The Yaesu FT-817ND is advertised as “the world’s first self-contained, battery-powered, Multi-mode Portable Transceiver covering the HF, VHF, and UHF bands.” Although it can only put out a maximum of 5W it is very popular, particularly for Summit On The Air type activity.
When I was in school, I remember being told that it was possible to tune an FM radio do a free frequency low in the band and during a meteor storm you could ‘hear’ when meteors struck the atmosphere as the FM signal from distant radio stations would be reflected back down from the ionised meteor trail. This may have been possible as back then there were plenty of high powered FM stations from Eastern Europe using a lower portion of the spectrum and receivers often went below the 88.5 that is the limit on the dial now. But I never heard anything. Over the years as my interest in meteors and radio was peeked I looked into it again, but the number of stations to use was dwindling and there were few artificial sources that could produce an audible ping. Continue reading Detecting Meteors from radio reflections
Oh dear. It’s been over a couple of years since I’ve posted here!
Well to start up again here’s todays lunchtime project – a 6m antenna based on the design at http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=13156
Thanks to Keith for all the bits of wire!