Okay, I followed the suggestions, and have tried the following:
First, to 1492.. thanks for that testmy.net link, that works really well! I also found (I think someone here told me about it, but I can't find it now??) an Android app, "Wifi Analyzer" on Google play that is absolutely fantastic!!!!! HIGHLY recommend it if you are having problems or questions about your service!! VERY handy app!!
Now: took the phone, with the "Wifi Analyzer" on, and wandered around inside the fiver and then outside the fiver and then into the Casita where the router is. Basically, the signal is off the chart inside the Casita, but inside the fiver the signal is a pretty poor.
BUT, I also took my laptop and went inside the Casita, had the Netgear wifi dongle to get "N" speeds and went online. Using the "testmy.net" (good link, but watch what you click on, the adverts can be confusing!!) and also "speedtest.net", I found out that the best I could get with the best signal is 1.3mbps DL and .4mbps UL.
Soooo, then I went back outside to the fiver, turned the TP-Link 450mbps wifi card back on, and connected to the router, ran both the testmy.net and speedtest.net tests and found that what I was getting out in the fiver was NO better than inside the Casita.
So, I guess it is what it is. We are tenants, here for the season and I guess we accept it as it is, now that we know it's the service not the equipment.
Many thanks to all for the suggestions and the links, I hope this might help someone else. I was almost ready to start throwing money at repeater/booster equipment until I found out it would serve no purpose.
Still, those two links and that app for the phone are great!! I'll be using those again, likely very frequently as we travel.
Oh yeah, one other thing, kind of irrelevant but may be interesting to someone?? After all the testing, I disconnected from the Casita router and turned my phone hotspot on and connected and re-ran the tests with testmy.net and speedtest.net. W O W !! 10.x download and upload!! Verizon, 4G LTE for those who care, fast, but expensive if you're going to be doing a lot of surfing, just sayin'!
OK, more clarification...
On a private lot in Yuma area...two RV spots and a Casita (little house). Owner is not here yet, just us. We have the place, and the router, to ourselves.
The router is a CenturyLink, and to get it started, they had to reset it because it had been off for....six months? Now on, it sits near the ceiling in the Casita, which is about ??? 34-40 feet from where my computer sits, inside our fiver and down low.
No campground involved, no one else on this thing, just us, two computers and a phone. We've been here and on the wifi since Monday (now Friday evening) and this thing is SLOW! At home, we have cable dsl, 1000mbps, and wifi to the trailer outside is about the same distance from the router as we are here, but the speed inside the trailer here VS at home...no comparison. Almost...might as well be on dial up again.
So there we are...
Oh yeah, why is it so heavy? It's got a radiator to cool it off, liquid cooling in a computer...and it ain't new. I bought this in 2009, it's old...like me!!
OK, I "manage" to get most of my 'tech stuff' handled, but this has me stumped.
Right now we're 'parked' in southern AZ. If we use our phone (4g LTE) as a hotspot we get great speed. But using the wifi that comes with our parking spot (we're on a private lot) the speed sucks, and its hardwired dsl!
I just installed a TP-Link wifi card in the pc, supposedly capable of 450mpbs. It's in an Alienware desktop that sits on the floor of our slide out, on the 'away' side of our rv, about 40(?) feet from the wall wherein the wifi router resides. (I might mention we are in an aluminum framed fifth wheel, if that makes a difference?)
If I open the TP-Link interface, it says our network "rate" is between 10-20 mbps and if we try and download anything that has video (weather channel) it is sooooo slow, the video stops multiple times just to catch up!!
What can I do about this? Is there some kind of gizmo that I can put outside our fiver to receive and boost the signal inside to the PC?
The PC is pretty much stuck where it is...it weighs 89 pounds so the floor is where it's gotta stay! (Yeah, I know, I could leave it home and use the laptop, but it's WAY more computer than my laptop, what can I say?
Anybody got any ideas what kind of gizmo I can get to boost the outside wifi to the inside wifi antennas so that my speed gets better?
Please??? And thanks!