2 x Raytheon’66 JRP-5886 (DF703) subminiature tubes NIB

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2 x Raytheon’1966 JRP-5886 (DF703) subminiature audio/electrometer tubes, NIB You are buying a pair of high quality military qualified type JRP-5886 vintage tubes - reliable subminiature electrometer pentode , never used, made in USA in 1966 by Raytheon. The tubes have yellow printing “RAYTHEON JRP5886 made in U.S.A. ”, same batch No.184 and same data code 66-17. T he Raytheon EIA manufacturer code 280 is also printed. The 5886 is a low-noise hearing aid/electrometer subminiature penthode - 0.25pA max grid current. The European equivalent for a 5886 is the DF703 . The 5886 is excellent to the hobby builder: - the filament power is very low, 1.25 volts at 10 milliamps ! - the typical operating plate voltage is only 8.5 vols ! The tubes are packed in white military grade packing and extra heavy boxes, marked “JAN-CRP-5886”, also marked with Federal stock number 5. Warranty: Unfortunately they are not tested (measured) because our tube testers can not measure such type of tubes. But to ensure our customers we guarantee money back 30 day warranty in case tubes do not poses satisfactory parameters! PAYMENT We accept the following payment methods: PayPal - SHIPMENT All item(s) will be shipped by registered priority airmail or EMS , DPD or other traceable courier if the buyer prefers to get items faster or if the item(s) worth read more