On Thu, 11 Nov 2021 01:51:05 -0000 (UTC), iwannabastartsomeday
Good. A store and forward repeater, signal booster, range extender or
whatever will work if the endpoints cannot see each other. It's when
there are two RF paths, one direct from source to endpoint, and the
other going from source to endpoint via a store and forward repeater,
that things go awry.
In 2015, I gave a song and dance presentation on mesh networking to
the local Linux users group:
Note that a mesh network is nothing more than a repeater, where
multiple endpoints can also act as repeaters.
This is what 802.11n throughput looks like going directly from a
client radio (bridge) to a wireless access point:
That's what it's suppose to look like. Notice that the 25Mbit/sec to
70Mbit/sec 2.4GHz throughput is quite consistent and stable. The
source and endpoint were about 10 ft apart, so there are no signal
strength issues involved.
Then, I added a store and forward repeater into the room, located
roughly half way between the source and endpoint:
That's what a big problem looks like. The graphs are slower and vary
randomly in throughput. The average throughput is 1/2 or less of the
throughput without a store and forward repeater. That's expected
because the system can allow only one radio transmit at a time which
implies that the system needs to send two packets with a repeater
instead of one packet without the repeater. The radios are
desperately trying to communicate directly in order to obtain the best
performance, but are hampered by the repeater which insists on
retransmitting almost every packet.
Yet, there are some systems like that which work. The trick is to
block the direct path, and have everything go through the repeater.
The maximum throughput will still be 1/2 the direct throughput, but
the data rate will be quite constant. In other words, reliable but at
I've had some experience with such installs. On customer in a trailer
park wanted to leach off of a nearby coffee shop wi-fi system.
Unfortunately, someone put a large brick building in between, blocking
the line of sight. Fortunately, the layout was such that I found a
place to install a repeater at 90 degrees from each end, so that the
repeater could see both end points, but the end points could not see
each other. It wasn't as fast as it could theoretically operate, but
it was quite reliable. For the curious, yes, I obtained permission to
install the repeater from the owner after I offered a small bribe.
Since I don't know anything about the location, equipment, potential
interference, etc, I can't offer any specific equipment suggestions.
For repeaters, I've been using:
It's not the best but it does have a few advantages. It runs on 5VDC
from a microUSB connector, so it can work with a solar powered battery
only UPS. It also has several modes besides repeater allowing it to
be used as a wireless client bridge at the end of a CAT5 cable. About
$40 plus tax and ship:
Note that this is NOT a recommendation for your application.
>I want a repeater that is easy to setup, plug in, without having to
>enter the settings for the main ISP router/modem. Any constructive
Ummm... It is better and easier to obtain permission than to obtain
Good luck and think about getting your own ISP service. If you're low
income, on some form of public assistance, and can qualify, try these:
Jeff Liebermann je...@cruzio.com
PO Box 272 http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann AE6KS 831-336-2558