The most common and most likely answer to this crossword clue is the 10 letter word SHORT-WAVE
I've seen this crossword clue in Independent
S
H
O
R
T
-
W
A
V
E
Buddy explains!
The straight part
We know that "Such" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case such = short-wave.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 SHORT-WAVE mean?
SHORT-WAVE adjective- (of radio waves) Having a wavelength of approximately 10 to 100 meters
- (of radio equipment) Capable of transmitting or receiving signals at such a wavelength.