FIELD: portable radiophones. SUBSTANCE: radiophone has sliding acoustic- channel member for sound transmission through acoustic member to telephone transmitter disposed in main case of radiophone. Acoustic member moves by sliding to its drawn-out position for using it so that acoustic-channel sound input is aimed at receiving sound when user is speaking on radiophone. Sound passes over acoustic channel and arrives at transmitter directly through sound output. Multiplexing member disposed around transmitter acoustically seals sound output with respect to sound port of transmitter, Means are provided on sliding member and on main body for guiding this member when it is sliding to drawn-in and drawn-out position. Locking facilities provide for holding acoustic member in its two positions, One alternative of radiophone has its sliding member closing face panel of radiophone when in drawn-in position. In other alternative acoustic member is disposed near transmitter in drawn-in position for using radiophone without drawing out the acoustic member. EFFECT: enhanced reliability, economic efficiency, and acoustic characteristics. 12 cl, 13 dwg
