Hi Mal,
OPERA - I tried it on RX successfully on 136k the other night and if it is indeed several dB better than WSPR in the Op31 mode it will certainly of interest in earth-mode, although I find QRSS30 the best so far.
Currently busy getting gear going on 481THz where the VLF weak signal techniques will be useful for cloud and troposcatter. Failed to copy GB3CAM 481THz beacon at 32km tonight on first try. Back to the drawing board.
73s Roger G3XBM
-- Via my iPod Touch 4g --
ps
Roger what do you think of OPERA ? any good underground ?
G3XBM
----- Original Message -----
Sent: Monday, January 09, 2012 3:32
PM
Subject: Re: LF: CPU and QRSS
It seems an attractive mode ie eats up the CPU, needs
Code/Decode and is not as good as QRSS 3
I will avoid it and continue with CW and
QRSS
Attractive !! I am joking
de g3kev
----- Original Message -----
Sent: Monday, January 09, 2012 2:23
PM
Subject: Re: LF: CPU and QRSS
Laurence,
On my old LF grabber PC it is easily
possible to run 6 SL instances without problems. But, if Opera bahaves about
like ROS regarding CPU load (i did some ROS VLF tests for a few days in
2010, until i found that it cannot decode signals that were more than O copy
in DFCW-3), it would be a problem for that PC or at least at its
limit.
A pity about loosing the ID of that traces in the ARGO screen,
seemed to have been OOO copy...
How many Opera decodes in AK so far, on
137?
73, Stefan
Am 09.01.2012 14:03, schrieb Laurence KL7UK:
Ive been playing with Opera and mixing it up with QRSS up in
Alaska on my poor old Dell. It appears the CPU is overloaded and the
result is some very strange things happening - Im still not sure exactly
as I have to collect audio for Argo at just 172Hz using 136KHz USA for
running parallel Opera but the attached is what it produced on the pre
dawn Eu short period "tilt/lift/short term attenuation reduction" that has
occured a couple of times this week, and Ive not seen before - the Eu dusk
lift of around 5dB lasts for appx 45mins.
I can decode DK7FC
but there appears to be another signal - or perhaps its an artifact. I
dont think it was Steve VE7SL who was down at 171 with a Strong "SL"
a little later in the morning. Time I got that additional processing
power. Everything is shifted up in freq as you can see and probably
interrupts and allocations going on..certainly not a Geo RF effect (or is
it ??)
regards
Laurence
KL7UK
|
