Re: LF: Grabbers - how do you do it?

[Markus Vester <markusvester@aol.com>]

trying to repost this mail, as it didn't come through last night...

Dear Roger,

you may want to create a html webpage, and you will have to periodically
upload an image. The latter is perhaps the more tricky part, and I will
describe the way I use the DOS FTP client which comes with Windows.

First go to the SpecLab home directory (normally c:\Spectrum) and create a
textfile named eg. "ftp_vlf.txt", containing the ftp commands:
==============
open <host>
<login>
<password>
quote pasv
bin
put vlf.jpg vlf.jpg
bye
==============
Host, login and password are the information given by your provider, without
the brackets. The quote pasv command may or may not be required.

Then open SpecLab's periodic actions tab, and enter the lines
==============
capture ("vlf.jpg")
exec ("ftp -s:ftp_vlf.txt")
==============
into the action macro field. Fill in a time interval (eg. 00:10:00) between
captures, check the "active" box and click "Ok".

Hope that may be useful...

73, Markus (DF6NM)


From: Roger Lapthorn
Sent: Sunday, November 14, 2010 11:32 PM
To: rsgb_lf_group@blacksheep.org
Subject: LF: Grabbers - how do you do it?

Apologies if this sounds a pathetically stupid question to ask the experts
here, but I believe it is better to confess ignorance and ask anyway:

Assuming one has a decent VLF receiver/E-field probe antenna and a package
(like Spectrum Lab or Spectran) that captures screengrabs periodically, what
is then needed to make these visible to others? I am not an IT expert so I'm
looking for a really simple way of doing this. I have Virgin Media webspace
(unused) and ideally it would be good to be able to upload the jpg image(s)
to this. I've also heard about people using their PC as a web server, but
honestly I've no idea what this is or how I would go about it.

So, can someone offer me an "idiot's guide to setting up a grabber" please?
This must be quite straightforward as people must do this for home security
cameras. Again, please don't baffle me with jargon that I won't understand:
simple, easy, and "noddy guide" style please.

If I could set up a VLF grabber at the home QTH it could be pretty useful
for people in SE England doing VLF experiments, including me.

73s
Roger G3XBM