上海无线电四厂最近试制成“宝石牌”4B2型三管手提式半导体收音机。全机体积比饭盒略宽一些;全重1.6公斤;机壳用彩色塑料压制,配上“宝石”指示商标和镏金刻度盘;机壳上装手提环,携带方便。这种半导体收音机用电较省,仅用四节二号电池,如每天开二、三小时,可用两月左右。它的发香响亮,在三十平 Shanghai Radio Factory recently trial production of a ”GEM“ 4B2 three-tube portable semiconductor radios. The whole machine is slightly wider than the lunch box; full weight 1.6 kg; chassis color plastic suppression, coupled with ”gem" indicative trademark and gold dial; chassis upload portable ring, easy to carry. This semiconductor radio is more economical, with only four AA batteries, such as daily open two or three hours, available two months or so. It’s fragrant hair, at thirty levels