The radio is programmable with software KPG-D3N.
There is an OPTION for front panel programming, but it is a licensed feature that lists for $125 per radio. The option is activated via software and cannot be done without it.
Highly unlikely it has that feature in it unless it was specifically requested when purchased. Pretty rare option for business use, and technically not allowed by the FCC except in very specific instances (although many hobbyists use it).
But, wait, there's more!!!!
KPG-D3NK software is $155.00 per user license. It is not something you can download bootleg version off the darker corners of the internet. It must be purchased from a Kenwood dealer. Activation of said software is only to individual computers for each individual license. IT requires KPT-300LMC authentication software for the software and any add on features.
It also requires KPG-46XM programming cable, list price $162.00.
But, don't break out your checkbook just yet.
It is possible that the radios have a read password, write password, or a read/write password in them. So having the programming software and cable does not guarantee that you'll be able to program them.
And, for added pleasure:
There are TWO version of the NX-3820:
NX-3820HGK -only- covers 450-520MHz.
NX-3820HGK2 -only- covers 400-470MHz.
So, you have to have the correct model to even think about programming 70cm amateur stuff.
And, the whip cream/cherry on top:
If this is a US market radio (either version) it will be locked to narrow band analog, so it's going to sound like crap on wide band hammy stuff. Wide band enablement is possible, but it takes some work.
So, if you have the right model, and you are willing to spend $317 (list price for the software/cable) and you want to go through the challenge of getting wideband enabled on a radio that isn't yours, AND you want to spin the wheel on the password protection on the radio, then you MIGHT be able to program 70cm frequencies in it.
So, 317 hard earned dollars, to be able to program the radio via laptop. Add another $125 if you want to do it from the front panel. And keep in mind that programming from the front panel is nothing at all like how an amateur radio works and gets annoying.
Or, take that $317(or $442 if you want front panel programming) and buy yourself a dual band amateur radio that you own and isn't bolted to a company truck, and you don't need a laptop to program it (if your boss will let you do that…).
But, hey, whatever floats your boat…..