VK3KCK : Monitoring 5 Mhz over night Sunday 4 Oct G,graham787
Thanks Andy May be a little late tonight , ive qsp in the rsgb groups as well, but I'm sure the southern stations may have a good chance to makegraham787
Hi all: I am not seeing any spots showing up in the OPERA window.. If anyone wants to put a signal on the air on 477 KHz; we can at least say we tried... 73 :graham787
OPERA DOWNLOAD LINK :-
Download latest version from
Single carrier Data/Beacon mode Tx/Rx package.
Tx by COM PORT CW Key
Tx By SSB Audio Drive
Tx\Rx COM port
CAT Link embodied
Rx scanning routine places carrier in empty frequency slot by audio drive frequency change. [latest version , all bands based on 1500 Hz]
Mode is linked to BAND
Rate switch selects Tx speed.
(only on versions v1.5.3 & earlier)
Rx automatically matches Tx.
S/N performance expected,
Subtract 6 dB to compare with wspr/other data modes.
Opera is calibrated to the PathSim test software.
OP2 is approximate equal to WSPR, but the levels are average, not peak.
OP 1 -23dB
OP 2 -26dB
OP 4 -30dB
OP 8 -33dB [ -37 Dynamic]
Op32 -41dB [ -47 Dynamic]
Op4H 8.9 KHz Sound card SDR (-49 dB lowest yet )
16KHz SDR Optical test version
QSO Mode (all bands) -20 dB s/n
S/N Mean (not peak) calibrated to PathSim
OPERA IS AN ONGOING PROJECT
Download latest version from :-
>>WANTED IDEAS + CONSTRUCTION OF LINKED DATA SERVER<<
>>To provide Mapping / Search functions
The only measure’s of a data mode is energy used /data transferred and the reliability of the recovered data , one is constrained by the laws of physics , the other by the ability of the designer.
- Amateur and Ham Radio
- Aug 27, 2011
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