bids are invited for spares of pa system -1.complete wall mounted handsets station for public address system 2.offered system should seamlessly fit/compatible with our existing system of model: lbd-8921/02 <(>&<)> make:bosch/philips with all functionalities and features. 3.he supplied material should be compatible with our existing system then only material shall be accepted. , main pcb with pre-amplifier for existing pa system of make: philips/bosch <(>&<)> model: lbd-8921/02. the pcb should assemble as below. 1.pcb assy.main pcb part no.-3915 101 54680 2.pcb assy.power amplifire part no.-3915 101 54710 3.pcb assy.switch pcb part no.-3915 101 39530 4.pcb assy.potmeter part no.-3915 101 35950 5.the supplied material should be compatible with our existing system 1.page receiving transformer (3915 10139670), also known as page receiver (audio isolation transformer) 2.transformer in resistance value: 800 ohms to 1000 ohm 3.transformer out resistance value: 1200 ohm to 1500 ohm 4.transformer height: 13 mm-15 mm, transformer width: 15 mm 5.the above item should be compatible with existing wall mounted pa station of make: bosh/philips and model: lbd 8921/02. 6.the supplied material should be compatible with our existing system. 1. bdw 93c transistor, i/code no.82614172180 compatible with existing system of model: lbd 8921/02 <(>&<)> make: philips/bosch. 1.bdw 94c transistor, i/code no. 82614179130 compatible with existing system of model: lbd 8921/02 <(>&<)> make: philips/bosch 1.a plastic body cradle switch assembly (this is where on which the hand set is kept) with reed relay coil. 2.the hand set rest is required for existing pa system of model: lbd 8921/02 <(>&<)> make: bosch/philips. 3.the supplied material should be compatible with our existing system. 1.the desktop handset station, compatible with existing model : lbd 8904/00 consisting of fiber glass housing with a handset. 2.this single electronic module should provide the necessary preamplification and signal processing. 3.it should operate as complete handset station with all the functions of a standard industrial public address system when used with extension amplifier of existing model lbd 8924. 4.any product shall be acceptable if the supplied product is compatible with existing system of model: lbd 8904 <(>&<)> make: philips/bosch . 1.public addressing system jb ( compatible with existing model: lbd 8930/00 <(>&<)> make :philips/bosch) 2.jb should be of industrial grade lm6 material (should be weather proof, should endure industrial outdoor climatic conditions and c austic). 3.should have built-in connectors for signal cable <(>&<)> mains cable along with the fcs. 4.provision of multilayer pcb with ul approved connectors for field connections like pvt, page <(>&<)> fs signal should be given. 5.product will be acceptable if the said product is found compatible with exisiting system total quantity : 550