Hi Gary that looks better.
Alan
----- Original Message -----
From: "Gary - G4WGT" <[email protected]>
To: <[email protected]>
Sent: Monday, March 16, 2009 9:44 PM
Subject: RE: LF: RE: Syncback software
> Andy,
>
>
>
> I inserted 10dB for the 2104 Tx & then 20dB but at the 2119 Tx there was a
> very deep fade (QSB) which I also noted on a separate Rx. I will leave it
at
> 20dB for a longer period.
>
>
>
> Recent levels as below :-
>
>
>
> 20:45 65.81 40.29 -240.0 1499.7
>
> 20:46 43.87 40.29 -240.0 0.0
>
> 20:47 43.36 40.29 -240.0 0.0
>
> 21:00 58.08 32.23 -240.0 1499.8
>
> 21:01 37.72 32.23 -240.0 0.0
>
> 21:02 34.32 32.23 -240.0 0.0
>
> 21:15 32.47 25.55 -240.0 0.0
>
> 21:16 28.19 25.55 -240.0 0.0
>
> 21:17 31.14 25.55 -240.0 0.0
>
> 21:30 58.90 27.07 -240.0 1499.7
>
> 21:31 28.89 27.07 -240.0 0.0
>
> 21:32 28.86 27.07 -240.0 0.0
>
>
>
> Cheers, Gary.
>
>
>
> _____
>
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Andy Talbot
> Sent: 16 March 2009 21:03
> To: [email protected]
> Subject: Re: LF: RE: Syncback software
>
>
>
> Don't destroy your noise figure though. But at HF you can probably get
away
> with 20 dB at least.
>
>
> Andy G4JNT
> www.g4jnt.com
>
>
>
> 2009/3/16 Gary - G4WGT <[email protected]>
>
> Andy,
>
>
>
> OK, I will insert an attenuator at the antenna socket (that's an easy
move)
> & watch how it performs. It is switched at 10dB steps so I will start at
> 10db of course.
>
>
>
> Cheers,
>
>
>
> Gary.
>
>
>
> _____
>
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Andy Talbot
> Sent: 16 March 2009 20:45
>
>
> To: [email protected]
> Subject: Re: LF: RE: Syncback software
>
>
>
> Doesn't matter which - just total system gain. That S/W works best if the
> noise threshold rides at about 10dB above the baseline, then it allows
for
> up to 70 - 80dB of signal peaks.
>
>
> Andy G4JNT
> www.g4jnt.com <http://www.g4jnt.com/>
>
> 2009/3/16 Gary - G4WGT <[email protected]>
>
> Alan,
>
> When you wrote :-
>
> my only comment is that you may have too much gain in the system.
>
> Are you meaning sound card or receiver gain?
>
> Gary.
>
>
>
> -----Original Message-----
> From: [email protected]
>
> [mailto:[email protected]] On Behalf Of Alan Melia
> Sent: 16 March 2009 19:38
>
> To: [email protected]
> Subject: Re: LF: RE: Syncback software
>
> Hi Gary my only comment is that you may have too much gain in the system.
It
> is sometimes better to have the noise further down nearer the axis.
>
> I am afraid there is a major problem with this kind of beacon, when the
> fading period is shorter than the sampling interval, so you dont really
know
> what the path is doing. The only reliable points are the peaks, the
troughs
> dont really mean anything without some very sophisticated analysis and
> probably two spaced receivers. However it does give a snapshot of the band
> without taking up too much bandwidth (this was what was required for 5MHz
> too). Despite all the data collected very little analysis has actually be
> done on the 5MHz data collected by this program. The one succesfull bit of
> work was that published in Radcom by Marcis Walden G0IJZ. I used it for
some
> time whilst Andy was testing the Poldhu beacon on 160m and also during the
> 1st two months that ran. I was certainly surprised by the daytime path on
> 160m from here. I have seen the data collected in Canada via Joe Craig
VO1NA
> and it is difficult to see how to use it.
>
> Still if you dont collect the data you will never know!!
>
> Alan G3NYK
>
>
>
>
> ----- Original Message -----
> From: "Gary - G4WGT" <[email protected]>
> To: <[email protected]>
> Sent: Monday, March 16, 2009 6:35 PM
> Subject: RE: LF: RE: Syncback software
>
>
> > Hi Graham, LF,
> >
> >
> >
> > The original HTML Code for the 2 minute refresh is still inserted into
the
> > page format, so upload is 30 minute intervals with Syncback & 2 minute
> > refresh. I have left the refresh in case I revert back to the original
> > grabber page. I will look at changing it if I continue to use the beacon
> > chart upload.
> >
> >
> >
> > I would like to have feedback from the LF group regarding the page, if
you
> > check it out periodically, is it useful to you, what are you looking
for.
> >
> >
> >
> > You can view the chart on my web site at :-
> >
> >
> >
> > http://myweb.tiscali.co.uk/wgtaylor/grabber3.html
> >
> >
> >
> > 73
> >
> >
> >
> > Gary - G4WGT.
> >
> >
> >
> >
> >
> > _____
> >
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of Graham
> > Sent: 16 March 2009 17:20
> > To: [email protected]
> > Subject: Re: LF: RE: Syncback software
> >
> >
> >
> > Hi Gary,
> >
> >
> >
> > The page seemed to refresh quite often ... are there two settings ?
> >
> >
> >
> > G ..
> >
> >
> >
> > From: Gary - G4WGT <mailto:[email protected]>
> >
> > Sent: Monday, March 16, 2009 10:40 AM
> >
> > To: [email protected]
> >
> > Subject: RE: LF: RE: Syncback software
> >
> >
> >
> > Hi Graham, LF,
> >
> >
> >
> > You wrote :-
> >
> > >>>Upload is set at 5 minute intervals and auto refresh at 2 minute
> > intervals. <<< that could be backed off to 15 mins as the beacon only
> > sends every 15 ??
> >
> >
> >
> > I mentioned in my previous mail to ignore the text on the page as it was
> > originally for grabber 1 for when I upgrade the web site (to a new
design
> &
> > better navigation etc), also mentioned is that upload is every 30
minutes.
> >
> >
> >
> > If the uploaded chart proves useful or interesting to operators &
viewers
> > then I will change the text & make it a permanent feature for the
> > foreseeable future.
> >
> >
> >
> > BTW :-
> >
> >
> >
> > For those of you who are not familiar with the chart -
> >
> >
> >
> > The RED trace is Andy's (G4JNT) beacon signal & the BLACK trace is the
> noise
> > level at my QTH.
> >
> >
> >
> > The Blue & GREEN are not in use & should be ignored on this chart as
they
> > are for the other beacons used when monitoring on the 5MHz allocation.
> >
> >
> >
> > Cheers,
> >
> >
> >
> > Gary - G4WGT
> >
> >
> >
> >
> >
> > _____
> >
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of Graham
> > Sent: 15 March 2009 22:17
> > To: [email protected]
> > Subject: Re: LF: RE: Syncback software
> >
> >
> >
> > Gary..
> >
> >
> >
> > That looks good ... 0500 looks best time for a qso .. see you then
Smile
> > emoticon
> >
> >
> >
> > >>>Upload is set at 5 minute intervals and auto refresh at 2 minute
> > intervals. <<< that could be backed off to 15 mins as the beacon only
> > sends every 15 ??
> >
> >
> >
> > the 15 db over the noise in day time is the same at this qth .. looks
> like
> > the big dips round 1900 where just when we where testing .. typical
hihi
> >
> >
> >
> > tnx- G ..
> >
> >
> >
> > From: Gary - G4WGT <mailto:[email protected]>
> >
> > Sent: Sunday, March 15, 2009 7:55 PM
> >
> > To: [email protected]
> >
> > Subject: LF: RE: Syncback software
> >
> >
> >
> > LF,
> >
> >
> >
> > I have now got the software, Syncback running correctly (I think).
> >
> >
> >
> > The purpose of this is to upload the chart from Andy's beacon as
received
> > here to my web site periodically, ie. every 30 minutes.
> >
> >
> >
> > I now have a receiver running 24/7 monitoring Andy,s beacon on 503.7KHz.
> >
> >
> >
> > You can view the chart on my web site at :-
> >
> >
> >
> > http://myweb.tiscali.co.uk/wgtaylor/grabber3.html
> >
> >
> >
> > For the moment ignore the text on the page as it is originally designed
to
> > use with the 500KHz grabber when I renew my web site design. If it is a
> > useful upload I will make it a permanent feature but may have to extend
> the
> > frequency coverage of grabber 1 so not to overload the PC with
operations
> > which will cause the PC to struggle.
> >
> >
> >
> > Let me have your comments please.
> >
> >
> >
> > 73
> >
> >
> >
> > Gary - G4WGT.
> >
> >
> >
> > _____
> >
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of Gary - G4WGT
> > Sent: 15 March 2009 16:10
> > To: LF -RSGB LF Group
> > Subject: LF: Syncback software
> >
> >
> >
> > Hi LF,
> >
> >
> >
> > If anyone is using Syncback software & can help, please.
> >
> >
> >
> > I am tying to upload a file to my website who's filename does not
change,
> > only the file size changes. I tried to do it with Argo-upload but failed
> so
> > I downloaded Syncback & still failing.
> >
> >
> >
> > Syncback gives me the following message :-
> >
> >
> >
> > **********************************
> >
> > Can connect, but unable to change to destination directory:
> >
> > /chart01.bmp:not a directory
> >
> > **********************************
> >
> > The Syncback help does not give me the answer.
> >
> >
> >
> > Any help will be appreciated
> >
> >
> >
> > Or
> >
> >
> >
> > Will Argo-Upload do it?
> >
> >
> >
> > Or
> >
> >
> >
> > Is there something else to do it?
> >
> >
> >
> > Thanks in anticipation,
> >
> >
> >
> > 73,
> >
> >
> >
> > Gary - G4WGT - IO83QP.
> >
> >
> >
> > _____
> >
> >
> > No virus found in this incoming message.
> > Checked by AVG - www.avg.com <http://www.avg.com/>
> > Version: 8.0.237 / Virus Database: 270.11.13/2001 - Release Date:
03/14/09
> > 06:54:00
> >
> > _____
> >
> >
> > No virus found in this incoming message.
> > Checked by AVG - www.avg.com <http://www.avg.com/>
> > Version: 8.0.237 / Virus Database: 270.11.15/2003 - Release Date:
03/15/09
> > 14:07:00
> >
> >
>
>
>
>
>
>
>
>
|
