So wspr is totally dependent on the Receive operator ? and
a vy quiet location. I thought the whole idea was to overcome this
problem
Mal..
well , basically as long as the signal
to noise ratio is better than the minimum ,
then it should decode , so where
a high field strength will decode in a
high noise area ... a low signal
will decode in a low one
........ there is no 'real' lower
limit other than the noise floor of the equipment
/ location , setting the minimum 'field strength'
needed to reach the lower limit [ if that makes
sense ]
On from that comes slightly more signal processing
and data processing etc , wspr is beacon , not a
qso mode so time is a problem with the
web-clock , but that only reduces the CPU loading
, not a problem these days , but with fec
and other additions , s/n can be lowered
With the 750 ft long wire and 600 ft loop
at gb4fpr , Andys g4jnt beacon cw/psk
was S7 during the day , so yes , big
Ae's do work, but the fort is surrounded
with sea water and a long way from the land
...
my qth was ok till bbc radio Mersey-wide
added more feeds and upped the power , now
just a background of much and clatter if it
rains .....always web-sdr ...... no commercial set
up has the RX in town !
G...
Sent: Monday, February 18, 2013 6:23 PM
Subject: Re: LF: Re: POOR ANTENNAS
Graham
It is all inter related. But a few fundamentals are
necessary. If it is so bad with for instance a 24 dB disadvantage I would MOVE
or pack it in.
Too many excuses are used, the amateur has enough space
for a reasonable antenna but says he is concerned about what the neighbours
might think. I have heard this so many times. How much space does a 60 ft
vertical take up, less than half a sq metre.
Surely when a radio amateur is looking for a property he
has antennas in mind and looks for the largest real estate he can
afford.
especially if interested in MF or LF.
So wspr is totally dependent on the Receive operator ? and
a vy quiet location. I thought the whole idea was to overcome this
problem
It is not working, as I said looking at the wspr database,
some stns are not even aware that others are active because of lack of signal
for what ever reason.
mal/g3kev
----- Original Message -----
Sent: Monday, February 18, 2013 5:01
PM
Subject: Re: LF: Re: POOR ANTENNAS
May be , may be not Mal
The system is reading the s/n at the
Rx and not the field strength
........ depends on the local noise level ,
rst 159 or 599 , carrier still
S9 , 1= qrm 5= no qrm
Sent: Monday, February 18, 2013 4:49 PM
Subject: LF: Re: POOR ANTENNAS
Example
I am receiving PA3EGO + 2dB another UK stn is showing
-22 at a shorter distance. A difference of 24 dB
and this station says he is an Expert!!
----- Original Message -----
Sent: Monday, February 18, 2013 4:42
PM
Subject: LF: POOR ANTENNAS
MF
One thing the wspr DB shows is how poor some
Receivers/Antennas are comparing like with like approximately same distances
from Transmitter.
g3kev
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