyone a safe and bountiful Thanksgiving holiday.

Global Emergency Network Marks Record
The Global ALE High Frequency Network (HFN) -- an international Amateur Radio Service organization of ham operators dedicated to emergency/relief radio communications -- has become the first network to operate continuously for more than 500 days on all international Amateur Radio shortwave bands simultaneously. According to HFN International ALE Coordinator Bonnie Crystal, KQ6XA, the main purpose of the Network is to provide efficient emergency and disaster relief communications to remote areas of the world. "Beginning with a core group of six North American radio operators in June 2007, HFN rapidly expanded to cover large areas of the planet with 24/7 digital communications," she said."HFN was designed to be an open framework for global Amateur Radio emergency services to interoperate on HF using the Automatic Link Establishment (ALE) system." Relying on ionospheric radio communications, interconnected HFN base stations scan the radio bands every 10 seconds, from 3.5 MHz-28.0 MHz. Through this Net, Crystal said, ham operators stay connected with each other at all hours of the day or night in any mode of operation, and can send Internet e-mail or cell phone mobile text messages from the field."

Section Manager Election Results Announced
There were nine Section Manager races this fall, four of which saw no opposition. Election ballots were counted and verified on Tuesday, November 18 at ARRL Headquarters for the remaining five races. Terms of office for these new Section Managers will begin on January 1, 2009.


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