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co-op: M900 (M 900); Defiant

Martin Renz Ernst Erb Vincent de Franco Martin Bösch Mark Hippenstiel Bernhard Nagel Dietmar Rudolph † 6.1.22 Otmar Jung Heribert Jung Eilert Menke 
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Forum » Radios and other type of sets (Physics) etc. » MODELS DISPLAYED » co-op: M900 (M 900); Defiant
Simon Vaughan
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14.Oct.09 10:06

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This is a Straight 4 valve receiver with energised loudspeaker

The Valve line-up for this set is

AC/VP1 Met (Mazda)
AC/S2 PEN Met (Mazda) or SP4B Met (mullard) alternative added from 20/09/35
AC/2 Pen Clear (Mazda)
UU4  Clear (Mullard)

Hope this information taken from a Co-Op service bulletin helps