WRUB458

In this case you should at least ground the shield of the coax before it enters the house. This would be a minimum requirement, because your antenna will accumulate static charge just from the wind, no lightning necessary. Give static a path to the ground other than through your radio. Bulkhead N or PL-type connectors can be used at the bottom of your mast or at the entry point into the house.
Better solution is to use lightning arrester certified for 500MHz, as mentioned above, and a proper grounding wire and a dedicated grounding rod near the mast, bonded with the house grounding rod by #6 or bigger wire. This method is according to the code. I myself do have rod for the mast, bonded with the house ground by #4 wire, but I only ground the shield of the coax. Where I live, lightnings happen once in 10 years.

All masts should be grounded and all fixed location antennas should be connected through a lightning arrester where they pass into the house. A lightning arrester grounds the shield of the coax and also helps protect the radio from static electricity buildup. 

I use one of these antennas and in my area, it is the only way I can hit some local repeaters, so it does make a difference.  Just keep in mind that it is directional.  I can hit some close by repeaters from the back side of the antenna but I can also hit those repeaters from a hand held.

Worth mentioning is that you'd want that Yagi oriented for vertical polarization to match mobile or HT orientation, not horizontal (like old TV antennas tended to use).
 

Whichever antenna or mount you decide to use, the key is to mount it as high as possible as height increases the range you will cover when transmitting.

Congratulations!  I think you’ll enjoy it. 
 
This thread by another forum user makes the Tram 1486 antenna sound good:
It really depends on how you want to use your radios. If you only want to talk between work and your house, a directional antenna like a Yagi, on a mast at your house and pointed at your place of work might be just what you want. 
If you want to be able to travel in any direction around your house, you’ll want an omnidirectional antenna like the Tram. 
People even use magnetic mount vehicle antennas on steel pizza pans. 
Half the fun is figuring it all out. 

Well I did it. I purchased the Wouxun KG 1000 from buy two way radio. Done. That and my 905’s …antenna is all that left for the 1000….thoughts?

Well I did it. I purchased the Wouxun KG 1000 from buy two way radio. Done. That and my 905’s …antenna is all that left for the 1000….thoughts?

I think a few other users can vouch as well, they aren't necessarily the least expensive option, but I've had good dealings with https://used-radios.com/ , including via eBay (username Erac1). Bought 4 radios from them, zero issues, and quick to respond on a couple after sale questions I had.

Call your local 2-way radio shop. Shops like mine sell good used Motorola or Vertex analog UHF mobiles all day long at under $200, tested, tuned, and ready for install. We don't bother with eBay anymore due to all the seller fees and payment charges. 

Radioddity.com, Baofengtech.com. search Ebay for used higher end radios.

“If you use that same transceiver to communicate directly to a mobile radio, it is functioning as a base station.
The difference is in usage.  Referring to a radio as a base station doesn’t prohibit it from being used to communicate through a repeater.” 
 
You make things clearer for me and I appreciate that! Thank you 

When you use a transceiver at a fixed location to communicate to a mobile radio through a repeater, it is functioning as a control station. Please note that it “May also” be used to control the repeater.  It’s not a requirement that a control station be able to fully control every function of the repeater and communicating through a repeater could be considered a level of control because you are causing the repeater to relay your transmissions.
If you use that same transceiver to communicate directly to a mobile radio, it is functioning as a base station.
The difference is in usage.  Referring to a radio as a base station doesn’t prohibit it from being used to communicate through a repeater. 

If I was you, I'd start cheap, experimenting on the way. I had a years of good performance of Browning BR-6140 on 20' mast over single-story house (about 30' height over the ground). My setup also included 40' of LMR-400 and 40W radio, Kenwood TK-880H. I live in a center of a mostly flat valley circled by the mountains, and this setup allowed me to talk reliably to another mobile TK-880H in the car, and less reliably (local dip, buildings, etc) to handheld. The max distance on a flat area was 8 miles or so. Of course, when you start to climb up on the valley rim, you'd have crystal clear communication with handheld as well. BR-6140 is a unity gain, not 6dB.
I now have Diamond X50-NA (at 27' over the ground), which is a ham antenna, and have worse SWR than BR-6140 on GMRS frequencies. It works about the same, though. Diamond X50 is a unity gain too.
The repeaters is always a good option, because you would not need to invest on base station, antenna, etc. However, repeater it is somebody else's radio, not controlled by you.

Is this accurate?  Why would a base station at my house using a mobile radio not be allowed to use a repeater?

10 miles is not really far, but can be easy or difficult, depending on terrain. That was already pointed out by others. You very likely will need an elevated antenna on one side. In your house with your family, likely. The higher antenna is, the better.

But it sure was impressive! Weren't you impressed by how smart he thinks he made himself look? I know I sure am!  Too bad we can't "pin" replies like this to the top of the list for everyone to enjoy.
...Weird that he has a ham-radio callsign for his user-name... Just sayin...

An overly technical wandering data dump like this does nothing to help the guy.
Also, some jobs prohibit cell phones in order to minimize internet surfing, prevent photography, or control wifi devices. Although I’m curious what the situation is, the OP has no obligation to explain the reasons to me or you. 

Yes, both the Midland Mxt500 or the Wouxun KG1000 will work just fine with the KG905.  Whether they can communicate over that distance is subject to a lot of different variables, like I mentioned earlier.
Because I have no personal experience with base station antennas I cannot make a recommendation, but there are lots of threads here that discuss base station antennas.
It sounds like you have two or more KG905 radios.  If that’s true, have you tried them talking to each other to see what kind of range you get?  
Then, do some research to see what might exist for repeaters.  I’ll post this and then go look at the repeater listing for San Antonio.  Repeaters are usually set atop a hill or elsewhere with their antennas raised up where they can be “seen” from a wide area.  If there’s a repeater in your area that you can reach from your workplace and from your home, that would possibly allow you to communicate without needing a base station or base station antenna.  Of course that doesn’t mean you should not get a base station, but anything that makes communicating more reliable is a good thing.
I’ll add whatever I find about repeaters here: It appears there’s a vibrant community of repeaters (at least five different repeaters) in your area.  Here’s a website the community maintains: http://1510.node.gmrslive.com/supermon/
Best wishes as you learn about this.  

Color me perplexed... But if your work site prohibits cell phones (which ARE a type of RADIO), why would they permit you carry/use a GMRS radio (which is probably sending out even MORE power into the environment than any cell phone -- cell phones automatically reduce power based upon the signal strength they receive from the tower, and tend to operate at less than 1W).
If you meant that there is just no cell phone coverage at the work site, that is a different matter... Not a "cannot use" description which (to me, having spent 26 years in a black program where we couldn't even bring a cell phone [or calculator with memory] into the building) implies an externally imposed restriction. In contrast "cell phones don't work" implies a physical constraint in the environment.
ANY GMRS radio will "work with" any other GMRS radio -- though the high power units (mobiles/bases may not include channels "8"-"14" which are limited to 0.5W ERP NFM (Note, the ERP limit basically means a true base won't have them regardless of what it has for Low Power; any gain antenna would result in exceeding the ERP limit). BASE stations are NOT permitted to use repeaters.
If you haven't yet, I strongly recommend you study https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D/part-95/subpart-E
Unfortunately, there are hand-helds that CAN exceed the ERP for the interstitial channels -- by connecting a gain antenna to the unit; but seems to be "ignored" by FCC certification (perhaps on the basis that most will just be using highly inefficient rubber ducks).
Also note that true BASE stations are NOT allowed to use repeaters! (In ancient days, base stations weren't even permitted to talk to other base stations!), They are simplex only!
In the 2017 reorganization of GMRS and FRS, they essentially set down a standard for channel numbering.
"1"-"7" are the 462MHz interstitials
"8"-"14" are the 467MHz interstitials
"15"-"22" are the 462MHz main channels (simplex)
"23"-"30" (alternatively "RP15"-"RP22", or variants thereof with an "R") are repeater (duplex) channels -- the radio transmits on 467MHz and receives on 462MHz (the repeater swaps that -- listening on 467 and transmitting on 462).
 
However
Putting up a 50W base likely wouldn't help your situtation -- if the (nominal) 5W hand-helds can't reach that distance, a base with minimal antenna system isn't going to help. The antenna is the key for distance -- using a 6dB (or even more, a 9dB) gain antenna, mounted as high is feasible (take into account zoning restrictions -- in my town AMATEUR antennas may be mounted at 70 feet, but ALL OTHER antennas are limited to 35 feet; about the height of standard "telephone"/power poles. [antenna ratings are somewhat confusing as to whether they are in dBi or dBd (isotropic -- an imaginary point source radiating in a perfect sphere vs dipole -- a half-wave wire radiating in a doughnut shape. A 6dBi would be about 3dBd. 3dBd would have an ERP about twice that of a simple dipole antenna; 5W into a 3dBd antenna would seem like 10W into a pure dipole... And would receive similarly).
Once you have the antenna reliably receiving the hand-held (at 5W) you should be able to use it with a 5-10W rig to reach the remote hand-held.
 

In my last job cell phones were prohibited because virtually all cellphones were also cameras and audio recorders..  There was no prohibition on radios.

Thank you once again. I’ll do testing here with the radios for distance and repeater existence and visibility. I will post my findings. Much appreciated.