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
