|
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
|
|
