Just want to point out, your sign loss from attenuation will far exceed antenna placement with those bends.
RF coaxial should never have a 90* bend. If those cables are 2mm thick, then you shouldn’t have any bend sharper than 31* to 45* (~10x to ~6x the thickness of the cable) depending on the cable material.
Very valid point. I tried to be gentle when managing the cable as I am aware of the increases resistivity / signals loss etc… I took this as an opportunity to refresh my mind about this. Worth to note that there is also a chance of inductive current with the loops. Here again I assumes the RG178 cables shielding might be sufficient.
First off, 90° with a 1m radius isn’t as bad as when the bend happens just within a few centimeters. So the radius plays a more important role I’d say.
I found the following article rather interesting to read. The two important catches are:
When a cable is bend, it can suffer “injury” which most often is invisible. That actual injury / damage is causing performance degradation but not the bend itself.
By a rule of thumb the article states that the usual bend radius is five times the diameter of the cable.
In addition I searched for the specs of the RG178 and it seems the min. bend radius is indeed provided with 0.4 in respectively 10.16 mm
Coming back to my cable management. With the knowledge attained I would second your observation that cable management has to be improved. Once I did that, after my new §D printed case arrived, I will post another picture for reference.
I believe providing a picture for reference will be quite helpful for others especially when adding heat sinks and a or even more fans.