Hello I have an 9 km link with one solid dish 29dbi on each location. The wireless card I use is an SR5 on default tx power, and for routerboard I use RB433. Attached is a printscreen of my throughput (which I am happy with). I would like to know which tweaks (if any) I could use to get a better CCQ
All of this is with a clear LOS

your signal it's too low...i bet that antennas are the problems. With 28dBi grids and XR5 we have -68 with 20mbps on a 52km link!!! The grids have 110cmx60cm 28dBi gain (5150-5350Mhz). We use 5800Mhz. Made in China, 100$/each.

THe ccq has improved over time by itself. However I see that the pings are 1ms and 2ms but it has occasional spikes up to 200ms, what could provoke this behavior.

While it is possible, the problem is most likely NOT the antennas.

On the 52km link the the above poster mentioned I came up with a theoretical recieve signal of -66.3 when working at a signal rate of 54 Mbps (Tx power of XR5 is 23 dBm and recieve sensitivity of -74) and including 10 feet of LMR400 cable at each end. The resported real world signal of -68 is great. From my experience a link of that caliber is very rare, the antennas must be quite high and not only is the LOS clear but I would guess the first 2-3 fresnel zones are clear as well.

To the OP CCQ is based on a internal calculation that RouterOS makes, and is affected by anything that causes a degradation in the link. This can come in the form of interference, Tx retries, CSMA backoff, LOS/fresnel zone interference.
Based on your antennas and SR5 cards the theoretical signal would be -51.1 again with working at a signal rate of 54 Mbps. I would guess you are seeing a terrain interference issue, be it trees, building, ground, etc.

I have a few 16 km links XR5, 23 dBi panels, signal of around -66, one side is 100 ft, the other 50 ft, I know for fact I have some fresnel zone obstruction and it shows as I cannot achieve a 54 Mbps signal rate even though the signal level would lead one to believe it should. I always tune my individual links to achieve max performance and reliability, I always lock my signal rate down at one step below what the link is capable of if I have any known issues (ie. trees, terrain, etc.).
If you look at the table of signal strength and singal rates that were in your screenshot, you'll notice that it is not going to 54 Mbps, however your signal is flirting with the -74 barrier that would queue RouterOS to try the higher signal rate. Your link may work stable at 48 Mbps but not at 54 Mbps, that being the case if the link attempts 54 Mbps tx retries occur and as a result your ping spikes. I would tune your link at bandwidth testing at the different signal rates and find out if that is the case.

Hope this helps

Cheers

(Tx power of XR5 is 23 dBm and recieve sensitivity of -74)
Cheers

Where did you read that Tx power is 23dBm?
* XtremeRange5 5 GHz
* The World-Record Breaker with Proven 300+km Range
* Featuring Industry Leading 600mW Avg TX Power (1000mW Peak)

you could try not to let default the Tx power

Was wondering if you had the antenna mode set to b or a. because it should be set to b
thanks

With a similar problem I'd welcome some expert opinion on the set-up below:
The client is a 14dB Rootenna with an RB Crossroads running at 17dB. The AP is an RB 433 with a MT R52 running at 17dB on a 12dB omni. Line of sight is 3.35km and clear.

Client RX is fine as is signal-to-noise but Tx is far less than I would have expected, with presumably as a result a low ccq.

The link in question is running at 2442GHz but from the client antenna's point of view there is another AP almost directly beyond the one it is connected to, at 7km, transmitting at 2412GHz. Could this be a problem? Or is is that a 12dB omni isn't up to the job, or is it something I'm totally ignorant of?

Any ideas welcome.