I am the owner of a pair of PHILIPS (=AMPEREX) YD 1130 with graphite anodes
made in France. According to an old PHILIPS tube manual they should be
equivalent electrically to the 3-400Z ( max 3000 volts ) and the same size
as the EIMAC tube. But my tubes have the same size as the 3-500Z????? Can
anyone give an explanation? Can they be run up to 4000 volts? Are they =
the 3-500ZG? I remember the EIMAC tubes in my SB 220 I built around 1968-69
had graphite anodes and I also remember EIMAC had graphite anodes in their
3-500Z ads in those years. Did EIMAC manufacture the tubes themselves or did
they buy them from PHILIPS / AMPEREX?
Anyone? / 73s de Hans SM5KI
sm5ki@algonet.se
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>Från: Phil Levin W2GE <w2ge@home.com>
>Till: "amps@contesting.com" <amps@contesting.com>
>Ämne: [AMPS] Pictures of these tubes
>Datum: tis 30 nov 1999 19.00
>
>
>
>Pictures of most of these russian tubes with home-brew coaxial sockets
>are available at:
>
>
>http://www.sp.dianet.or.jp/~ja8fdt/tube/
>
>
>Thanks again, Phil W2GE
>
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