1 Sep 2009

More on the active LF antenna

Yesterday I used a PA0RDT designed active antenna (but with MPF102 and 2N3904 devices and a 9V supply from a PP3 battery)to listen successfully on both 500kHz and 136kHz. This is a bit better picture of the antenna. Although it is recommended it is mounted well in the clear and away from the house (feeding the power up the coax), I just stuck mine onto my double glazed window - it still worked and heard stations on both LF bands. This is the ENTIRE antenna - no wire is needed down the garden.

In the last few days SM6BHZ has been heard in central Bejing China using a version of this antenna.

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