31 Aug 2010

Solar activity progress

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See http://solarscience.msfc.nasa.gov/images/ssn_predict_l.gif Sunspot cycle 24 does, at last, show signs of gathering some momentum. Des...
1 comment:

LF/MF antenna change

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Today I changed the earth electrode antenna by raising the height of the connecting wires to form a (part) loop in the air as well as in th...
29 Aug 2010

136kHz WSPR - first report received

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Well, it is no great DX at 3km away in the next village, but I've now received my first WSPR report on 136kHz from G6ALB . He gave me -2...
1 comment:
28 Aug 2010

WSPRing on 137.5kHz at last

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136kHz TX transverter Having got the TX part of the 136kHz transverter going today I am, for the first time, putting out a WSPR signal on...
27 Aug 2010

136kHz TX transverter almost ready (5W from PA)

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Today I should complete the first breadboard version of my QRP TX transverter for 136kHz. It mixes down from 10MHz in a similar arrangement ...
1 comment:
25 Aug 2010

Another report on the 136kHz QRPp beacon

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G3XIZ has sent me a nice screenshot of my 10uW ERP 136kHz beacon as received in Biggleswade, about 35km away. Chris believes I'd be per...
24 Aug 2010

62km with QRPp and earth electrodes on 137.675kHz

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Today I ran an earth electrode transmission test with Mike G3XDV in Welwyn Garden City 62km away. I put my QRSS3 8-10uW ERP beacon on and ...
22 Aug 2010

136kHz RX loop calibration

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Today I attempted to calibrate my 136kHz 80cm loop antenna by measuring the signal strength of DCF39 in Germany on 138.83kHz. I'm told ...
17 Aug 2010

Chinese SSB and CW transceiver kits/built

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YouKits of China is advertising a new 6 band HF SSB transceiver, the TJ6A that is available both in kit form and ready built. Prices look ...
8 comments:

Pakistan Floods

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This map appeared on the Oxfam site today and gives a graphic indication of how much land is affected by the floods in Pakistan when overlai...