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The trouble is that these misleading figures get
published and then some think that the world can be worked using uWatts on LF
when in fact it CANNOT
Your figures quoted earlier then modified by others
all conflict depending on speculation or guesswork, everyone has a go. The
outcome is usually as I have previously stated arrive at a figure then it could
be plus/minus by up to 10 dB which is a lot, this renders the experiment
meaningless.
My argument is not a criticism of individuals and
what they do but the misleading figures and calculations produced that
could misguide others.
QRP merchants like to get reports from well
equipped stations with proper elevated antennas, there is little or no chance of
them hearing each other,
In all walks of life there is
disagreement, scientist for example.
Building a suitable amplifier to generate
1W erp on 137 Kcs or 10W erp on 500 Kcs would be preferable to
watching TV.
I am ready both RX and TX on CW for 8.97 Kcs and
would immediately build a suitable rf amplifier if the band becomes available
for TX in the UK
I can guarantee you will hear me if you use an
elevated antenna suitable for purpose.
G3KEV
----- Original Message -----
Sent: Wednesday, August 11, 2010 6:44
PM
Subject: Re: LF: ERP DISTANCE ETC
Mal,
Thanks again for the great encouragement. Would you
prefer we just watched TV instead and gave up the hobby?
Here, I've
no interest in running high power on any band, rather I want to
see what I can achieve with low power, simple rigs and simple antennas. If
this results in my best DX being only 20-30km then so be it.
As for
your comment on earth antennas, I beg to differ. There is still a great
deal to be explored and understood in this area on all bands from sub-9kHz
to at least 500kHz.
73s
Roger G3XBM
On 11 August 2010 18:24, mal hamilton <[email protected]>
wrote:
Lots of figures appearing on here at present
are guesswork and misleading. This has happened in the past trying to guess
who was running what power, then the conclusion was + or - 6 to 10 dB wich
is nonsense ie could be !W or 4W or !W or 10W. For those complaining
about no room for large antennas, use the best elevated antenna you can get
up and run several K/Watts to achieve the required ERP.
Earth antennas have also been tested in the
past are only useful for Cave radio communications, the wheel keeps being
reinvented here on LF.
G3KEV
--
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.youtube.com/user/g3xbm
G3XBM GQRP
1678 ISWL G11088
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