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30m QRSS Junkbox Beacon

Updated: 08-Sep-06

Transmission details:

QRP360mW
QRG10,140,060
QRV23-Feb-06 1145 UT until 01-Sep-06 2000 UT
QTHIO91VH, 15 miles south of London, UK
AntAttic Longwire
MsgFSK, 3Hz separation, squarewave with 25 second cycle

Junkbox beacon construction:

This simple 30m QRSS beacon is built entirely out of junkbox parts, the only component purchased specifically for this project was the 10,140kHz crystal. The oscillator is in a polysytrene box made using pieces of packaging material and rubber bands, for protection from short-term temperature fluctuations such as drafts.

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Antenna and Attic installation:

I use a full size half-wave dipole (14.2m) in my attic, taped to the roof at about 4 feet (1.3m) above the attic floor. At its centre is an 18-turn balun wound on a T130-2 toroid. The balun connects directly to the transmitter output using 5m of coaxial cable.

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Reception map:

This map shows the worldwide reception of the G0UPL junk box beacon. Not all stations are shown on the map since some are geographically close to each other so overlap on the map. A full list of receiving stations is listed below.

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Reports:

On this page you can view at least one reception report from each station who copied the beacon. I have received so many screenshots by now that I cannot include every single one in this page! However I have shown all the first reports, and have a new page showing interesting and unusual ones.

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30m QRSS Receiver:

Don't miss this related project: a simple 2-chip 30m QRSS crystal controlled direct conversion receiver powered with +5V from a computer's USB port!

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List of receiving stations

Currently reports have been received from 45 stations as follows:

CallsignNameLocatorDistanceLocation1st ReportNotes
1.VK6DIDavid IseleOF88CDMount Helena, Australia28-Feb-06
2.WB3ANQLarry PutmanFM19RCPasadena, Maryland, USA28-Feb-06
3.DL6JANChristian ProehlJO60KUChemnitz, Germany01-Mar-06
4.ZL4OLMike McAleveyRE54GGWaitati, New Zealand01-Mar-06
5.ON5SLPierre01-Mar-06
6.LA5VNASteinar AaneslandAas, Norway01-Mar-06
7.ON4LPErik PlatteeuwJO11OEBrugge, Belgium02-Mar-06
8.I1DFSPaoloJN54ACItaly03-Mar-06
9.LA9BEATjærand BaugeJO29OGÅkrehamn, Norway04-Mar-06
10.IW0HKAndrea BorgninoJN61FVRome, Italy05-Mar-06
11.IOSKKAlexRome, Italy14-Mar-06
12.OE5EEPHeinz SchnaitSeewalchen, Austria16-Mar-06
13.I0CGGiulianoRieti, Italy30-Mar-0680km East of Rome
14.IK4GBUValeri BianchiCasalecchio di Reno, Italy31-Mar-06
15.G3VYZLes ThompsonIO95FBTyne & Wear, UK10-Apr-06
16.PA1SDBPeter KnolJO33KHAppingedam, Netherlands10-Apr-06
17.IK4IDPAndrea TommasiJN54QLCastenaso, Italy20-Apr-06
18.IV3XYMAlessandro VitielloJN65SURonchi dei Legionari, Italy21-Apr-06
19.Giuseppe BiniItaly21-Apr-06
20.Giuseppe BimbiItaly21-Apr-06
21.IK2JETAlberto ScanziLonato, Italy22-Apr-06
22.G3GKIVic KershawScarborough, Yorkshire, UK23-Apr-06
23.IZ1KGLGiulioTorino, Italy23-Apr-06
24.Andrea LawendelMilan, Italy23-Apr-06
25.I2NDTClaudio MaregaJN45TQItaly24-Apr-06
26.DJ2LFWalter StaubachJN59NOErlangen, Germany26-Apr-06
27.G0UPLHans SummersIO91VH0.005kmKingswood, Surrey, UK29-Apr-06
28.IZ2KQPEnricoMese, Italy29-Apr-06
29.DK5NAMichael PetersJO42BHGermany30-Apr-06
30.IK1ZYWPaolo CraveroJN35TCItaly04-May-06
31.ON6RRStaf RansBelgium07-May-06
32.Hartmut WolffJO52HPGermany07-May-06
33.IW3SGTAlessandro KosoveuJN65VPTrieste, NE Italy08-May-06
34.IZ2EEQMatteoItaly09-May-06
35.SM6LKMJohan BodinSweden11-May-06
36.M0AYFDes KostrycaIO93OJGainsborough, UK20-May-06
37.G6AVKColin ThomsonJO01HO66kmRayleigh, UK23-May-06
38.G4KKIBill StevensonIO83TMSwinton, Manchester, UK23-May-06
39.IN3KLQGiulianoJN56RGItaly15-Jun-06
40.G7IZUAndrew SmithIO70WKPlymouth, UK29-Jun-06
41.2E0KNJJohn KnottWells, Somerset, UK09-Jul-06
42.IZ8GFQQuirino TirelliJN71JDBenevento, Italy21-Jul-06
43.I2PHDAlberto di BeneJN45SLCasirate, Italy24-Jul-06
44.N3TFMTodd PutmanEN72FHKalamazoo, Michigan, USA24-Jul-06
45.AA4XXPaul StroudFM05QRRaleigh, NC, USA30-Aug-06

Two maps from from Larry WB3ANQ showing the path between G0UPL and Todd N3TFM: (click images for the full size versions).




QRSS WEBSITES

Knights webpages:

VK6DI David http://www.users.on.net/~davroz/vk6di/index.html
WB3ANQ Larry http://www.wb3anq.com
DL6JAN Christian http://www.proehl-elektronik.de/qrss/qrss_e.html
IW0HK Andrea http://mediasuk.org/iw0hk/qrss2.htm
I0SKK Alex http://www.eco-lavoro.com/i0skk/Beacon.htm
OE5EEP Heinz http://members.aon.at/oe5eep/QRSS.html
AK0B Stan http://www.ak0b.com/
G6AVK Colin http://www.g6avk.demon.co.uk/qrss.html
G7IZU Andy http://www.tvcomm.co.uk/radio/live_b.html
I2PHD Alberto http://www.weaksignals.com
G4OEP Andy http://g4oep.atspace.com/qrss/qrss.htm
M0AYF Des http://www.qrss.thersgb.net/
IK0VVE Max http://www.radionatura.it/ik0vve2/mept1.aspx

QRSS Information and QRSS Knights mailing list:

QRSS Knights mailing list http://mail.cnts.be/mailman/listinfo/knightsqrss_cnts.be
QRSS Knights website http://www.cnts.be/knights_qrss/

QRSS Software:

ARGO: the most popular QRSS viewer program http://digilander.libero.it/i2phd/

Propagation pages:

Digisonde - current propagation http://digisonde.oma.be/cgi-bin/latest.exe
Propagation theory pages by G4NSJ http://www.g4nsj.co.uk/which.shtml
Earth Viewer www.fourmilab.ch/cgi-bin/uncgi/Earth
Freeware propagation prediction program www.its.bldrdoc.gov/elbert/pc_hf/hfwin32.html

Construction aids:

Mini ring core calculator http://www.dl5swb.de/html/mini_ring_core_calculator.htm
GQRP club guide to harmonic filters www.gqrp.com

Components:

DB6NT crystal heater (extra stability for your beacon!) http://www.kuhne-electronic.de/english/special/crystalheater.htm

Peter DL6NL has a QRSS frequency HC49 crystals for sale. He has the following frequencies: 7.000, 7.020, 10.137 and 10.140. Price is 5 Euros for three crystals, including shipping. Email him at his AOL address:

Beacon keyers:

http://k1el.tripod.com/
http://www.expandedspectrumsystems.com/
http://www.proehl-elektronik.de/start.html