Hi,
today i get the first CAP ac´s from Distribution.
I Start to test… swap WAP ac to CAP ac,
same destination, same distance , same position of Macbook.
WAP ac:
866 Mbit Brutto Shows -72db
CAP ac:
655 MBit Brutto Shows -84db
Real throughput on CAP ac i did not see more than 30 Mbit
Thats what Mikrotik delivers with Wave 2?
Tested with ROS 6.41.2
mistry7
wAP ac has 3 chains, cAP ac has two.
-Chris
866 MBit is 80 MHz, with 2 Streams
3 chains @80Mhz is 1300MBit
At any rate I doubt the macbook has three chains.
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Are you able to test a hAP ac2 as well?
I will get the first one in the next week
Macbooks do have Three chains, btw.
That depends on the model of MacBook. In this case it probably only supports two chains since it operated at 866 Mbps with the wAP AC. If it had three chains it would have instead negotiated 1.3 Gbps or maybe 877 Mbps with lesser signal strength.
But the point of the original post is that the cAP AC appears to have an inferior antenna design. I hope that other units (or even the hAP ac2) do not exhibit this issue, otherwise we’ll have to wait for an IPQ-4018 wAP AC.
The new hAPac^2 and cAPac have two chains, since most devices only have 2 chains and the third chain is rarely used.
What about load balancing between chains?What if i have 20 + various devices which have mix of 1 or 2 chains, arent all 3 chains on Mikrotik device used and give better overall throughput?
Wave 2 is supposed to do that. But after some research, I learned that this is easier said than done. MU-MIMO is better with static clients, not so good with moving ones.
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Even with reduction in chain count, this shouldn’t affect signal strength. The difference between -72 and -84 is quite large. Is the TX power the same? Can you test without any of the cases on?
I will try it without case tomorrow
But I think I could be a wireless driver problem, I see really bad reported signal on Lhg ac, but it modulates with high rates, i will investigate this
wAP and cAP is not a fair comparison, wAP is a waterproof device, designed to also be used outdoors. It has a different antenna design.
macbook pro models have. mb air is “just” 2chain.
https://www.custompcreview.com/reviews/testing-apple-macbook-pro-touchbar-wi-fi-3x3-mimo-make-difference/
Why not design all access points (whether wAP, cAP, or hAP) with similar antenna? There are advantages to having an improved antenna for indoor access points, such as lower access point density or improved client reception. And if the wAP has the best antenna, and the brochure indicates that it can be mounted indoors or outdoors, why not have it be the only access point?
Are there antenna patterns for the devices anywhere so we can see how best to utilize their antenna designs? 10dB difference between products is massive, especially when they are both listed as having 2dB antennas.
im actually very keen on purchasing cap ac… but mikrotik needs to test this antenna complaint.
in fact, i questioned them about this in my email conversation and they claim that caps ac antenna should be better than wap ac if anything.
after replace cAP lite with cAP AC i must say its shit..for now i cant get more then 60Mbit on 2.4GHz and same speed its on 5GHz.
6.42rc30 works better in some ways, time to time i get 200Mbits this speed its not stable.For no reason slows down in time.
I have similiar experience. Speedtest.net shows ~180mbps gradually settling on ~80mbps or worse; iperf3 shows even less impressive numbers 
I did some comparisons between cAP AC and my good old hAP AC.
Test conditions/parameters:
802.11an two chains (My Lenovo T420 laptop doesn’t have 802.11ac)
hAP AC was running 6.40.1; cAP AC was running 6.40.6
Both hAP AC and cAP AC were running virtually the same wireless interface settings:
On cAP AC:
set [ find default-name=wlan2 ] band=5ghz-a/n/ac channel-width=20/40/80mhz-Ceee country=lithuania disabled=no distance=indoors frequency=auto mode=ap-bridge rx-chains=0,1 \
security-profile=profile1 ssid=CAP5 tx-chains=0,1 wireless-protocol=802.11
.
On hAP AC:
set [ find default-name=wlan2 ] adaptive-noise-immunity=ap-and-client-mode band=5ghz-a/n/ac channel-width=20/40/80mhz-Ceee country=lithuania disabled=no frequency=auto \
mode=ap-bridge security-profile=profile_lukoramu ssid=MTLR wireless-protocol=802.11
.
Both chose the same frequency (5180MHz). I kept only one AP turned on at the same time, so no interference between them.
Wireless registration stats on cAP AC:
0 interface=wlan2 mac-address=8C:70:5A:79:C2:C8 ap=no wds=no bridge=no rx-rate="300Mbps-40MHz/2S/SGI" tx-rate="270Mbps-40MHz/2S" packets=346474,437622
bytes=372188772,541051178 frames=346474,437626 frame-bytes=372881728,538425898 hw-frames=385547,440278 hw-frame-bytes=425802032,556703304 tx-frames-timed-out=0
uptime=9m22s last-activity=0ms signal-strength=-58dBm@HT40-7 signal-to-noise=42dB signal-strength-ch0=-64dBm signal-strength-ch1=-60dBm
strength-at-rates=-55dBm@6Mbps 1s870ms,-62dBm@12Mbps 8m26s160ms,-52dBm@48Mbps 5m5s810ms,-50dBm@54Mbps 9m21s820ms,-57dBm@HT40-4 9m20s790ms,-54dBm@HT40-5 6m54s360ms,-
55dBm@HT40-6 4m50s810ms,-58dBm@HT40-7 0ms
tx-ccq=98% p-throughput=234464 last-ip=192.168.198.194 802.1x-port-enabled=yes authentication-type=wpa2-psk encryption=aes-ccm group-encryption=aes-ccm
management-protection=no wmm-enabled=yes tx-rate-set="OFDM:6-54 BW:1x-2x SGI:1x-2x HT:0-15"
.
Wireless registration stats on hAP AC:
0 interface=wlan2 mac-address=8C:70:5A:79:C2:C8 ap=no wds=no bridge=no rx-rate="300Mbps-40MHz/2S/SGI" tx-rate="54Mbps" packets=729,874 bytes=618384,118750 frames=729,876
frame-bytes=619838,113744 hw-frames=753,1046 hw-frame-bytes=664555,152832 tx-frames-timed-out=0 uptime=35s last-activity=0ms signal-strength=-46dBm@6Mbps
signal-to-noise=58dB signal-strength-ch0=-49dBm signal-strength-ch1=-50dBm signal-strength-ch2=-59dBm
strength-at-rates=-46dBm@6Mbps 70ms,-45dBm@54Mbps 35s,-50dBm@HT40-4 34s70ms,-50dBm@HT40-5 33s970ms,-50dBm@HT40-6 33s750ms,-51dBm@HT40-7 0ms tx-ccq=90%
p-throughput=30502 distance=1 last-ip=192.168.198.194 802.1x-port-enabled=yes authentication-type=wpa2-psk encryption=aes-ccm group-encryption=aes-ccm
management-protection=no wmm-enabled=yes tx-rate-set="OFDM:6-54 BW:1x-2x SGI:1x-2x HT:0-15"
.
TCP upload results:
cAP AC:
C:\Users\lukoramu\Documents\orphan\iperf>iperf3 -c 84.32.123.242
Connecting to host 84.32.123.242, port 5201
[ 4] local 192.168.198.194 port 52515 connected to 84.32.123.242 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 6.38 MBytes 53.2 Mbits/sec
[ 4] 1.00-2.00 sec 19.2 MBytes 162 Mbits/sec
[ 4] 2.00-3.01 sec 18.5 MBytes 154 Mbits/sec
[ 4] 3.01-4.01 sec 17.5 MBytes 147 Mbits/sec
[ 4] 4.01-5.01 sec 13.9 MBytes 116 Mbits/sec
[ 4] 5.01-6.01 sec 0.00 Bytes 0.00 bits/sec
[ 4] 6.01-7.01 sec 0.00 Bytes 0.00 bits/sec
[ 4] 7.01-8.01 sec 0.00 Bytes 0.00 bits/sec
[ 4] 8.01-9.00 sec 0.00 Bytes 0.00 bits/sec
[ 4] 9.00-10.00 sec 0.00 Bytes 0.00 bits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 75.5 MBytes 63.3 Mbits/sec sender
[ 4] 0.00-10.00 sec 75.5 MBytes 63.3 Mbits/sec receiver
.
hAP AC:
C:\Users\lukoramu\Documents\orphan\iperf>iperf3 -c 84.32.123.242
Connecting to host 84.32.123.242, port 5201
[ 4] local 192.168.198.194 port 52581 connected to 84.32.123.242 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.01 sec 20.6 MBytes 172 Mbits/sec
[ 4] 1.01-2.00 sec 20.1 MBytes 170 Mbits/sec
[ 4] 2.00-3.01 sec 20.5 MBytes 171 Mbits/sec
[ 4] 3.01-4.01 sec 20.8 MBytes 174 Mbits/sec
[ 4] 4.01-5.01 sec 20.5 MBytes 171 Mbits/sec
[ 4] 5.01-6.01 sec 20.4 MBytes 171 Mbits/sec
[ 4] 6.01-7.01 sec 20.6 MBytes 173 Mbits/sec
[ 4] 7.01-8.01 sec 20.1 MBytes 169 Mbits/sec
[ 4] 8.01-9.01 sec 19.9 MBytes 166 Mbits/sec
[ 4] 9.01-10.01 sec 20.4 MBytes 170 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.01 sec 204 MBytes 171 Mbits/sec sender
[ 4] 0.00-10.01 sec 204 MBytes 171 Mbits/sec receiver
.
TCP download results:
cAP AC:
C:\Users\lukoramu\Documents\orphan\iperf>iperf3 -c 84.32.123.242 -R
Connecting to host 84.32.123.242, port 5201
Reverse mode, remote host 84.32.123.242 is sending
[ 4] local 192.168.198.194 port 52521 connected to 84.32.123.242 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.01 sec 1.10 MBytes 9.18 Mbits/sec
[ 4] 1.01-2.01 sec 0.00 Bytes 0.00 bits/sec
[ 4] 2.01-3.01 sec 0.00 Bytes 0.00 bits/sec
[ 4] 3.01-4.01 sec 0.00 Bytes 0.00 bits/sec
[ 4] 4.01-5.00 sec 0.00 Bytes 0.00 bits/sec
[ 4] 5.00-6.00 sec 0.00 Bytes 0.00 bits/sec
[ 4] 6.00-7.00 sec 0.00 Bytes 0.00 bits/sec
[ 4] 7.00-8.00 sec 2.48 MBytes 20.8 Mbits/sec
[ 4] 8.00-9.01 sec 0.00 Bytes 0.00 bits/sec
[ 4] 9.01-10.01 sec 0.00 Bytes 0.00 bits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.01 sec 3.79 MBytes 3.18 Mbits/sec 113 sender
[ 4] 0.00-10.01 sec 3.71 MBytes 3.11 Mbits/sec receiver
.
hAP AC:
C:\Users\lukoramu\Documents\orphan\iperf>iperf3 -c 84.32.123.242 -R
Connecting to host 84.32.123.242, port 5201
Reverse mode, remote host 84.32.123.242 is sending
[ 4] local 192.168.198.194 port 52587 connected to 84.32.123.242 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 20.3 MBytes 170 Mbits/sec
[ 4] 1.00-2.00 sec 20.1 MBytes 169 Mbits/sec
[ 4] 2.00-3.00 sec 20.8 MBytes 174 Mbits/sec
[ 4] 3.00-4.00 sec 20.5 MBytes 171 Mbits/sec
[ 4] 4.00-5.01 sec 20.6 MBytes 172 Mbits/sec
[ 4] 5.01-6.01 sec 20.2 MBytes 169 Mbits/sec
[ 4] 6.01-7.01 sec 20.8 MBytes 174 Mbits/sec
[ 4] 7.01-8.00 sec 20.8 MBytes 176 Mbits/sec
[ 4] 8.00-9.00 sec 20.7 MBytes 174 Mbits/sec
[ 4] 9.00-10.00 sec 20.9 MBytes 175 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 206 MBytes 173 Mbits/sec 0 sender
[ 4] 0.00-10.00 sec 206 MBytes 173 Mbits/sec receiver
.
Thoughts? Ideas?
Maybe it’s a compatibility issue?.. Tomorrow I will do the test with a newer laptop, which has an AC card..
P.S. I noticed a big difference in Tx/Rx signals too (see above)