Monday, March 03, 2014

Events in Ukraine

I have just got off the air after making several  contactsintoRussia and Ukraine on 10m PSK31. Ham radio transcends political boundaries and engenders friendships betweenpeople of all nations. All politicians could learn from it. My thoughts today are particularly with my radio friends living in Ukraine I hope that peace and normality are restored soon

до свидания!


Saturday, February 15, 2014

SSN data file goes AWOL

I've not updated the VOAProp file ssn.txt for a while as some irritating health issues kept on getting in the way. I thought I would have a try today butit seems the NOAA data file Iused to update it from  has moved to a new address. Does anyone know where it has gone to?

Sunday, January 26, 2014

Tracking wildlife

I watching a wildlife programme on TV the other day which had a feature about urban foxes. The naturalists  had fitted radio collars to some of the foxes and were able to track them over a wide area.One fox went off on a trek that lasted a couple of weeks and covered a distance of several kilometres.

In another programme radios have been attached to larger birds such as geese and ospreys to track their migration paths.
I wonder what frequency is used? One of the maturalists in the urban fox project seemed to be trying to DF a fox using what looked auspiciouslylike a 3 element 2m Yagi. I've seen similar antennas used o locate larger animals in Africa.

I would love to know what technology they use. My Kenwood TH-D7E APRS radio - despite being too big to use as a tracker for anythimg much smaller than an elephant -  can run for only a few hours with the GPS enbled and the power set to a sufficient level to enable tracking over a reasonable distance.using a less than optimal transmitting ntenna.

Saturday, January 18, 2014

Across the pond on 10m with 200mW

WSPR never loses its ability to astound. Today I've been WSPRing on 10m, still with 0.2W. My signal was decoded by 5 different Stateside stations.

TimestampCallMHzSNRDriftGridPwrReporterRGridkmaz
 2014-01-18 14:26  G4ILO  28.126105  -25  0  IO84hp  0.02  KZ8C  EM88pm  5973  287 
 2014-01-18 14:36  G4ILO  28.126145  -22  1  IO84hp  0.02  KB9PVH  EN53oi  5959  296 
 2014-01-18 14:44  G4ILO  28.126131  -16  0  IO84hp  0.02  VE3SWS  FN06ge  5201  293 
 2014-01-18 15:18  G4ILO  28.126107  -9  0  IO84hp  0.02  N2NOM  FN22bg  5267  286 
 2014-01-18 15:38  G4ILO  28.126104  -23  0  IO84hp  0.02  K9AN  EN50wc  6175  293

Monday, January 13, 2014

More WSPR with 20mW

I've been WSPRing on 30m today, still with a power of 0.2W. I think WSPR is more interesting when you use low power: it's always interesting to see how far you can get.

20mW is not the lowest power you can use, though, it's just the lowest power the K3 will comfortably produce. (You can set the output power to 0.0W but I'm not sure how accurately the rig will maintain the power at such a low level - something to check.

Today my 0,02W into the MFJ magnetic loop in my attic was received by 30 different stations. Here's the list:

TimestampCallMHzSNRDriftGridPwrReporterRGridkmaz
 2014-01-13 11:52  G4ILO  10.140243  -11  0  IO84hp  0.02  ON7KO  JO21ce  637  124 
 2014-01-13 11:52  G4ILO  10.140209  -23  0  IO84hp  0.02  DL8HAF/P  JO53dm  899  92 
 2014-01-13 12:32  G4ILO  10.140206  -26  0  IO84hp  0.02  DK6UG  JN49cm  973  121 
 2014-01-13 12:54  G4ILO  10.140217  -22  0  IO84hp  0.02  DC5EO  JO31ed  760  117 
 2014-01-13 12:54  G4ILO  10.140210  -18  0  IO84hp  0.02  G8CRB  JO02bf  355  138 
 2014-01-13 13:18  G4ILO  10.140195  -19  1  IO84hp  0.02  G0GSJ  IO84jc  61  170 
 2014-01-13 14:20  G4ILO  10.140199  -19  0  IO84hp  0.02  G4ILR  JO02pp  379  124 
 2014-01-13 14:20  G4ILO  10.140224  -29  0  IO84hp  0.02  M0BLP  JO02ad  359  139 
 2014-01-13 14:30  G4ILO  10.140210  -20  0  IO84hp  0.02  OH8GKP  KP24rt  1945  43 
 2014-01-13 14:30  G4ILO  10.140203  -19  0  IO84hp  0.02  GM4SFW  IO77sn  331  349 
 2014-01-13 14:30  G4ILO  10.140199  -11  2  IO84hp  0.02  OH3HTI  KP21ag  1760  54 
 2014-01-13 14:30  G4ILO  10.140182  -13  0  IO84hp  0.02  LA5GOA  JO29oi  737  41 
 2014-01-13 14:38  G4ILO  10.140197  -23  0  IO84hp  0.02  OZ7IT  JO65df  1001  80 
 2014-01-13 14:38  G4ILO  10.140194  -13  0  IO84hp  0.02  SA6BSS  JO68  1084  60 
 2014-01-13 14:48  G4ILO  10.140189  -21  0  IO84hp  0.02  SM6WZI  JO67mp  1067  65 
 2014-01-13 14:56  G4ILO  10.140208  -21  0  IO84hp  0.02  DC8SE  JN48xi  1155  122 
 2014-01-13 14:56  G4ILO  10.140180  -7  0  IO84hp  0.02  ON7KB  JO21ei  634  122 
 2014-01-13 15:04  G4ILO  10.140204  -11  0  IO84hp  0.02  DK4TJ  JO31fc  768  117 
 2014-01-13 15:04  G4ILO  10.140236  -25  0  IO84hp  0.02  PA1GSJ  JO22da  586  117 
 2014-01-13 15:14  G4ILO  10.140238  -21  0  IO84hp  0.02  DL1WER  JN58dd  1189  122 
 2014-01-13 15:24  G4ILO  10.140195  -13  0  IO84hp  0.02  DL1KCQ  JO33uc  746  99 
 2014-01-13 15:36  G4ILO  10.140188  -25  -1  IO84hp  0.02  M5LMY  IO91oi  405  154 
 2014-01-13 15:36  G4ILO  10.140197  -12  0  IO84hp  0.02  PI4THT  JO32kf  729  107 
 2014-01-13 15:36  G4ILO  10.140196  -15  0  IO84hp  0.02  LA9JO  JP99gb  1949  26 
 2014-01-13 15:36  G4ILO  10.140191  -20  0  IO84hp  0.02  SM0FGT  JO89xg  1384  60 
 2014-01-13 15:36  G4ILO  10.140182  -12  0  IO84hp  0.02  LA5GOA/RX2  JO29oi  737  41 
 2014-01-13 15:46  G4ILO  10.140222  -12  0  IO84hp  0.02  DC0DX  JO31lk  776  113 
 2014-01-13 15:46  G4ILO  10.140215  -17  0  IO84hp  0.02  DC4LC  JN48np  1088  123 
 2014-01-13 16:22  G4ILO  10.140208  -17  0  IO84hp  0.02  DK4LA  JO54ae  868  88 
 2014-01-13 16:48  G4ILO  10.140196  -23  0  IO84hp  0.02  HB9FGQ  JN36kk  1163  137