All noted , Jim ! Bob WE6XGR , is running a OP2 / OP4 test tonight (11/2) from 00:00 z , using the 80 meter settings, this should give a play off 2/4 mode , then we should have the full picture of sp
worse ? is that worse as in fails to decode or decodes at a worse s/n ? , perhaps worst was the worst word to use to describe a worsening situation , by only making things worse ? G.. Yes OP8 decodes
and this would indicate that it is the equilivent of QRSS ? something better than QRSS 3 isnt it ? Bob K3DJC ____________________________________________________________ 53 Year Old Mom Looks 33 The
Dear Eddie, LF Group, So what you are saying is that the actual SNR at the decode/no decode threshold is the same for Op8 and Op4, but that the SNR indicated by Op8 at this level is 3dB lower than th
This one worked before also on the G3ZJO G0KTN path:- After dark QSB starts on 500kHz even OP4 can become a struggle, the PA0AM path again. 18:52 18105 PA0AM Op1 -22 dB 322 km Actually on 500kHz 18:5
Yes OP8 decodes but almost always either equal S/N or worse. E I would go for OP2 on 500 , that was the speed that produced the best results at the start , did you have any OP8 decodes? G. This one w
Hello all Opera lovers, Testing Opera speed op1 till op32 under "lab" conditions without the real world phenomena like fading and QRN. The results: 1. if you have solid Opera decodes the received SNR
Hello Andy We do need to refer back to my original posts here. Yes OP8 decodes but almost always either equal S/N or worse. After that Graham asked for what I meant by worse. I have been keen to run
The s/n report is the average of each decoded bit in the total tx time frame .. The variations may be down to qsb , in that in the shorter time , there where more demod's at a higher level ...... qsb
Dear Graham, Eddie, LF Group, There is 3 dB gain in each X2 time step One would expect so, but Eddie's results apparently contradict this. But, if the transmitted signal power and noise power spectra
Hi James Yes that is what I consider I have been observing and with the help of Trevor and Cor testing to the best of our ability with a 3dB TX power step from decode to no decode, during steady sign
I have looked back at some other results this evening. There was QSB at this time. This was using my signal to Wootton Bassett 104km. 17:32 500 G3ZJO de G4MDH Op4 104 km -26 dB in Wootton Bassett wit
The worse question you could ask. The decodes fall off at the same signal level resulting from the same TX Power, however OP8 reports -31dB and OP4 reports -28dB I call that worse. In other words I h
Interesting Ed. I would go for OP2 on 500 , that was the speed that produced the best results at the start , did you have any OP8 decodes? G. This one worked before also on the G3ZJO G0KTN path:- Aft
Jim There is 3 dB gain in each X2 time step , I think without using path simulator or similar these are a little subjective .. the reading is the average over the tx time. G. Dear Eddie, LF Group, So
Thanks for posting the info Albert, that is what was needed. I assume Av is the average of the minimum signal levels obtained from the large number of test. 73 Eddie G3ZJO Testing Opera speed op1 til
The reported S/N (normalised to 2500Hz) for each mode should be the same; the decoding threshold is different in proportion to teh speed. If the reported value is consistently and systematically out,
