Tender For invitation of bids for supply of spares for sonar ushus-2 system - front end dc-dc power supply module, pcb assy sbc 8640 vpx, pcb assy single tms, pcb assy dac is-b3, pcb assy tms 6678, pcb assy eth dic b1, pcb assy eth dic b2, pcb assy graphic module, oas transducer element