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Re: LF: VO1NA OP32

To: <[email protected]>
Subject: Re: LF: VO1NA OP32
From: "Graham" <[email protected]>
Date: Fri, 21 Jun 2013 17:05:08 +0100
Importance: Normal
In-reply-to: <[email protected]>
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Sorry  to  read that  ,  nothing  showing  on the  map ,

Not sure if you need to leave a 'gap' after each tx 'cycle' the software switches to Rx , to scan for the lowest s/n qrg , then returns to Tx , this only takes a very short time 1-2 seconds and applies only to audio 'tx drive'
As the clocking is self generating , its possible , no gap is needed ,
but short gap would do no harm [ couple of seconds] the dsp engine
will handle multiple 'randomly spaced' decodes , so there are no
start/stop over lap issues , as a minimum of 50% randomly distributed
of the tx stream is needed to de-code , missing the start or any part
of the signal is not de-bar to the final de-code
Good luck -73 -Graham

From: <[email protected]>
Sent: Friday, June 21, 2013 8:34 AM
To: <[email protected]>
Subject: Re: LF: VO1NA OP32

Hi Markus,

Thank-you for monitoring.  There may have also been a problem at this end
after the first transmission.  Will get it sorted and try again tonight
starting at 00 utc, using Grahams suggestion to maximise the duty cycle.


On Fri, 21 Jun 2013, Markus Vester wrote:


sorry not a trace here yet, neither in the spectrogram nor in the correlator output. We've had unusually hot and humid weather here this week and the grabbers were completely swamped by QRN. Early this morning a cold front passed by. The Loran lines have reappeared, and we can hope for improved receive conditions for the nights to come.
Best 73,
Markus (DF6NM)

From: [email protected]
Sent: Friday, June 21, 2013 12:14 AM
To: [email protected]
Subject: LF: VO1NA OP32

Dear Group,

With many thanks to the group members for their kind assistance, Markus
and Graham in particular, A satisfactory exciter is presently QRV
and will be returning the OP32 code (that Makus recently sent by email)
on 137.555 kHz starting tonight 20 June at 2359 utc. The back-yard photon
flux will be ~10^30/s.

Good luck to any who will be monitoring and please feel free to let
me know if you receive an indication of the sigs.


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