Hi<P> You might try asking on Paul Stenning's forum in England.<P> <A HREF="http://www.vintage-radio.com/cgi-bin/yabb/YaBB.pl" TARGET=_blank>http://www.vintage-radio.com/cgi-bin/yabb/YaBB.pl</A> <P> Right now it's down but will be up soon.<P> Here is some information on the tube:<P> <A HREF="http://www.duncanamps.co.uk/cgi-bin/tdsl3.exe/show?SID=0002E3C224DAD37B&DES=EAF42" TARGET=_blank>http://www.duncanamps.co.uk/cgi-bin/tdsl3.exe/show?SID=0002E3C224DAD37B&DES=EAF42</A> <P> EAF42 is listed as 6CT7 but not used here in the US.<P>------------------<BR>Norm

The EAF42 may work as an IF amp, but for a combination 2nd det/audio amp you would need a tube with a diode section in it.<P>Don't know the European version, but such a tube with a diode and pentode section is the 6SF7<P>------------------<BR>Ken

The EAF 42 has a diode - <BR>E: 6.3V filament<BR>A: single diode<BR>F: pentode<BR>4: weird 8 pin base <IMG SRC="http://antiqueradios.com/forums/smile.gif"><P>does seem strange that a variable mu pentode would be used here - but didn't the later Philco 70s do that too? Probably no more distortion than a 6SQ7 with grid leak bias...<P>------------------<BR>

Hi<P>The tube line up ECH42, 2 x EAF42, AL41, AZ41 was used, so that wouldn't be the problem. <BR>Your radio can be made by Geloso, Italy - this was a big radio manufacturer. All Geloso model numbers i know start with the letter "G" followed by a number. Do you something like that on chassis or the dial scale? Are the paper caps also made by Geloso?<BR>If you need a typical schematic with that tube line up, just let me know.<P>Kind regards, Walter Haring, Switzerland <P>------------------<BR>

Hi Bill<P>Strange radio.... What you say about the markings (OC, PO, GO) leads to the conclusion, that this radio was made for the french speaking market (France, Belgium ...)<P>For the schematic, just give me your mail-adress.<P>Kind regards, Walter Haring<P>------------------<BR>