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[linrad] Re: Linrad for Windows
- Subject: [linrad] Re: Linrad for Windows
- From: Sergio <yahoo.it; ik2mmb@xxxxxxxxxxxxxxxx>
- Date: Mon, 06 Mar 2006 17:55:49 +0100
nice piece of information from your side (as usual). We're looking to
remote some stuff here so it is very valuable to get these heads up. I
will try to check TeamSpeak out and see if I can come up with something,
if is not too much of a hussle for you I hope you don't mind if I'd
drop you a couple of lines with some question.
Regarding Dlinks I've personally used some 900AP+ (the 22MB ones - old)
for a long time with no problem at all, but on a short path. Two
identical units, one as an AP and one as an AC. Lately Dario (IW2FZR
you might have seen him on moon-net) expressed his desire to remote his
station which is about 20 miles from his home. As I don't use them
anymore, I modified these old units removing the diversity switch and
routing the rf out to a standard SMA connector. Well those things have
changed face, one shall know how bad are those diversity switches. The
isolation between the ports is as bad as 4-5dB! That means that even if
one is switched on the outer antenna is anyhow dissipating almost 50% of
the power on the other antenna... and on the rx side...
One unit has doubled the power out and begun definitely 'long heared'.
The second unit went from measured 9mW out to 70mW out! That switch was
horful! I did a third one of a friend of mine, same stuff almost 8
times the power out and a super rx now... I also noticed that on long
paths it is necessary to shorten the AP beacon very much to avoid to
have 'black holes' in the coverage. Well with the two units and two 1m
dish Dario and I did the 20 miles with incredile signals... That is not
Sorry for long tale, thanks for your info,
Those of you with a long memory will recall that several years ago
[late 2002 or early 2003] I wanted to use Linrad [Linux version, of
course] remotely but was stymied by its use of svgalib for graphics.
Svgalib is a local graphics solution, and so that meant that while one
could run Linrad remotely, one couldn't see the screen at the remote
location. A network workaround was found and made a part of Linrad by
Leif, but it was less than ideal to use in practice. This was
definitely NOT Leif's fault, but just a consequence of the environment
surrounding Linrad in Linux. The problem was basically that if anything
failed at the remote end or in the link, since you couldn't see the
remote Linrad screen on your monitor, you had to know the exact
sequence of keystrokes that you needed to input to blindly re-establish
the Linrad network link and get Linrad running in whatever mode you
chose after restarting Linrad remotely with RealVNC. And not all of
the functions were available remotely. So it was usable, but not an
ideal solution when the remote site was several miles away. There is
nothing like driving 4 miles [times two] to do something that just
takes a few seconds to do when one can see the screen ;)
A moment's thought would indicate that the Windows version of Linrad,
which does not use svgalib, should work remotely with no problem as
long as the link has enough bandwidth, and this is in fact the case. I
played yesterday with running Linrad for Windows remotely over a 4 mile
Wi-Fi link and it worked fine. RealVNC did a good job of running
Linrad for Windows remotely, and I used TeamSpeak to send the audio
across the link. I let things run for several hours and there were no
hangups or problems. Even resizing Linrad screen objects remotely was
no problem. There was no indication of any more audio latency over the
wireless link with TeamSpeak than I experienced on the wired network at
home, even though I also had two video channels running across the link
at the same time [constant ipcamera monitoring for security].
So if you want to run Linrad remotely, Linrad for Windows makes it easy!
I also tried Speak Freely for the remote audio channel over the network
at home, and it worked OK. But I didn't use it over the 4 mile link,
and so I can't comment on that. There may be better network audio
solutions than the ones I tried, but TeamSpeak worked fine for me, and
both TeamSpeak and Speak Freely were simple to install and get running.
The link is an 802.11b link using a Senao wireless bridge at each end.
It has been running for about 14 months; before that I used some
D-Link hardware that was TERRIBLE and gave lousy link performance.
Yahoo! Messenger with Voice: chiama da PC a telefono a tariffe esclusive
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