Presently I own a Slate 750s router which I have connected to an ASIAIR device’s Ethernet port. I am connected to the Gl.iNet network through my iPad which is in my house 50 feet away. I am getting on average 1 disconnect per evening with my Astrophotography session. One time I tried connecting to the Gl.iNet with a range of 75 feet and had so many disconnects that I had to abandon the session.
I know that there are several new travel routers out but I don’t know what their connection range and stability might be. Would anyone here have any tested numbers for the travel router with the best range?
Nobody will be able to answer this question because it highly depends on the device, the structures around (walls, floors, trees, whatever) and the environment in general.
I only have one wall but really this would boil down to what each travel router would be capable of. Would there be any difference in the quality of signal that would go through each of these routers?
Umm, 75 feet is just a little over 2 meters, right? Rather, it's closer to the distance where you need signal attenuation when testing some high-performance Wi-Fi equipments.
That unacceptably poor range is certainly a problem. Even my Mango(MT300N-V2) routers have way much better range.
In general residential or commercial environment, normally excellent 2.4GHz connectivity is expected at that distance regardless of existence of reinforced concrete wall which thickness is 300mm or less. Double-glazed low-e glass wall could be problematic but I don't think it's your case.
What's the material and structure of the wall? Personally I'm curious if you encounter that problem even though your router is in normal condition.
Your problem is more likely to be the WiFi repeater GAIN rather than TRANSMIT power. Most GL.iNET routers have good transmit range to cater for the more common usercases but your mileage with the WiFi gain varies from one router to another. I find the newer Slate AX and Beryl AX to have a more decent gain than the older versions.