Part Number 87-399-RB2UA having (CAGE Code 56738) and FSC 5955 Oscillators Piezoelectric Crystals in stock with ready to ship. Get an instant quote for 87-399-RB2UA Oscillator Subassembly by Symmetricom Inc. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.