Thanks Markus
Last night , OP32 test , I see only your signal
reached rn3agc , was propagation down compared to the last nights
, but Mike also reached TF3
For the psk system to work, you will need to run the
windows software ?
S/N , well one problem with static s/n measurements is
that , the real radio path is not included , so signal
variations are not allowed for , decode levels of -40 dB s/n
are average , so the lower detection levels can be 10 dB lower
again
One thing from the test , the beacon timer is only x2
64 mins timer is too long , next issue , this will be 30
mins , Mike may of missed windows with the 1 hour timer
running
Recovery of s/n data from PSk- There has been a
change to the adif log file, so , shortly , the adif download ,
should have the s/n level of the record as well , hopefully
there exists at application to extract the data and map the
results ..
73 -G..
Sent: Monday, July 23, 2012 12:25 AM
Subject: Re: LF: Good OP8 results .. Q 136 OP32 Test ?
Hi Graham,
yes, I've been testing two rounds
of "homemade" opera-32 on 137.590 kHz, 0.6 W ERP. Also had a go at
opera-8 in the middle (ending 22:25) which apparently went unnoticed.
PSK reporter surely has no idea of
where I live, and for some reason it erroneously located me at IO91UX
(incidentally the QTH of M0FMT). Thus the distances on the web are not
correct.
BTW is it possible to read the SNR
off pskmap as well, or only from the application? -39 dB on
Opera's "slightly biased average power scale" would mean -35 dB carrier
vs noise in 2.5 kHz. Which would be +14 dB SNR in 30 mHz, ie. a
comfortable "O" in QRSS-30, and probably readable in QRSS-10 as well.
Best regards,
Markus (DF6NM in Nuernberg JN59NJ)
PS just noticed that TF3HZ
has managed to capture my second op-32 transmission (ending 23:07).
This should be about 2540 km or so.
Sent: Monday, July 23, 2012 12:45 AM
Subject: Re: LF: Good OP8 results .. Q 136 OP32 Test ?
Ok Stefan
DF6NM has just decoded at -39 dB with RN3AGC , this
is right at the lower s/n of OP32
22:16 136 DF6NM de RN3AGC Op32 1541 mi -39
dB in Moscow with 3w + Tube TX ant 35
So a good start , may be OP32 would decode TA , we
will see during the next time ?
73-G..
Sent: Sunday, July 22, 2012 10:35 PM
Subject: Re: LF: Good OP8 results .. Q 136 OP32 Test ?
Wow, i can see EA7HAZ. That is a nice "goal". There are a few stations
on that pskmap that i never heared from on the reflector. That looks
like a real chance to get some newcomers. At least i have some hope!
Well, now i am not in Heidelberg and cannot transmit this night but i
may give it a try soon again.
Good luck for Mike!
73, Stefan/DK7FC
Am 22.07.2012 21:17, schrieb Graham:
Ok Stefan,
Well , we can only wait and watch ! , there are 14
monitors at the moment , just hope , switched to OP32
It is summer , may be 136 activity was not expected ,
could be on vacation etc ?
Audio band for OP32 is 100 Hz 1500 to 1600 Hz
with +/- 2 Hz total system stability requirement , this
should not be a problem
![Smile emoticon]( "Smile emoticon")
GL 73 -G..
Sent: Sunday, July 22, 2012 7:05 PM
Subject: Re: LF: Good OP8 results .. Q 136 OP32 Test ?
Hi Graham,
I do not doubt that W1VD will decode me on OP32 these days. But are
there others like VO1NA? I also wrote an email to him but got no answer
so far. What about VE1VDM?
73, Stefan
Am 22.07.2012 18:09, schrieb Graham:
Remarkable results using OP8 on on 136 from
Stefan, Mike and Tom both reaching TF3HZ 1858 Km and RN3AGC
/ RX3QFM , though not at the same s/n level !, but both decoding
inside the OP8 limits
While the condx, appeared not to support TA
propagation , this would be a good opportunity to to test the
OP32 mode
Could we ask, those using Opera OP8 on 136 to
change to OP32 for any overnight or other beacon activity for
comparison ?
OP32 offer's a 6 dB lower decode s/n , but with X4
longer tx 'times' may provide range extension greater than
predicted by s/n , the system working by average power along
the time line , being able to take advantage of qsb and flash
events ..
Thanks All
Graham
G0NBD
INFO :-
Follow the progress of Op8 tests and other 136 activity on
Mikes Blog,
http://g3xdv.blogspot.co.uk/
400 mW ERP >> 136kHz Op8 to Iceland and Russia
Transmitted an Opera8 beacon again overnight on the 136kHz band and got
reports
from RN3AGC, RX3QFM and TF3HZ (-32dB). The Icelandic station produced
five
decodes between 0022 and 0202. Best distance was 2681km to RX3QFM.
Highlights
were as follows:
02:02 136 G3XDV de TF3HZ Op8 1858 km -35 dB in Reykjavik
01:37 136 G3XDV de TF3HZ Op8 1858 km -31 dB in Reykjavik
01:12 136 G3XDV de TF3HZ Op8 1858 km -32 dB in Reykjavik
00:47 136 G3XDV de TF3HZ Op8 1858 km -32 dB in Reykjavik
00:47 136 G3XDV de RX3QFM Op8 2681 km -33 dB in KO91OO
00:22 136 G3XDV de TF3HZ Op8 1858 km -32 dB in Reykjavik
00:22 136 G3XDV de RN3AGC Op8 2483 km -34 dB in Moscow
23:57 136 G3XDV de RN3AGC Op8 2483 km -31 dB in Moscow
