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Ubiquiti Power Beam M5-620 reaches only 80MBPS?

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VE3BYS
VE3BYS's picture
Ubiquiti Power Beam M5-620 reaches only 80MBPS?

Hi Everyone,

This is my first post here. Looking for some help. I have installed Ubiquiti Power Beam M5-620 but the data transfer rate will only max out at 80MBPS with the AREDN firmware? I am not able to get the full speed of 130MBPS. Is there a reason for this? I have some questions and any help/directions will be appreciated. Note: the original hardware and firmware combination that comes with M5-620 is capable of 130MBPS.

a) Does the AREDN firmware need to be tweaked to get the 130MBPS? If so what are the tweaks? Please help.
b) If a) above cannot be done then is there other hardware that is supported by AREDN that would enable 130MBPS rates? Any one tested this? 
c) Any other ideas?

Thanks so much.

nc8q
nc8q's picture
get the full speed of 130MBPS

a) Does the AREDN firmware need to be tweaked to get the 130MBPS? If so what are the tweaks? Please help.
b) If a) above cannot be done then is there other hardware that is supported by AREDN that would enable 130MBPS rates? Any one tested this?
c) Any other ideas?

Actually, the maximum TxMbps is 144.4 with 20 MHz bandwidth.
Provided there is sufficient SNR and a path without reflections.
What is your SNR? Your 'Ratio' must be rather high to achieve maximum TxMbps.

If your test device is RF linked to another device...
To see what modulation schemes are being chosen:
ssh into the device
type: cat /sys/kernel/debug/ieee80211/phy0/netdev:wlan0/stations/
press the 'tab' key and select the MAC of the 'other' device.
type rc_stats
Press 'enter'.

MCS15 in both horizontal and vertical with SGI will result in maximum TxMbps.
(Modulation Coding Scheme, Short Guard Interval)

a) No. None.
b) No. Only need a strong signal and a path without reflections. I have had lots-of-fun testing using rc_stats.
c) Share with us your SNR values.

Chuck

VE3BYS
VE3BYS's picture
Thank you Chuck.

Thank you Chuck. For the quick answer. I will test this and get back.

Romeo.

AA7AU
AA7AU's picture
How does this work?

On my tested aredn device, I find that "cat /sys/kernel/debug/ieee80211/phy0/netdev:wlan0/stations/" is a folder not a file and "cat" won't seem to work on a folder. "rc_stats" at the CLI when ssh into "BusyBox v1.30.1 () built-in shell (ash)" is "not found". I do see a list of MAC addresses at that folder location.

Where am I confused on this?

TIA,
- Don - AA7AU

nc8q
nc8q's picture
folder not a file

Hi, Don:


"I find that "cat /sys/kernel/debug/ieee80211/phy0/netdev:wlan0/stations/" is a folder not a file"
Yep. That is where you
"press the 'tab' key and select the MAC of the 'other' device.
type rc_stats"
Oopps. "type rc_stats, then press 'enter'".
:-|
You can type 'rc' then press tab, then press 'enter'.

Sorry.

Chuck
 


Legend:
type "type the characters".

Sample:
root@NC8Q-M5-Kett:~# cat /sys/kernel/debug/ieee80211/phy0/netdev:wlan0/stations/64\:d1\:54\:6e\:9c\:2f/rc_stats
             best   ____________rate__________    ________statistics________    _____last____    ______sum-of________
mode guard #  rate  [name   idx airtime  max_tp]  [avg(tp) avg(prob) sd(prob)]  [retry|suc|att]  [#success | #attempts]
HT20  LGI  1         MCS0     0    1477     4.8       4.8      95.7      0.0       3     0 0           284   299      
HT20  LGI  1         MCS1     1     738     9.7       9.7      95.1      0.0       4     0 0           417   491      
HT20  LGI  1         MCS2     2     492    14.6      12.2      84.4      0.0       5     0 0          2038   2390     
HT20  LGI  1      P  MCS3     3     369    17.0      14.6      75.2      0.0       5     0 0            64   149      
HT20  LGI  1         MCS4     4     246    24.4       7.3      29.8      0.0       0     0 0             2   38       
HT20  LGI  1         MCS5     5     185    29.2       0.0       0.0      0.0       0     0 0             0   38       
HT20  LGI  1         MCS6     6     164    31.7       0.0       0.0      0.0       0     0 0             0   38       
HT20  LGI  1         MCS7     7     148    34.1       0.0       0.0      0.0       0     0 0             0   38       
HT20  LGI  2         MCS8    10     738     9.7       9.7      97.1      0.0       4     0 0          1092   1216     
HT20  LGI  2   B     MCS9    11     369    17.0      17.0     100.0      0.0       5     0 0          3896   4611     
HT20  LGI  2     D   MCS10   12     246    24.4      17.0      64.6      0.0       5     0 0          1154   1460     
HT20  LGI  2         MCS11   13     185    29.2       0.0       0.0      0.0       0     0 0             0   37       
HT20  LGI  2         MCS12   14     123    36.6       0.0       0.0      0.0       0     0 0             0   38       
HT20  LGI  2         MCS13   15      92    43.9       0.0       0.0      0.0       0     0 0             0   39       
HT20  LGI  2         MCS14   16      82    46.3       0.0       0.0      0.0       0     0 0             0   38       
HT20  LGI  2         MCS15   17      74    48.8       0.0       0.0      0.0       0     0 0             0   38       
HT20  SGI  1         MCS0    30    1329     4.8       4.8     100.0      0.0       0     0 0             1   1        
HT20  SGI  1         MCS1    31     665     9.7       9.7     100.0      0.0       4     0 0           655   758      
HT20  SGI  1         MCS2    32     443    14.6      12.2      72.0      0.0       5     0 0          2366   2779     
HT20  SGI  1         MCS3    33     332    19.5      12.2      57.1      0.0       5     0 0           160   247      
HT20  SGI  1         MCS4    34     222    26.8       9.7      36.8      0.0       0     0 0             1   38       
HT20  SGI  1         MCS5    35     166    31.7       0.0       0.0      0.0       0     0 0             0   39       
HT20  SGI  1         MCS6    36     148    34.1       0.0       0.0      0.0       0     0 0             0   38       
HT20  SGI  1         MCS7    37     133    36.6       0.0       0.0      0.0       0     0 0             0   38       
HT20  SGI  2         MCS8    40     665     9.7       9.7      95.4      0.0       4     0 0          1046   1201     
HT20  SGI  2    C    MCS9    41     332    19.5      17.0      81.5      0.0       5     0 0          5537   6275     
HT20  SGI  2  A      MCS10   42     222    26.8      26.8      90.4      0.0       5     4 6          1032   1348     
HT20  SGI  2         MCS11   43     166    31.7      12.2      36.8      0.0       0     0 0             1   37       
HT20  SGI  2         MCS12   44     111    39.0       0.0       0.0      0.0       0     0 0             0   38       
HT20  SGI  2         MCS13   45      83    46.3       0.0       0.0      0.0       0     0 0             0   39       
HT20  SGI  2         MCS14   46      74    48.8       0.0       0.0      0.0       0     0 0             0   38       
HT20  SGI  2         MCS15   47      67    51.2       0.0       0.0      0.0       0     0 0             0   38       

Total packet count::    ideal 18750      lookaround 996
Average # of aggregated frames per A-MPDU: 1.0
root@NC8Q-M5-Kett:~#
enter = "type the characters, then press the 'enter' key."
 

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