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Philco 70 restoration attempt - singing now.
#39

1. Listening to it more I realized that the distortion similar to 90 and 20 is still there, just less pronounced, but recognizeable.
I am not willing to mod the detector - the radio will loose quite a bit of sensitivity. I compared it to the 90 - right now it is lot more sensitive.

2. Alluvasudden when turning it on I did not hear the transformer buzz. Then after 10 minutes I heard a little. So I decided to experiment: plugged it into the Variac and set the volts to 110V. When the voltage remains under 115V there is no buzz. But as son as it reaches 117-118V I hear the buzz and at 120V it is quirte pronounced. Even though I do not think it should buzz at 120V all the more reason to install buck transformer.


Messages In This Thread
RE: Philco 70 restoration attempt. - by morzh - 01-24-2014, 09:53 PM
RE: Philco 70 restoration attempt. - by morzh - 01-24-2014, 11:00 PM
RE: Philco 70 restoration attempt. - by morzh - 01-24-2014, 11:59 PM
RE: Philco 70 restoration attempt. - by Jamesm - 01-25-2014, 10:57 AM
RE: Philco 70 restoration attempt. - by gregb - 01-25-2014, 02:50 PM
RE: Philco 70 restoration attempt. - by morzh - 01-25-2014, 06:28 PM
RE: Philco 70 restoration attempt. - by morzh - 01-25-2014, 08:13 PM
RE: Philco 70 restoration attempt. - by Mondial - 01-25-2014, 11:28 PM
RE: Philco 70 restoration attempt. - by gregb - 01-25-2014, 11:40 PM
RE: Philco 70 restoration attempt. - by morzh - 01-26-2014, 01:57 PM
RE: Philco 70 restoration attempt. - by Raleigh - 01-27-2014, 01:12 PM
RE: Philco 70 restoration attempt. - by morzh - 01-27-2014, 01:46 PM
RE: Philco 70 restoration attempt. - by morzh - 01-31-2014, 09:10 PM
RE: Philco 70 restoration attempt. - by morzh - 01-31-2014, 09:11 PM
RE: Philco 70 restoration attempt. - by TV MAN - 02-01-2014, 12:20 PM
RE: Philco 70 restoration attempt. - by morzh - 02-01-2014, 12:53 PM
RE: Philco 70 restoration attempt. - by morzh - 02-01-2014, 10:27 PM
RE: Philco 70 restoration attempt. - by morzh - 02-01-2014, 10:39 PM
RE: Philco 70 restoration attempt. - by morzh - 02-02-2014, 08:12 PM
RE: Philco 70 restoration attempt. - by morzh - 02-02-2014, 08:25 PM
RE: Philco 70 restoration attempt. - by morzh - 02-03-2014, 08:32 PM
RE: Philco 70 restoration attempt. - by morzh - 02-05-2014, 12:04 PM
RE: Philco 70 restoration attempt. - by morzh - 02-06-2014, 08:03 PM
RE: Philco 70 restoration attempt. - by morzh - 02-07-2014, 03:52 PM
RE: Philco 70 restoration attempt. - by murf - 02-08-2014, 02:15 PM
RE: Philco 70 restoration attempt. - by morzh - 02-08-2014, 02:41 PM
RE: Philco 70 restoration attempt. - by TV MAN - 02-08-2014, 02:41 PM
RE: Philco 70 restoration attempt. - by morzh - 02-08-2014, 02:49 PM
RE: Philco 70 restoration attempt. - by morzh - 02-10-2014, 09:37 PM
RE: Philco 70 restoration attempt. - by TV MAN - 02-11-2014, 11:16 AM
RE: Philco 70 restoration attempt. - by morzh - 02-11-2014, 11:27 AM
RE: Philco 70 restoration attempt. - by morzh - 02-13-2014, 08:48 PM
RE: Philco 70 restoration attempt - singing now. - by morzh - 02-19-2014, 10:51 PM



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