To answer your question, Can a Kenwood Radio be used to Communicate with a Motorola Radio? (that is,...

1. Can a Kenwood Radio be used to Communicate with a
Motorola Radio?
To answer your question, Can a Kenwood Radio be used to Communicate with a Motorola Radio?
(that is, after all, why I'm here): It depends entirely on which models you are planning to use. For
example, if you had two PMR446 variants that were both on the same band, they ought to work fine
(even if one was Kenwood and the other was Motorola).
If two radios are the same basic type and set to the same channel, then I don't personally see why
they wouldn't work. However, if they aren't of the same type, then they probably won't work, it's that
simple.
Two-way radio technology is both simpler than you'd think it would be and more complicated than it
first appears (if that makes sense), so its always best to make sure you have access to good kit that
is easy to use. Personally, (if it is at all possible for you) I'd suggest spending out a bit and getting a
new set, I'll explain why below…
Your question does incur a dangerous element, so I feel I'd better warn you. Make sure that you
understand, beyond a shadow of a doubt, that your license covers the frequency you are using. For
most of the frequencies you'd likely to be using in order to connect the two devices, a special license
is required. Transmitting without a license is a serious crime and you could spend up to two years in
prison.
As Robert J from Yahoo! Answers. suggests, the reason it's considered to be so serious an offence is
because you can actually endanger lives by interrupting radio transmissions from ambulances or
police cars. I hate to sound like a square here, but in this instance, the rules exist for a reason.
Anyway, you really need to do your homework on this one and it may actually turn out to be easier
and cheaper for you to just buy a new set of radios from either Kenwood or Motorola. If you were
running a business, I'd go as far as to actually recommend you take this step.
However, if you're only using the radios for personal projects, then provided you check them out and
stick to the rules, you shouldn't have a problem.