Chris129

If you do go ahead and take the radio you can find the documentation at the link below.
 
http://manuals.repeater-builder.com/Kenwood/kenwood.html
 
You'll have to scroll down a ways to find it. Look for file names like this for example:
 
nx/NX-820/NX-820H(G) Revised_B53-7033-10.pdf
 
I believe the programming software you need is KPG-141D. You would like to get the most recent version.
 
Download a copy here:
 
http://leon880314.com/software-de-programacion-para-radio-kenwood-kpg-141d/
 
https://hamfiles.co.uk/index.php?page=downloads&type=entry&id=radio-programming%2Fkpg-141-d-prpgramming_2
 
Or you can buy it from a place like this:
 
https://www.ameradio.com/product/100727/description.html

Pretty badass radio... its a Part 90 radio. Just keep it and use it for GMRS. It will serve you well... certainly a great starter radio over the CCR garbage.
 
G.

Some of the old Kenwood radios are Part 95 certified. I have the TK-370G-1, TK-3170-K and the TK-3140. All 128 channel UHF radios. While the official lower frequency range is 450MHz on the ones useful for GMRS I’ve used them down to 440MHz or so making them usable on the simplex and repeater section of the Ham 70cm band if that’s of any interest.

Ok, pulled two UHF ID's, Both have a GC of K44, The first is 431200 and the second is 431201. Both have certification for part 22, 74, and 90. While it is not part 95E certified, as long as you do not run digital or encryption and you keep the power levels within legal limits you should be fine to use this radio.

Some of the Kenwood NX series radios will do both analog and digital. The digital part is NXDN, mostly used by railroads with smaller number used by businesses. A few areas in the US see some use of NXDN on the Ham bands. Note that any type of digital voice on GMRS is prohibited by the FCC so only the analog part is of any use.
 
I picked up a Kenwood NX-340U, analog/NXDN, real cheap off of eBay but haven’t done much with it yet.
 
Also got a Kenwood TK-D340 as well that does analog/DMR.

Welcome to the forum and asking a great question... as a fellow newbie back in Nov 2020... I took the Part 95 certified radios to make my $80 purchase handheld from CCP as a starter radio and has been great...  
 
One thing I learned is my handheld is 25MHz bandwidth and sound is great... I'm not the tech guy.   I can not remember if it was Kenwood or maybe Midland did half the bandwidth...  Someone will help me remember...
Jack