04-12-2013, 09:28 AM
Could the whole '96' series valves (DK96, DF96, DAF96, 7 DL96, IIRC), not be used in these radios. As these all have 25mA heaters, there would be no strain put on any of them. I've just looked in my 1970 & 1971/72 editions of the Mullard Data Books, but they don't show any equivalents for the 1U5 or 1U4, and don't mention the 1L6 at all. For the
3V4 they give the equivalent as a DL94, but I don't have the detailed data to hand. My feeling is that the '96 ' range could be substituted for the earlier '91' series, which IIRC, are pin-compatible, but I'm not sure about the '94' valves, or the U.S. 1.... series.
3V4 they give the equivalent as a DL94, but I don't have the detailed data to hand. My feeling is that the '96 ' range could be substituted for the earlier '91' series, which IIRC, are pin-compatible, but I'm not sure about the '94' valves, or the U.S. 1.... series.
