Re: [SLUG] Download speed
ok, I patched those links in. Forgive my code posting, last time. I will
answer offlist if I get any further requests.
It has some command line options to specify the size to download, where to
put the logfile, and the duration to wait before downloads.
$ python x_download_test.py 1M -i 5
-Python-
# /usr/bin/python
import time, optparse, urllib2, csv
if __name__ == __main__:
dlurls = {1M : http://mirror.internode.on.net/pub/test/1meg.test;,
10M : http://mirror.internode.on.net/pub/test/10meg.test;,
50M : http://mirror.internode.on.net/pub/test/50meg.test;,
100M : http://mirror.internode.on.net/pub/test/100meg.test
,
1G : http://mirror.internode.on.net/pub/test/1000meg.test
,
5G : http://mirror.internode.on.net/pub/test/5000meg.test
}
print(Network Download speed logger. Freeware Licence)
usage = usage: %prog [options] arg1 arg2
parser = optparse.OptionParser(usage=usage)
parser.add_option(-i, --interval, action=store, type=float,
dest=interval, default=10, help=Interval in minutes between downloads)
parser.add_option(-l, --logfile, action=store,
dest=logfilename, default=download_times.csv, help=Interval in minutes
between downloads)
(options, args) = parser.parse_args()
download_size = 10M
if len(args) 0:
download_size = args[0]
download_interval = options.interval * 60
download_url = dlurls[download_size]
# setup a logfile
f = open(options.logfilename, 'a')
writer = csv.writer(f)
while (1):
print(Downloading %s % download_size)
# Initial Time reading
start = time.clock()
mp3file = urllib2.urlopen(download_url)
mp3file.read()
elapsed = time.clock() - start
writer.writerow([time.strftime(%c),download_size,elapsed,])
print(Pausing for %f minute(s) % int(download_interval/60))
time.sleep(download_interval) # Time in seconds.
On Thu, May 22, 2014 at 1:40 PM, Rick Welykochy r...@vitendo.ca wrote:
David wrote:
On 22/05/14 08:38, Rick Welykochy wrote:
Edwin Humphries (text) wrote:
Can anyone suggest a way of testing the download speed of my NBN fibre
connection every hour and logging it? I have an ostensibly 100Mbps
connection, but the speed seems to vary enormously, so an automated process
would be good.
Download a file of known length, say 1000 MB, from a server
whose speed you can trust every hour. Time and log each download.
Also verify the contents of the downloaded file with an md5 or sha
digest.
This can be automated with an scp inside a simple (shell) script.
Westnet used to have a file available for exactly this purpose - I dare
say other ISP's do too. Perhaps you could ask your own ISP.
This looks promising:
http://mirror.internode.on.net/pub/test/
I found this via a web search for test download file residing on an isp
australia.
cheers
rickw
--
Rick Welykochy || Vitendo Consulting
If consumers even know there's a DRM, what it is, and how it works, we've
already failed.
-- Peter Lee, Disney Executive
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Re: [SLUG] Best (most efficient method) recursive dir DEL
On 22 May 2014, at 9:10, Kyle k...@attitia.com wrote:
Hi folks,
I was wondering what is the best (as in most efficient method) for doing an
automated, scheduled recursive search and DEL exercise. The scheduled part is
just a cron job, no problem. But what's the most efficient method to loop a
given structure and remove all (non-empty) directories below the top dir?
The 3 examples I've come up with are;
find top_dir -name name_to_find_and_DEL -exec rm -rf {} \; - what's
the '\' for and is it necessary?
rm -rf `find top_dir -type d -name name_to_find_and_DEL` - does it
actually require the ' ` ' or are ' ' ' good enough?
find top_dir -name 'name_to_find_and_DEL' -type d -delete- or won't
this work for a non-empty dir?
How do you define most efficient? Run time? CPU cycles? Memory usage? Forks?
Disk reads/writes? Readability/maintainability?
My personal guess is that a find command that locates the things you want to
delete and ends with -print0 | xargs -0 rm -rf will satisfy most of those
criteria.
(Xargs will stuff as many file names as it thinks will fit on the command line,
but sometimes it gets ambitious - you might have to use xargs -0 -n 100 rm
-rf to limit it to 100 file names per invocation of rm)
Or is there a more efficient manner which I can slot into a cron job?
Much appreciate the input.
--
Kind Regards
Kyle
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Re: [SLUG] Best (most efficient method) recursive dir DEL
Hi Kyle,
You might find it worth looking at the following invocation of find:
find top_dir -name name_to_del -exec rm -rf {} \+ -prune
the '+' will support expansion of arguments, thus it works exactly like
xargs in building up a command line that is passed to rm. You may also need
to specify \{}\ to handle whitespace in directory names, untested.
On 22 May 2014 00:10, Kyle k...@attitia.com wrote:
Hi folks,
I was wondering what is the best (as in most efficient method) for doing
an automated, scheduled recursive search and DEL exercise. The scheduled
part is just a cron job, no problem. But what's the most efficient method
to loop a given structure and remove all (non-empty) directories below the
top dir?
The 3 examples I've come up with are;
find top_dir -name name_to_find_and_DEL -exec rm -rf {} \; -
what's the '\' for and is it necessary?
You need to escape ';' from the shell, otherwise it will think it's the end
of the command and strip it from what is passed to 'find' which will in
turn exit with an exception in that it couldn't work out where the end of
the 'exec' command occurred.
rm -rf `find top_dir -type d -name name_to_find_and_DEL` - does it
actually require the ' ` ' or are ' ' ' good enough?
find top_dir -name 'name_to_find_and_DEL' -type d -delete- or
won't this work for a non-empty dir?
Or is there a more efficient manner which I can slot into a cron job?
As someone else already pointed out, it'll probably depend on
--
Darragh Bailey
Nothing is foolproof to a sufficiently talented fool
--
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Re: [SLUG] WiFi problem.
Hi Will, +1 again on below. Just what I was going to say. However it may not just be a hard switch. I've had switches that are not a button as such. They detect your finger swiping over them. Such that is there somewhere on your laptop that has lights that you run your finger over and it will turn on/off whatever soft switch is under the plastic. The surface is smooth. You just move your finger over it to turn off/on anything under it. Run your finger around all the smooth plastic bits of the laptop. (while switched on of course ;-) Ben On 22/05/14 14:39, David wrote: +1 I've made this mistake several times On my lapdog the hardware switch is small and obscure and easy to not even realise it's there. On 22/05/14 14:37, David Lyon wrote: First thing to check is that the Wifi button is set to on. Sometimes it's very easy to accidently bump them to off without even realising. On Thu, May 22, 2014 at 2:18 PM, William Bennett wrbennet...@gmail.comwrote: I'm sure someone has seen this before: there doesn't seem to be a problem posted that nobody knows. I have a Toshiba Satellite A660, running Ubuntu 14.04 In the past, I've been able to :-- 1. tether my smartphone to the laptop 2. go to a coffeeshop that has a WiFi and pick it up with the laptop. Now I can't. I can click on the “fan” and whilst it will open, nothing WiFi registers. Not evne when the smartphone swears it's emulating a portable hotspot. Took the laptop to the local computer shop. Was asked whether I'd had Windows on the laptop in the past. Answer yes. Well, since the switch is a Window switch, it might be a vagrant piece of Window leftover that turned it off. This sounds like Olde Stuffe. Nevertheless, I can't pick up any WiFi. And Fn-F8 doesn't turn on anything. I'm reluctant to believe this is a Toshiba peculiarity (as I've also been told). I've had it working with earlier versions of Ubuntu. Any suggestions will be gratefully acted upon. William Bennett. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] multiple grep conditions ?
On 22 May 2014 14:12, li...@sbt.net.au wrote: On Wed, May 21, 2014 12:28 pm, pe...@chubb.wattle.id.au wrote: As you're not using regular expressions, but just strings, fgrep is the way to do it. fgrep -q '07/2014 15/06/2014 20/06/2014 25/06/2014' part 2 exit 0 Peter, thanks Amos, you've per-emptied my next Q, thanks Glad I did :) I actually should move it totally out of script, as this list will often change, so (I think?) I can enter dates into a file, say 'patterns' and, use like fgrep -q -f /path/to/pattern part2 exit 0 Yes this will work. One pattern per line. See man grep. No need to quote or anything since it's not parsed through the shell. ? will I need any quotes in file 'pattern', or simply like: 07/2014 15/06/2014 20/06/2014 25/06/2014 thanks again V On Wed, May 21, 2014 7:24 pm, Amos Shapira wrote: It might be more maintainable to keep the list of patterns in a variable (line per pattern) then pass it to grep using grep's -f/--file= argument: PATTERNS=15/06/2014 20/06/2014 25/06/2014 ... grep -q -f (echo $PATTERNS) file2 exit 0 Note the use of double quotes around the variable interpolation in the grep command line, they are essential to preserve the newlines in the variable's value. The (bash specific, I think) trick here if the use of (command) which causes bash to open a pipe to the command and pass its name as /dev/fd/FILE-DESC-NUMBER to grep so grep thinks it's a regular file to read match patterns from while its stdin is still free to read the input to match against the patterns. If grep doesn't read its input from stdin but from a regular file then you don't need this trick and can just pass -f - to make grep read the patterns from stdin and the matching text from the regular file: grep -q -f - file2 exit 0 $PATTERNS (actually this uses another bash specific trick, you can do the following to get rid of bash'ism completely: echo $PATTERN | grep -q -f files exit 0 ) -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- [image: View my profile on LinkedIn] http://www.linkedin.com/in/gliderflyer -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Best (most efficient method) recursive dir DEL
On 22 May 2014 19:16, Darragh Bailey daragh.bai...@gmail.com wrote:
Hi Kyle,
You might find it worth looking at the following invocation of find:
find top_dir -name name_to_del -exec rm -rf {} \+ -prune
the '+' will support expansion of arguments, thus it works exactly like
xargs in building up a command line that is passed to rm. You may also need
to specify \{}\ to handle whitespace in directory names, untested.
Kudos for bringing this up. I wasn't aware of the + option.
1. There is no need to quote the {}, find will pass the file names already
as separate arguments without splitting them on white space.
2. As you demo above but possibly worth to stress - the + form does NOT
take a terminating ;.
Test (my Mac home directory, which contains a few standard directory names
with spaces):
~$ gfind -maxdepth 1 -type d -exec ls -dF {} \+
./ ./Downloads/ ./Sites/
./.Trash/ ./Google Drive/ ./Snapshots/
./.config/ ./Library/ ./VirtualBox VMs/
./.ssh/ ./Movies/ ./bin/
./.vagrant.d/ ./Music/ ./git-dotfiles/
./Applications/ ./Pictures/ ./macports/
./Desktop/ ./Programs/ ./tmp/
./Documents/ ./Public/
Notice how ls is passed the right directory names for Google Drive and
VirtualBox VMs
--Amos
On 22 May 2014 00:10, Kyle k...@attitia.com wrote:
Hi folks,
I was wondering what is the best (as in most efficient method) for doing
an automated, scheduled recursive search and DEL exercise. The scheduled
part is just a cron job, no problem. But what's the most efficient method
to loop a given structure and remove all (non-empty) directories below
the
top dir?
The 3 examples I've come up with are;
find top_dir -name name_to_find_and_DEL -exec rm -rf {} \; -
what's the '\' for and is it necessary?
You need to escape ';' from the shell, otherwise it will think it's the end
of the command and strip it from what is passed to 'find' which will in
turn exit with an exception in that it couldn't work out where the end of
the 'exec' command occurred.
rm -rf `find top_dir -type d -name name_to_find_and_DEL` - does
it
actually require the ' ` ' or are ' ' ' good enough?
find top_dir -name 'name_to_find_and_DEL' -type d -delete- or
won't this work for a non-empty dir?
Or is there a more efficient manner which I can slot into a cron job?
As someone else already pointed out, it'll probably depend on
--
Darragh Bailey
Nothing is foolproof to a sufficiently talented fool
--
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
--
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http://www.linkedin.com/in/gliderflyer
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Re: [SLUG] WiFi problem.
sometimes its a soft switch too Fn + Fsomething (F6 as i recall seems to be the default) On 22/05/14 19:30, Ben Donohue wrote: Hi Will, +1 again on below. Just what I was going to say. However it may not just be a hard switch. I've had switches that are not a button as such. They detect your finger swiping over them. Such that is there somewhere on your laptop that has lights that you run your finger over and it will turn on/off whatever soft switch is under the plastic. The surface is smooth. You just move your finger over it to turn off/on anything under it. Run your finger around all the smooth plastic bits of the laptop. (while switched on of course ;-) Ben On 22/05/14 14:39, David wrote: +1 I've made this mistake several times On my lapdog the hardware switch is small and obscure and easy to not even realise it's there. On 22/05/14 14:37, David Lyon wrote: First thing to check is that the Wifi button is set to on. Sometimes it's very easy to accidently bump them to off without even realising. On Thu, May 22, 2014 at 2:18 PM, William Bennett wrbennet...@gmail.comwrote: I'm sure someone has seen this before: there doesn't seem to be a problem posted that nobody knows. I have a Toshiba Satellite A660, running Ubuntu 14.04 In the past, I've been able to :-- 1. tether my smartphone to the laptop 2. go to a coffeeshop that has a WiFi and pick it up with the laptop. Now I can't. I can click on the “fan” and whilst it will open, nothing WiFi registers. Not evne when the smartphone swears it's emulating a portable hotspot. Took the laptop to the local computer shop. Was asked whether I'd had Windows on the laptop in the past. Answer yes. Well, since the switch is a Window switch, it might be a vagrant piece of Window leftover that turned it off. This sounds like Olde Stuffe. Nevertheless, I can't pick up any WiFi. And Fn-F8 doesn't turn on anything. I'm reluctant to believe this is a Toshiba peculiarity (as I've also been told). I've had it working with earlier versions of Ubuntu. Any suggestions will be gratefully acted upon. William Bennett. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] WiFi problem.
Hi William, I'm sure someone has seen this before: there doesn't seem to be a problem posted that nobody knows. I have a Toshiba Satellite A660, running Ubuntu 14.04 In the past, I've been able to :-- 1. tether my smartphone to the laptop 2. go to a coffeeshop that has a WiFi and pick it up with the laptop. Now I can't. I can click on the “fan” and whilst it will open, nothing WiFi registers. Not evne when the smartphone swears it's emulating a portable hotspot. Took the laptop to the local computer shop. Was asked whether I'd had Windows on the laptop in the past. Answer yes. Well, since the switch is a Window switch, it might be a vagrant piece of Window leftover that turned it off. This sounds like Olde Stuffe. Nevertheless, I can't pick up any WiFi. And Fn-F8 doesn't turn on anything. I'm reluctant to believe this is a Toshiba peculiarity (as I've also been told). I've had it working with earlier versions of Ubuntu. Any suggestions will be gratefully acted upon. I have had this problem recently on an old HP laptop. On this laptop there is a switch which is electronic not mechanical. Try as I might in Linux, I could not get the wireless to switch on yet in Windows XP it was fine. Turns out that the wireless card software in Windows was able to permanently turn the wireless off so I had to reset it there. After that, it is always fine in Linux (Fedora 20). So you might have to look hard at the software in Windows for the solution to your problem. Happy hunting. Regards, Rick Phillips -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Download speed
On 22/05/14 08:27, Edwin Humphries (text) wrote: Can anyone suggest a way of testing the download speed of my NBN fibre connection every hour and logging it? I have an ostensibly 100Mbps connection, but the speed seems to vary enormously, so an automated process would be good. The speed would be expected to vary enormously across the internet, only to nearby (and that pretty much means NSW, QLD or VIC for a user in NSW) servers that themselves have 100Mbit spare would you actually approach 100Mbit. Reasons you might not get 100Mbit, just off the top of my head, almost certainly widely incomplete. But first there's one important thing to know, the bandwidth/delay product, which in very simple terms means that as soon as there's any packet loss at all (and there's always some) the usable throughput is defined by a function of that loss and the latency of the connection. This is why achieving 100Mbit to Australian servers isn't too hard, even with a moderate amount of packet loss, but you can tolerate nearly no loss on a connection to a European server. http://en.wikipedia.org/wiki/Bandwidth_delay_product Your domain: 1. Client device incapable of 100Mbit transfers, still surprisingly common. OS, hardware, and client software all matter. 2. Client device to local gateway not capable of 100Mbit transfers. Wired gigabit ethernet (or *perhaps* 802.11n in an RF quiet environment) is needed for this. A bad ethernet cable may cause this too, always use pre-made (moulded strain relief) cables, humans are not reliable enough to make gigabit ethernet cables. Also, avoid a total cable length above 50m, many lower-end switches/routers can't actually drive ethernet to the full spec distance. 3. Local gateway (What's commonly called a router, industry call CPE), even fairly current gen stuff can struggle at 100Mbit transfer rate, especially if there's a high rate of session creation, or the router suffers from bufferbloat. Nbnco's domain: 1. Media errors on the fibre, this should be monitored by NBNco. 2. Oversubscription on the fibre, the NBNco fibre is (currently) lit with GPON, which is a 2.5Gb signal (down), normally shared between 32 premises (64 or more is possible, but IIRC not used in .au). This should almost never occur if everyone's only at 100Mbit, even at higher speeds it works surprisingly well. Again, NBNco should know if this happens. 3. Oversubscription between the OLT (fibre head) and the ISP. Shouldn't happen, again monitoring should happen. (Your) ISP's domain: (Actually if you're not with one of the major providers there's a couple of extra interconnect points that can congest as well) 1. Oversubscription on the connection from NBNco to the ISP, this is known to cause some issues, sadly the best writeup of it I can't find. Actually monitoring this is a pain, the ISP can do some bits but are unlikely to do so, and NBNco probably don't either. 2. Congestion within the ISPs access network between the NBNco POI (120 nationally) and the ISP's core POP (usually 1 or 2 per city for all but the very largest). For large ISPs this is highly unlikely, and the smaller guys are covered by the wholesalers who don't save anything (significant) to get it wrong. 3. Congestion within an ISPs core. Unlikely, expect perhaps on inter-state links. 4. Congestion between an ISP and the next ISP in the path. Depending on who's involved this is either very unlikely or guaranteed. In the middle: 1. Did someone put in a stateful firewall which breaks TCP. This is pretty much all of them, this makes things a lot worse in high-latency or high-loss environments. 2. Is the server far away (see bandwidth/delay product above). The end server: 1. Does it have a path into a decent ISP network at 100Mbit? 2. Can it actually serve at 100Mbit? (plain static files are fairly easy, dynamic content can get expensive quick). The same caveats about OS, hardware and software apply as for the clients. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] Internet at 500m
Hi Sluggers, I have a friend living in near jungle conditions in a small town in the Philipines that wishes to span about 400m - 500m from an Internet connection to his house in the bush. Ethernet seems limited to 100m. Wifi seems limited to about 100m - 200m. Any suggestions for bridging this gap? thanks, rickw -- Rick Welykochy || Vitendo Consulting If consumers even know there's a DRM, what it is, and how it works, we've already failed. -- Peter Lee, Disney Executive -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Best (most efficient method) recursive dir DEL
Thanks to all for the responses.
Interestingly, everyone has come back with find (followed by..) as
the best option. Perhaps this is simply a reflection of the fact my 3
examples all used 'find'.
I have always thought (believed) 'find' was a less efficient process
than 'locate' and kind of hoped 'locate' (or some other cmd I don't
know) might pop up as a solution. I understand 'locate' depends on an
updated 'db', but I figured that indexing process was still more
efficient than 'find' trawling the structure in realtime.
Kyle
On 22-05-2014 19:16, Darragh Bailey wrote:
Hi Kyle,
You might find it worth looking at the following invocation of find:
find top_dir -name name_to_del -exec rm -rf {} \+ -prune
the '+' will support expansion of arguments, thus it works exactly
like xargs in building up a command line that is passed to rm. You may
also need to specify \{}\ to handle whitespace in directory names,
untested.
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Re: [SLUG] Best (most efficient method) recursive dir DEL
Locate only indexes path names, not other attributes (like type, size, time
etc)
On 23 May 2014 06:11, Kyle k...@attitia.com wrote:
Thanks to all for the responses.
Interestingly, everyone has come back with find (followed by..) as
the best option. Perhaps this is simply a reflection of the fact my 3
examples all used 'find'.
I have always thought (believed) 'find' was a less efficient process than
'locate' and kind of hoped 'locate' (or some other cmd I don't know) might
pop up as a solution. I understand 'locate' depends on an updated 'db', but
I figured that indexing process was still more efficient than 'find'
trawling the structure in realtime.
Kyle
On 22-05-2014 19:16, Darragh Bailey wrote:
Hi Kyle,
You might find it worth looking at the following invocation of find:
find top_dir -name name_to_del -exec rm -rf {} \+ -prune
the '+' will support expansion of arguments, thus it works exactly like
xargs in building up a command line that is passed to rm. You may also need
to specify \{}\ to handle whitespace in directory names, untested.
--
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Re: [SLUG] Internet at 500m
The old Pringles\milo tin antenna/yagi may do the trick.I know people had some interesting results, although unimpeded line of sight will be needed. On Friday, 23 May 2014, Rick Welykochy r...@vitendo.ca wrote: Hi Sluggers, I have a friend living in near jungle conditions in a small town in the Philipines that wishes to span about 400m - 500m from an Internet connection to his house in the bush. Ethernet seems limited to 100m. Wifi seems limited to about 100m - 200m. Any suggestions for bridging this gap? thanks, rickw -- Rick Welykochy || Vitendo Consulting If consumers even know there's a DRM, what it is, and how it works, we've already failed. -- Peter Lee, Disney Executive -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- -- Teach your kids Science, or somebody else will :/ ja...@ball.net vk2...@google.com vk2f...@google.com callsign: vk2vjb -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Internet at 500m
Have they seen products like this? http://www.aliexpress.com/item/150Mbps-high-power-outdoor-wi-fi-wireless-outdoor-wireless-access-point-cpe-equipment/1489776809.html On Fri, May 23, 2014 at 2:57 AM, Rick Welykochy r...@vitendo.ca wrote: Hi Sluggers, I have a friend living in near jungle conditions in a small town in the Philipines that wishes to span about 400m - 500m from an Internet connection to his house in the bush. Ethernet seems limited to 100m. Wifi seems limited to about 100m - 200m. Any suggestions for bridging this gap? thanks, rickw -- Rick Welykochy || Vitendo Consulting If consumers even know there's a DRM, what it is, and how it works, we've already failed. -- Peter Lee, Disney Executive -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Internet at 500m
There is a reflector that uses tin foil and catdboard to focus the signal. Uses a hyperbola like head lights First thing is to get a good wireless first. I had a wrt54g and it was excellent everything since has been rubbish and I did my research. Sydney wireless was getting up to 2 klm for wireless but they were boosting signals and using specialist aerials Use different channels to span multiple hops. On 23 May 2014 2:57:44 AM AEST, Rick Welykochy r...@vitendo.ca wrote: Hi Sluggers, I have a friend living in near jungle conditions in a small town in the Philipines that wishes to span about 400m - 500m from an Internet connection to his house in the bush. Ethernet seems limited to 100m. Wifi seems limited to about 100m - 200m. Any suggestions for bridging this gap? thanks, rickw -- Rick Welykochy || Vitendo Consulting If consumers even know there's a DRM, what it is, and how it works, we've already failed. -- Peter Lee, Disney Executive -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- Sent from my Android device with K-9 Mail. Please excuse my brevity. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Internet at 500m
The high gain antenna would work, just feed it with some decent coax so there actually is some signal. LMR400 or similar. J. On Fri, May 23, 2014 at 7:59 AM, Ken Foskey kfos...@tpg.com.au wrote: There is a reflector that uses tin foil and catdboard to focus the signal. Uses a hyperbola like head lights First thing is to get a good wireless first. I had a wrt54g and it was excellent everything since has been rubbish and I did my research. Sydney wireless was getting up to 2 klm for wireless but they were boosting signals and using specialist aerials Use different channels to span multiple hops. On 23 May 2014 2:57:44 AM AEST, Rick Welykochy r...@vitendo.ca wrote: Hi Sluggers, I have a friend living in near jungle conditions in a small town in the Philipines that wishes to span about 400m - 500m from an Internet connection to his house in the bush. Ethernet seems limited to 100m. Wifi seems limited to about 100m - 200m. Any suggestions for bridging this gap? thanks, rickw -- Rick Welykochy || Vitendo Consulting If consumers even know there's a DRM, what it is, and how it works, we've already failed. -- Peter Lee, Disney Executive -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- Sent from my Android device with K-9 Mail. Please excuse my brevity. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- -- Teach your kids Science, or somebody else will :/ ja...@ball.net vk2...@google.com vk2f...@google.com callsign: vk2vjb -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Internet at 500m
Rick Last time I checked (and I'm going from memory), there were high power access points that put out 20-25dBa, instead of the 8-12dBa that is standard (that's 500mW, instead of around 18mW). There are also commercial directional antennas, such as Yagi and backfire antennas, with gains of up to 16dBi. But, as Jason said, there is a need for them to be line-of-sight. If that's not possible, you may need an antenna with circular polarisation - these are more expensive. But most are not suited for dual frequency signals (and in any event you probably won't get a 5MHz signal to propagate 500m). Of course, you should plan on two matched antennas. Regards Edwin Humphries On 23/05/14 02:57, Rick Welykochy wrote: Hi Sluggers, I have a friend living in near jungle conditions in a small town in the Philipines that wishes to span about 400m - 500m from an Internet connection to his house in the bush. Ethernet seems limited to 100m. Wifi seems limited to about 100m - 200m. Any suggestions for bridging this gap? thanks, rickw -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Internet at 500m
Hi... I'm the proud possessor of a pair of Ultrawap access points. They were used for years over a 200metre line of sight connection and worked perfectly. I believe you can attach yagi's to them to extend their range if the standard aerial isn't good enough. They are now surplus to my requirements if you are interested. On 23/05/14 02:57, Rick Welykochy wrote: Hi Sluggers, I have a friend living in near jungle conditions in a small town in the Philipines that wishes to span about 400m - 500m from an Internet connection to his house in the bush. Ethernet seems limited to 100m. Wifi seems limited to about 100m - 200m. Any suggestions for bridging this gap? thanks, rickw -- David McQuire 0418 310312 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Internet at 500m
Hey Penguinistas, Thanks to all for loads of useful info on extending my friend Andy's digital reach in the Philipine jungle. I will pass on all replies to him. He is a Linux developer. I've worked with him on a Python + Qt project. So you are helping one of the converted. cheers rickw Rick Welykochy wrote: Hi Sluggers, I have a friend living in near jungle conditions in a small town in the Philipines that wishes to span about 400m - 500m from an Internet connection to his house in the bush. Ethernet seems limited to 100m. Wifi seems limited to about 100m - 200m. Any suggestions for bridging this gap? thanks, rickw -- Rick Welykochy || Vitendo Consulting If consumers even know there's a DRM, what it is, and how it works, we've already failed. -- Peter Lee, Disney Executive -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
