You are here

Any use?

6 posts / 0 new
Last post
G0OFY
G0OFY's picture
Any use?

There has been topics recently about Ubiquiti (and other) devices being locked out to prevent modification. Trawling the net I came across this site. http://wiki.compex.com.sg/index.php?title=Overview_of_CompexWRT
These devices sell for around $60. Could they be used as mesh nodes. I haven't got a clue as to what would be required to construct the equivalent of a Ubiquiti unit, but it does appear that it will take the mesh software. Perhaps there is a "chasis basher" out there somewhere who could cobble together a working prototype. 

AE6XE
AE6XE's picture
AREDN is derived from OpenWRT

AREDN is derived from OpenWRT.  Consequently, if a given hardware device is supported by OpenWRT, then it clears a hurdle to be considered for AREDN support.   This particular device and URL reports to support OpenWRT.    There are other hurdles, e.g. is it stable, is it a usable device for a mesh node in our expected environments,  does it give us a capability or benefit we don't already have, does it lower costs to be deployed, etc.

Joe AE6XE

K5DLQ
K5DLQ's picture
Does it have a frequency

Does it have a frequency agile atheros chip?

K5DLQ
K5DLQ's picture
Ah.  It looked looks like a

Ah.  It looked looks like a yes to my own question

KE2N
KE2N's picture
card

There are several vendors who make this kind of product (mini-PCI WIFI card) MikroTik being one.  The products on the Complex web site show that their stuff is FCC certified. Starting mid year they will not be able to claim FCC certification unless they have some way to prevent unauthorized software from being loaded.  It looks to me like they start with OpenWRT and then add patches for the different products.  I think they require you to have a password to download the patches.  But still if the patches are source code then there is nothing to prevent you from modifying the way it works so I don't think the FCC would accept that.

Of course, if you do not market it in the US you do not need the FCC certification and hams in the US can still buy small quantities for their own use by filling out an import form (just like for the Ubiquiti 3 GHz stuff).

If you look at http://wiki.compex.com.sg/wiki/Manual:Network/WiFi however, you will see that the example given uses a AR9344 chip. This chip unfortunately is not "frequency agile."

I guess there will be no Atheros (ARxxxx) chips in the future only Qualcom-Atheros or QCAxxxx.  I do not know how you can figure out which of those chips will cover extended frequencies, but I suppose the folks in the OpenWRT community have the inside info.

AE6XE
AE6XE's picture
The linux opensource wireless

The linux opensource wireless driver used in AREDN is called "ath9k" and is the bases for which we're able to extend frequencies.   It currently supports all the following chips.  This doesn't necessarily mean that someone has fully merged this opensource code base into OpenWRT releases for every chipset to be considered for AREDN support, or that it's stable.   However, the list is narrowed down.  

Beyond the ath9k chipsets, anything is possible, but only speculation until investigated.  There's also an "ath10k" driver in existence out there that may or may not allow us to extend frequencies for the respective chipsets and devices.     

The list of known APs which are compatible with the ath9k driver is located here:  https://wireless.wiki.kernel.org/en/users/drivers/ath9k/products/aps 
 

Supported chipsets

SB = single-band 2.4GHz 
DB = dual-band 2.4GHz or 5GHz

  • AR2427 1×1 SB (no 11n)
  • AR5008:
    • AR5418+AR5133
    • AR5416+AR5133
    • AR5416+AR2133
  • AR9001:
    • AR9160 2×2 DB
    • AR9102 2×2 SB
    • AR9103 3×3 SB
  • AR9002:
    • AR9220 2×2 DB
    • AR9223 2×2 SB
    • AR9227 2×2 SB
    • AR9280 2×2 DB
    • AR9281 2×2 SB
    • AR9285 1×1 SB
    • AR9287 2×2 SB
  • AR9003:
    • AR9380 3×3 DB
    • AR9382 2×2 DB
    • AR9331 1×1 SB
    • AR9340 2×2 DB
  • AR9004:
    • AR9485 1×1 SB
    • AR9462 2×2 DB
    • AR9565 1×1 SB
    • AR9580 3×3 DB
    • AR9550 3×3 DB

   

Theme by Danetsoft and Danang Probo Sayekti inspired by Maksimer