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Well Ed,
These things don't just happen , that 500 mtr
wire did the job, just as the 750 feet to
the lighthouse sorted the gb4fpr CW contact with
vo1mrc on 502 , with 70 watts carrier power
or Gary's OP8 to VE on 136 ,
using a 40 ft parasol in the back garden ..
From the test we ran using OP16 ,
16 mins was too long for 500 , Im not 100%
convinced OP8 is , but it has put in some good
distances , the question is how much of
a 120 wspr tx is needed to
decode ? TA used to show only 1 or
3 syc points in the report , indicating events
where quite short ?
Ok only a short path , simultaneous
100% OP4 and OP8 , the lower s/n is the
longer format , not a big test , but
would point to a un equal qsb cycle
? 136 is a different story , the
longer qsb gives the opportunity to increase
the tx time , but unless the ' system' can
accommodate the time in terms of stability , then its
a law of diminishing returns
22:10 477 G0NBD de G4MDH Op4 139 mi -14 dB in Wootton
Bassett, SW Eng with 0.1w
22:10 477 G0NBD de G4MDH Op8 139
mi -14 dB in Wootton Bassett, SW Eng with 0.1w
22:06 477
G0NBD de G4MDH Op4 139 mi -13 dB in Wootton Bassett, SW Eng with 0.1w
22:02 477 G0NBD de G4MDH Op4 139 mi -12 dB in Wootton
Bassett, SW Eng with 0.1w
22:02 477 G0NBD de G4MDH Op8 139
mi -13 dB in Wootton Bassett, SW Eng with 0.1w
21:58 477
G0NBD de G4MDH Op4 139 mi -12 dB in Wootton Bassett, SW Eng with 0.1w
21:54 477 G0NBD de G4MDH Op8 139 mi -16 dB in Wootton
Bassett, SW Eng with 0.1w
21:54 477 G0NBD de G4MDH Op4 139
mi -14 dB in Wootton Bassett, SW Eng with 0.1w
G..
Sent: Sunday, February 17, 2013 9:23 PM
Subject: Re: LF: VK1DSH reception in France WSPR 2 on
630m
Hi G
Yes you were right. What I liked was decoding the
'trace in the sand', a bit more than 'just' and it was WSPR2, holds the distance
record over WSPR15 on 630m. Slip one in quick when the going is good.
472KHz
to the Far Flung Antipodes of Hobartly Tasmanial BAH! you are all MW
Dreamers.
Stanley Unwinese as used by himself to a Policeman, as an
excuse for driving the wrong way down a one way
street.
Eddie
On 17/02/2013 20:21, Graham wrote:
Any fool can repeat what others
say , but a lesser one might repeat the whole
text
''Problem is you cannot up the time
to down the s/n as you can on 136
I have seen MW UK/VK dx using carrier
detection just behind the gray line , that
would need a 100% carrier running for
may be 2 hours round that time , but
the window is not too big , may be , 15/ 30 mins
?
no chance for any qrss/data , just a trace in
the sand ? ''
Problem is you cannot up the time to
down the s/n as you can on 136 , >>> True ?
Its possible to observe signals from
VK on MF >>.. Ture ?
time window small >> ture ?
Special set up long carrier (rx) ? >>
ture ?
Observed signal very low out side data >>
true ?
so what particular point is worth
repeating concern ?
G..
Sent: Sunday, February 17, 2013 6:54 PM
Subject: RE: LF: VK1DSH reception in France WSPR 2 on
630m
Hi Stefan,
in 1923 wrote Paul Godley (call 2ZE): The amateur is
a fool: ignoring that something is
impossible, he makes it happen.
Maybe little
has changed since then ;-)
73, Rik ON7YD - OR7T
BTW i want to remember what was written here last
tuesday: Am 12.02.2013 00:30, schrieb Graham:
[...]
no chance for any qrss/data
, just a trace in the sand ?
G.. Your results demonstrate once again that it
is always worth to try what seems to be
impossible! :-) Am 17.02.2013 13:08, schrieb André Guyé:
What about
the use of long period of TXing, as WSPR15 or QRSS
? For this very long path, I think that the
opening duration time is too short for that use
? Well first it would be interesting
to get some informatiuons about Dale's TX
system. And if normal WSPR-2
decoded, then QRSS-10 should be possible as
well. WSPR-15 may take to long, the opening times
are quite short, as you say. But anyway, this opens
a new field for experiments. Of course it is worth
to transmit during the time that path is open! And it
is good that the WSPR "dial" frequency in VK is
different to ours, so we already have splitted
bands for RXing and TXing here in EU and VK.
Now,
as Dale said to me in a mail, one spot
is not sufficient to valid
that. Why
not? If you say that you didn't use
a WEBSDR or other tricks, and got a
decode. Where should the information in
the WSPR window come from, if not trough
the RF radiated in VK? Again, my
best congratulations to this impressing result!! 73,
Stefan7DK7FC
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