1.设计要点LY-221型通用录音机是以省、市、自治区广播电台以及广播站为对象而试制的。在设计过程中着重考虑了下列几点: (1) 考虑到省、市、自治区电台和广播站目前大量使用着L-601和L-602等单声道半轨的录音机和LY-635型落地式单声道全轨录音 1. Design Points LY-221 Universal Recorder is based on provinces, municipalities and autonomous regions, radio and radio stations for the trial and production of the object. In the process of design, the following points are mainly considered: (1) Taking into consideration that monorail half-track recorders such as the L-601 and L-602 and LY-635 type floor-standing recorders have been widely used in radio stations and radio stations in the provinces, Mono-track recording