Oooops , just looked again , up too late last night watching the show
!
-4 Into Moscow ,is a outstanding level , with that level at 2000
miles , how many hops to the lower limit of OP32 -39 dB or
OP64 -42 dB ... one for Alan !
05:08 136 RN3AGC de RN3AUS Op8 -4 dB in nr Moscow
--------------------------------------------------
From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
Sent: Friday, July 20, 2012 5:49 PM
To: <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: DK7FC in OP8 on LF, summary
Thanks' Stefan
Quite interesting , especially the day light decode with TF3HZ and
later 4X1RF , decoding at the limit of the OP8 speed
Nothing showing from the USA , but may be next time under better
condx , also Joe vo1na may of managed a decdoe , as he did Gary ,
running 300 watts to a 35 ft top loaded vertical , using OP8 last
winter , but would of needed some warning of the event.
As Mike , suggested , a similar test with OP32 , -6 db lower , would
be a good comparison , there is actually no limit to the time that
the OP system can be configured to run, the longest is 4 Hours ,
OP4H for the 8Khz audio band , but once again, its data a mode and
not 'just' a single carrier, so still falls short at -50 db s/n ..
but if there was a station with a 'long' Ae ?
BUT The big question is , What can you transmit ? I assume the
amplifier is class d/e ...
Are you able to translate a audio based data mode to 136, the
opera data mode is designed to allow access to data/beacon with
simple CW transmitter and is not as efficient as mfsk or phase
modulated system ...
Tnx -73 -G.
--------------------------------------------------
From: "Stefan Schäfer" <Stefan.Schaefer@iup.uni-heidelberg.de>
Sent: Friday, July 20, 2012 1:51 PM
To: <rsgb_lf_group@blacksheep.org>
Subject: LF: DK7FC in OP8 on LF, summary
Hello LF!
Thanks to all listening stations for the reports of the yesterdays OP8
orgy on LF! I must admit that it was an interesting
afternoon/evening/night/morning.
Out of 733 reports, here is a summary of the best reports i got from the
25 stations.
Vy 73, Stefan/DK7FC
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