The Bev-Flex 4 antenna system by JK Antennas easily goes down to 630M I use
it regularly to receive LW broadcast stations from Europe down to 153 kHz.
It is also interesting to note that many of the 75 ohm cable splitters will
work down in that range as well even though they are specified only
Here is a link to an appropriate transformer design:
http://www.aytechnologies.com/TechData/9-to-1_XFMR.htm
This design will work well at 630m. It's a lot like the binocular core
design with 73 material.
Gary, K9AY
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In edition 2 ON4UN's Low-Band DXing page 11-22 he provides a hint of
using the MFJ 931 artificial ground
and states that it can be a tool for detuning a tower. Is the use of
this device the same as the W8JI sectionalizing method
of a structure, i.e. one tunes for Maximum Current on the 931
