Ok Joe
Well what ever the qrg , its working ! I think the decoder pass
band is 100 Hz , but you only need 1 or 2 Hz separation and a
few Hz in from the edge
Yes , OP8 is clocked at x4 OP32 , same pattern , from the map
w1tag , wivd are also on net as are k2ncc op8
VO1NA G4WGT 2200m OPERA 3519 kms 22:46:15
VO1NA TF3HZ 2200m OPERA 2601 kms 22:46:14
73-G,
--------------------------------------------------
From: <[email protected]>
Sent: Wednesday, September 18, 2013 11:49 PM
To: "Graham" <[email protected]>
Cc: <[email protected]>
Subject: Re: LF: VO1NA Op-32
Hi Graham and Markus,
It's a relief to learn that the TX has drifted off QRG! Thanks Markus.
Will continue with OP32 tonight.
Graham, to make OP8 from 32, just divide by 4, right? (8192/4 ms pulses)
And will it be OK to stay on 137.555 as 650 seems a bit congested?
73 to all
Joe
On Wed, 18 Sep 2013, Graham wrote:
Thanks for that Markus
That info could be gathered at the RX stations and shared via
the web beacon , but would only be of use is the 'audio' tx
drive was used ..
For such a short tx time , 4 mins of 'carrier' and anything over
2 mins needed for a decode , OP8 seems to be producing some
very good results , unless there is some 'flutter' , which the
shorter cycle is able to make use of ? if nothing else , the
power bill is 25% of op32 !
W1VD is also showing on the PSK map , Gus is running higher
power than at the start , so may be W1VD is in range ?
73-G,
From: Markus Vester
Sent: Wednesday, September 18, 2013 9:15 PM
To: [email protected]
Subject: Re: LF: VO1NA Op-32
Yes op-8 would have been in easy reach. This morning, Joe's dashes were
well discernible even in the 0.7 Hz grabber window.
Having said that, my personal preference regarding overnight beaconing is
more towards "the slower the better" ;-) In the morning I'd rather be
greeted by 10 really deep detections than by a long list of spots with
intermediate sensitivity.
As for frequency, using 137650 exactly might not be ideal, as observers
in East Europe would likely be affected by the Russian Loran / Chayka
chain. Actually here in Central Europe the 6.25 Hz multiples reappeared
today when Slonim (the most westerly station in the chain) came back on
air after several weeks outage. Staying away from the Loran lines by a Hz
or so will avoid that problem.
Best 73,
Markus (DF6NM)
From: Graham
Sent: Wednesday, September 18, 2013 5:36 PM
To: [email protected]
Subject: Re: LF: VO1NA Op-32
Joe,
Looking at the psk-map , Its quite possible , all the monitors
where
looking for OP8 signals ve7bdq <> we2xpq is also showing as
OP8
as well
No reason why OP8 should not decode from you , just need to qsy
to the OP8 centre qrg 137.650 KHz
73 -G,
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