A portable radio communication apparatus is provided with a boom portion
having both ends connected with a housing of the portable radio
communication apparatus and having a central portion located between both
ends. In the portable radio communication apparatus, at least one through
hole is formed between the boom portion and the housing. The boom portion
includes a central portion and two end portions. The central portion
extends in parallel to a width direction of the portable radio
communication apparatus, and the two end portions are bent respectively
from both ends of the central portion.