Perhaps others have an opinion but your questions are good ones and should be asked.
I've been doing this stuff for a long long time and I come here to learn as well.
Consider it a huge knowledge bank.
As far as your friend goes, perhaps you can respectfully educate him.
The amp you ask about was built specifically for the CB community.
Since amplifiers on CB are more than highly illegal, the Palamar Corp just added some extra Ham bands to this unit and declared it a "Ham Radio" or Amateur Radio amp.
The FCC countered with requiring all manufactured amps to eliminate the 10 meter band and in essence also eliminate the ability for CB operators to operate 11 meters with them even though it was legal for Hams to use them in their part of the band (10 meters).
Kinda' confusing, eh?
This would be legal to use in the Ham band but these Sweep tube type amps have a nasty tendency to splatter and distort. They are far from "linear". LOL.
If your friend uses it at all and doesn't have a Ham license, he could be in for trouble.
Instead, you might direct him to check into getting a license. Perhaps you might enjoy this too.
The FCC has streamlined the licensing process and it is easier than ever. No Code requirements anymore.
All the the test questions and their answers along with test testing can be found on the following site:http://www.qrz.com
I like to make a point of inviting CB operators to check into this because we can use lot's more Hams. More licenses mean we get to keep the frequencies we have and it doesn't mean your friend still can't enjoy his favorite CB channel.
My bet is that he would enjoy having millions of "channels" and be able to legally use up to 1500 watts PEP output.
Oh, Ham Radio works really well in the middle of the night. Night time operation on CB for long distances is difficult to impossible even with lot's of Power.
Hams also have thousands of repeater (mobile relay) stations across the World, many connected by internet VoiP and more than two dozen operational Satellites in orbit.
It's still a great fraternity and well worth checking out.
Consider joining us, you'd be welcome.