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Philco 91-121 sensitivity
grandntl
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Posts: 19
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Joined: Jul 2017
City: West Chester, PA
#19

11-02-2017, 10:08 AM
Thank you Ron and Bob, that local/distance switch in the 15 schematic matches what I have. Checking the tube socket data for the 15 shows 30 volts on the 44RF cathode (only one listing). Going back to the 91-121, should all of them normally have 25 volts on the 44RF cathode unless they were a factory or "aftermarket" modification?
Bob
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Messages In This Thread
Philco 91-121 sensitivity - by grandntl - 10-05-2017, 03:41 PM
RE: Philco 91-121 sensitivity - by Ron Ramirez - 10-05-2017, 03:58 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-05-2017, 05:34 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-06-2017, 08:51 AM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-06-2017, 10:19 AM
RE: Philco 91-121 sensitivity - by grandntl - 10-06-2017, 12:49 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-06-2017, 01:22 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-06-2017, 02:28 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-06-2017, 03:26 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-06-2017, 05:59 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-06-2017, 07:39 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-27-2017, 03:32 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-28-2017, 08:41 AM
RE: Philco 91-121 sensitivity - by grandntl - 10-29-2017, 12:29 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-29-2017, 01:48 PM
RE: Philco 91-121 sensitivity - by grandntl - 11-01-2017, 10:29 AM
RE: Philco 91-121 sensitivity - by Ron Ramirez - 11-01-2017, 12:48 PM
RE: Philco 91-121 sensitivity - by klondike98 - 11-01-2017, 01:42 PM
RE: Philco 91-121 sensitivity - by grandntl - 11-02-2017, 10:08 AM
RE: Philco 91-121 sensitivity - by grandntl - 11-14-2017, 02:16 PM
RE: Philco 91-121 sensitivity - by klondike98 - 11-14-2017, 02:39 PM



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