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Philco 89B won't oscillate!
Radioroslyn
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Posts: 7,288
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City: Roslyn Pa
#41

07-11-2016, 09:28 PM
It's a secret!!!  Adjust trimmers in fig 3 for 260kc (IF) Apply signal to cap of 36 tube.
Adjust trimmers in fig 4 as noted. Low frequency is 600kc apply signal to ant post LF and HF are the oscillator adjustments.
If you use a 1/4" nutdriver put tape around it to insulate it as some trimmers have HV on them. Peak all for max signal w/generator set for low level output w/modulation.
http://www.nostalgiaair.org/pagesbymodel...013876.pdf
GL
Terry
(This post was last modified: 07-11-2016, 09:37 PM by Radioroslyn.)
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Messages In This Thread
Philco 89B won't oscillate! - by Steve McDonald - 04-13-2016, 02:00 PM
RE: Philco 89B won't oscillate! - by morzh - 04-13-2016, 05:03 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 04-13-2016, 06:31 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 04-13-2016, 07:34 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 04-13-2016, 08:48 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 04-13-2016, 09:00 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 04-13-2016, 10:34 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 04-13-2016, 11:43 PM
RE: Philco 89B won't oscillate! - by morzh - 04-14-2016, 03:13 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 04-14-2016, 08:10 PM
RE: Philco 89B won't oscillate! - by KCMike - 04-14-2016, 10:30 PM
RE: Philco 89B won't oscillate! - by klondike98 - 05-02-2016, 06:38 PM
RE: Philco 89B won't oscillate! - by klondike98 - 05-06-2016, 03:24 PM
RE: Philco 89B won't oscillate! - by klondike98 - 05-06-2016, 05:53 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 05-09-2016, 07:51 PM
RE: Philco 89B won't oscillate! - by KCMike - 05-10-2016, 02:13 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 05-10-2016, 02:34 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 07-11-2016, 07:57 AM
RE: Philco 89B won't oscillate! - by Radioroslyn - 07-11-2016, 07:09 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 07-11-2016, 09:28 PM
RE: Philco 89B won't oscillate! - by Radioroslyn - 07-12-2016, 08:18 AM
89B DOES Oscillate!! - by Steve McDonald - 05-02-2016, 05:03 PM
89B DOES Oscillate!! - by Steve McDonald - 05-06-2016, 03:09 PM



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