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LF es MF
Reports from across the pond and other DX locations as far
as Tenneesee and Kansas using micro probe antennas are great for QRSS speeds but
not suitable for audio reception.
Take 160 metres for example where it is normal to work
world wide on cw but antennas in use are large verticals, inv L systems,
Rhombics and V beams, therefore to have any chance of receiving signals at audio
level on LF or MF large antennas of the calibre used on 160 metres are
necessary.
As well as TX at this QTH I also use large arrays for RX
and often hear signals from NA that would not be audible with small loops, micro
probes or ferrite sticks
Recently on 500 I was able to copy a W stn 579 but a DL
stn copied only on screen, when I asked what strength the signal was I got no
reply!!!!!!!!!!!!! using a micro probe antenna.
If a proper large antenna system is not used on LF es MF
then there is virtually NIL chance of an audio report from across the pond for
EU stns es vice versa
Back some years ago I had audio reports from the Boston
area but the antennas were proper wire arrays as used on 160 metres
Small hand held antennas are fine for High Power
BC strength signals but not for low power amateur signals to be
heard
No commercial LF/MF station would even consider an antenna
of the micro variety.
When I was in the business some years ago on LF/MF
Rhombics and V-Beams were the norm
de mal/g3kev
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