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Philco 90 with Twin 47 Tubes in PP
05-07-2014, 10:48 PM
As long as the primary has continuity now difference of 3 ohms DC resistance should not effect the inductance enough that you can't adjust the IF to 260 kc. In fact they may have been mismatched to begin with, either through accepted margins of error or because they wanted a step up between the primary and the secondary windings. I would try re-using the original IF coil if you can, and save the new one as a spare.
Regards Arran
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Messages In This Thread
Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 11:00 AM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 02:39 PM
RE: Philco 90 with Twin 47 Tubes in PP - by TA Forbes - 05-05-2014, 02:39 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 03:02 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Ron Ramirez - 05-05-2014, 03:46 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Ron Ramirez - 05-05-2014, 03:51 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 03:55 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Ron Ramirez - 05-05-2014, 04:01 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 04:17 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-05-2014, 05:23 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 05:42 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-05-2014, 06:05 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 06:30 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 06:45 PM
RE: Philco 90 with Twin 47 Tubes in PP - by gregb - 05-05-2014, 08:45 PM
RE: Philco 90 with Twin 47 Tubes in PP - by gregb - 05-05-2014, 08:49 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 09:37 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-06-2014, 03:24 AM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-07-2014, 10:12 AM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-07-2014, 01:21 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-07-2014, 10:48 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-13-2014, 01:53 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-14-2014, 09:57 AM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-14-2014, 10:15 AM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-14-2014, 12:23 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-14-2014, 01:11 PM
RE: Philco 90 with Twin 47 Tubes in PP - by gregb - 05-14-2014, 03:22 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-15-2014, 12:18 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-15-2014, 12:26 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-15-2014, 12:33 PM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-15-2014, 04:07 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Warren - 05-15-2014, 06:46 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-16-2014, 12:09 AM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-16-2014, 05:28 AM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-17-2014, 01:40 AM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-20-2014, 06:40 AM
RE: Philco 90 with Twin 47 Tubes in PP - by TA Forbes - 05-20-2014, 08:42 AM
RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-28-2014, 05:38 AM
RE: Philco 90 with Twin 47 Tubes in PP - by TA Forbes - 05-28-2014, 09:29 AM
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