The most common and most likely answer to this crossword clue is the 9 letter word TRANSMITS
I've seen this crossword clue in The Guardian
T
R
A
N
S
M
I
T
S
Buddy explains!
The straight part
We know that "Hands on" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hands on = transmits.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TRANSMITS mean?
TRANSMITS verb- To send or convey something from one person, place or thing to another.
- To spread or pass on something such as a disease or a signal.
- To impart, convey or hand down something by inheritance or heredity.
- To communicate news or information.
- To convey energy or force through a mechanism or medium.
- To send out a signal (as opposed to receive).