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Dave,
I think the sharp cut-off is the
only elegant part of it ? , using spec-lab , I can see a
drop of 10 to 15 dB over 502 KHz .. suppose its a good place
to try data modes out .. interestingly , wspr is not producing
any false decodes and the WD signal decoded twice
, which I think is actually times 4 decodes , round 2400
z , but may be the s/n distorted by the noise floor increase ?
my 100 watts crossed once , but gave a better s/n
There may be a possibility , that you
are inside the skip range and out of the ground
75/100 mile range ..?
I see a couple of S points on the
meter as I tune over the noise ..marvellous .. and the pulse
modulated Christmas lights are yet to come ......
hum-bug
73-G.
Sent: Saturday, November 06, 2010 12:43 PM
Subject: RE: LF: WD2XSH/17 on WSPR
Hi,
Graham.
It's
probably contributing to the overall high level of crud at this QTH, but I'm not
aware of exactly how much it is adding.
I'll
do some tests over the week-end and try to measure the contribution. From what
I've seen on the various grabbers, it seems to have a fairly well-defined H F
cut-off, so it should be easy to identify where the wideband datalink noise ends
and the usual hash continues.
Cheers
Dave
Dave,
Do you see the wide band noise
at + 10 to +15 dB over the background noise ?
G..
Sent: Saturday, November 06, 2010 8:23 AM
Subject: LF: WD2XSH/17 on WSPR
I
snagged WD2XSH/17 last night on WSPR. This is pretty good going for this QTH,
as I have a very high local noise level on 500 kHz.
| 2010-11-06 04:06 | WD2XSH/17 | 0.501091 | -27 | 0 | FN42pb | +30 | 1.000 | G3WCB | IO91rm | 5233 | 3252
73,
Dave G3WCB IO91RM nr Windsor,
S.E.England
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