This is a solicitation for a firm-fixed price purchase order to be awarded on a sole source basis to TELEPHONICS CORP for the repair of five Signal Processor units. The work requires the contractor to obtain technical expertise, engineering data, and OEM parts from TELEPHONICS CORP. Quotations must have shipping terms of F.O.B. Destination or F.O.B. Origin, and a Certificate of Conformance must be furnished.