28 Oct 2010

First "Dreamers Band" UK test next week

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As is required by my NoV, I asked the Met Office for permission to transmit in the 8.7 - 9.1kHz band next week Tuesday to Friday 0800-1800 G...
1 comment:
27 Oct 2010

6 countries on 500kHz tonight

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Another good night on 500kHz WSPR with several more reports from Finland (OH1LSQ) as well as a report from Norway (LA3EQ) and several from n...
1 comment:

Protecting power grids from solar storms

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NASA Science News reports: "Every hundred years or so, a solar storm comes along so potent it fills the skies of Earth with blood-re...
1 comment:
26 Oct 2010

More DX reports on 500kHz

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Log from early evening Oct 26th 2010 (500kHz QRPp WSPR) This evening, the QRP 500kHz signal from the small vertical wire loop is doing we...

Stable, simple, stand-alone, 8.970kHz source?

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What do people think is the simplest way of generating a stable 8.970kHz (kilohertz) frequency that does not require a PC when running? I th...
4 comments:

Vertical loop versus earth electrodes antenna

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Just done an interesting test comparing my vertical wire loop with an earth electrode antenna. I removed the lower part of the loop and conn...
25 Oct 2010

Amateur VLF update: reception in 8 countries + 1310km DX!

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DK7FC's summary of reports on Oct 23rd 2010 DK7FC has now summarised last weekend's test results on VLF (see table attached). Hi...

136kHz ERP

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A fairly easy way to increase my ERP on 137.5kHz WSPR is to up the supply voltage to the IRF510 PA. Using a 20-24V supply I was able to get ...
24 Oct 2010

DK7FC's VLF tests a great success

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Stefan's latest VLF kite antenna transmissions at 8.97kHz and even lower frequencies were a great success yesterday with reception as fa...
23 Oct 2010

M0BMU receiving DK7FC's 8.97kHz signal 10dB S/N

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Jim reports that Stefan's DK7FC 's 8.97kHz test signal is visible at 10dB S/N in Tring UK this morning. He is also visible on other ...