Does coax brand make a difference

I started doing an install on my company truck with my current downtime, I got a wilson 2000 and just bought any 'ol coax I could find, which in this case was 9 ft off brand. Would getting, say, a belden have made a difference?

My SWR is really high (no shock there) and I don't have a meter yet so trying to go through the issues one by one, most likely it's grounding but would switching to a higher quality cable help? 18' perhaps? I'm assuming the answer is yes but wanted to know for sure before dropping $30.

 

That's good to hear, yeah it reaches great and also going to a cobra 29 LTD. I'll focus on the grounding then perhaps, really need to get a meter.

 

Yeah might be that, I again, just bought a basic four bolt mount that was made for freightliners, this truck is a '10 columbia.

 

Yeah its ok, appreciate the help. Could be a couple factors but grounding certainly seems like the biggest culprit.

 

So I went and bought the belden cable, results are the ant light no longer comes on when I key the mic and the built in swr meter now shows at about 2 on 1, 21 and 40 which it was well over 3 before.

Still want to get a proper meter and check it but this seems like a good improvement.

 

Final update on this, bought a swr meter and it tested at 1.5. Good enough for me.