Most cost effective source for residential wire and conduit?

Johnny Mac said

I agree with you, and that was My point. Only thing I can find more cost effective is what they refer to as "outdoor lighting wire" (only has 2 conductors) where as 10/2 is usually 3 conductors. Neutral, ground, and hot. May not be perfect in my lingo, as I Just a residential grade /diy guy. But that's my understanding. Like how A "8/3" wire is technically 4 total. Has 2 hots, for like a 220 plug. Then neutral, and a ground.

I'm sure you know everything above, I'm more stating it so someone can correct me if I'm completely wrong lol. I wire my own home projects, and 220 plugs and such. But 100% not an electrician.

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You’re gonna need bigger than 10/2. On 120VAC, the voltage drop after about 100-150ft will play into it. I would call your utility, they usually have an electrical engineer that for free, will tell you what you need to ensure you have a full 120 volts at the end of that 500 ft. How many amps you need will play a big part of that.

just so you know, I’m remote as well, from where my transformer is being installed, to where it will enter my house is 586 ft. For under ground cable for a 200 Amp service, I have to go #0000. It’s 56 bucks a foot.
Now I realize that you’re probably just going to need 5-15 amps to that antenna, so you might be okay. But I’m gonna guess 10/2 is gonna be barely capable at that distance. General rule of thumb from what I’ve been told by my contractors and engineers, is 150 feet is about the max for 20 amps on 10/2. But do some checking