Your RSSI in the first picture is decent, but the Signal to Noise Ratio is a little on the low side for a signal of that quality. Perhaps there is noise on your channel.
The second photo, the signal is poor, with SnR and Modulations to match.
From what I can see, you are getting RF performance that is appropriate for the quality of the links. With cleaner or just generally better Receive Power and SnR, you’ll see 256-qam Modulations consistently.
A Force 300-25 isn’t an apples to apples comparison, because it’s operating in a different band, with way more channels to choose from. The 3GHz channel you’ve selected must not have been as clean as the 5GHz channel you were able to use with the ePMP. I can assure you that if you had a 3GHz channel that was as clean, you would see well over 100Mbps on your Link Capacity and speed tests of the first radio.
Thank you for your responses… as per link planner the 5 SMs we have connected showed good signal with good modulation… so I guess I will continue to see if interference is the root.
Optimal Modulation is 25% in all categories, so that spread is good and designed to be that way.
The link in the last photo, -51.5, 43/43 SnR, the modulations are great, and that is exactly what you should see on a high quality link.
The Receive Fragments Modulation are best when there is 25% in all categories.
Hi @Olympe, sorry the uplink MIR is set to 10mbps so the test with bridging with MIR is correct as this SM MIR profile is set to 100mbps down and 10mbps up. As per this SM, @Neil_Capell explained
@Neil_Capell@Olympe Thank you both for taking the time to help me, I really appreciate it… looks as the issue is solved. I had not enabled LTE co locate feature, which is absolutely a life safer, and got in sync with a LTE provider not to far away from our tower. I thank you again!
So based on above pic I would assume I could have some consistent link tests, using bridging with MIR and I am getting inconsistent results… on test is 44mbps down and then the next is 38mbps, MIR is set to 75 down 10 up… results say its transmitting at 8x/8x mimo B
This is what the AP shows in the session tab for this SM…
Even with your recent changes to try to sync with LTE, it’s still concerning that when you actually run a test you’re losing almost 20% on the downlink. This means that there is still some sort of interference happening and could explain your inconsistent results.
Okay, thank you for your insight… I ran a timed SA on the AP… found the cleanest channel… but ill run it again. Not sure what else to do, earlier in the day this SMs link tests were more consistent. There are 5 total SM and this one seems to be the only one with this issue.
@Eric_Ozrelic my spectrum is not to bad… im average -87 in the channel I am in… the only other 3GHz is a competitor tower running LTE about 3 miles from our tower. Should I try a different LTE frame configuration? What data should I post on the forum to help find a solution?
If you can find out what settings your LTE competitor is using then you can use Cambium’s PMP LTE co-location Tool to find the proper sync settings.
If you can’t get those settings and/or trying different frame configurations doesn’t work then you may need to get as far channel-wise away from them as possible. Last resort would be moving to a different band altogether, like overlaying 5GHz on top of your 3GHz sector and converting those clients that have mystery issues with 3GHz over to 5GHz.
Thank you Eric… competitor is a Major Nation wide WISP so I doubt ill be getting any info. I will see what I can do… I do have the 3ghz medusa stacked with a ek3 5GHz… medusa is underneath the ek3, both at same heading.
My uplink on the 5 450b SM is always 100% so would you say interference is mainly at the SM?
