Message-ID: <008301ccc97c$51d9fcf0$0401a8c0@xphd97xgq27nyf>
From: "mal hamilton" <g3kevmal@talktalk.net>
To: "rsgb" <rsgb_lf_group@blacksheep.org>
Date: Mon, 2 Jan 2012 18:28:26 -0000
MIME-Version: 1.0
Subject: LF: Antennas
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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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<DIV><FONT face=3DArial>LF es MF</FONT></DIV>
<DIV><FONT face=3DArial>Reports from across the pond and other DX =
locations as far=20
as Tenneesee and Kansas using micro probe antennas are great for QRSS =
speeds but=20
not suitable for audio reception.</FONT></DIV>
<DIV><FONT face=3DArial>Take 160 metres for example where it is normal =
to work=20
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=20
level on LF or MF large antennas of the calibre used on 160 metres are=20
necessary.</FONT></DIV>
<DIV><FONT face=3DArial>As well as TX at this QTH I also use large =
arrays for RX=20
and often hear signals from NA that would not be audible with small =
loops, micro=20
probes or ferrite sticks</FONT></DIV>
<DIV><FONT face=3DArial>Recently on 500 I was able to copy a W stn 579 =
but a DL=20
stn copied only on screen, when I asked what strength the signal was I =
got no=20
reply!!!!!!!!!!!!! using a micro probe antenna.</FONT></DIV>
<DIV><FONT face=3DArial>If a proper large antenna system is not used on =
LF es MF=20
then there is virtually NIL chance of an audio report from across the =
pond for=20
EU stns es vice versa</FONT></DIV>
<DIV><FONT face=3DArial>Back some years ago I had audio reports from the =
Boston=20
area but the antennas were proper wire arrays as used on 160 =
metres</FONT></DIV>
<DIV><FONT face=3DArial>Small hand held antennas are fine for&nbsp;High =
Power=20
&nbsp;BC strength signals but not for low power amateur signals to be=20
heard</FONT></DIV>
<DIV><FONT face=3DArial>No commercial LF/MF station would even consider =
an antenna=20
of the micro variety.</FONT></DIV>
<DIV><FONT face=3DArial>When I was in the business some years ago on =
LF/MF=20
Rhombics and V-Beams were the norm</FONT></DIV>
<DIV><FONT face=3DArial>de mal/g3kev</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
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