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  • Re: The Return the 7038 QSO party !

    7038 open to VK G, VK3XHM https://pskreporter.info/pskmap.html# EB5BQC https://pskreporter.info/pskmap.html# 40m OPERA 17064 km 21:55:08 EB5BQC

    graham787 2 days ago
  • Re: OX6M UA1019 SWL 2m OPERA 3461 km 21:12:08

    Hi Bo, I check, hence the request for info ... Well if you 100% sure of two things, then you can only be 50% sure of each ) Must be VHF pirate version

    graham787 4 days ago
  • Re: OX6M UA1019 SWL 2m OPERA 3461 km 21:12:08

    Hi I am 100% sure of two things: - OX6M is not QRV on 2 m - OX6M does not transmit Opera but PI4 + CW + carrier http://geronne.dk/index.php/ox-beacons

    bo_oz2m 5 days ago
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Group Description

OPERA IS AN ONGOING PROJECT

OPERA DOWNLOAD LINK :-
Download latest version from
http://rosmodem.wordpress.com

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
Transverter offset

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.

OP05 -20dB
OP 1 -23dB
OP 2 -26dB
OP 4 -30dB
OP 8 -33dB [ -37 Dynamic]
OP16 -37dB
Op32 -41dB [ -47 Dynamic]
Op64 -44dB

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
http://www.moetronix.com/ae4jy/pathsim.htm


OPERA IS AN ONGOING PROJECT
Download latest version from :-
http://rosmodem.wordpress.com

>>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.

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