|
Ok Andy
Easily ... that's the problem hihi ..
Is there anyone tuned in who could write a short
code to say ,select the com port, time slot and key the com
port ? , That way any simple cw tx could be used , as not every one
can translate from audio to rf on 500 or 137 !
Thanks
Graham ,,
Sent: Tuesday, March 17, 2009 7:55 AM
Subject: Re: LF: RE: Syncback software
Easily, all you need is a five second transmission of carrier at xx:05:25
xx:20:25 etc
But accurate timing to at least one second accuracy is essential, so the PC
clock will have to be set continuously.
2009/3/16 Graham <[email protected]>
Andy,
Is there any way the slots could be filled
using a pc ... ? if a small exe could be run to make a cw pulse
then that would be no problem ?
G ..
Sent: Monday, March 16, 2009 9:36 PM
Subject: Re: LF: RE: Syncback
software
See you just have - got quite a shock until I realised the noise had
plummeted as well.
Any takers for the 5 and 6 minute slots?
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.
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.
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.
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
> 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
> Version:
8.0.237 / Virus Database: 270.11.15/2003 - Release Date: 03/15/09
>
14:07:00
>
>
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No virus found in this incoming message.
Checked by AVG -
www.avg.com
Version: 8.0.237 / Virus Database: 270.11.16/2006 - Release
Date: 03/17/09 07:23:00
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