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Philco Model 16B Cathedral
Chris h
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Posts: 79
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Joined: Dec 2014
City: Wood River, Il.
#41

08-08-2017, 01:21 PM
When going thru the tubes, I found that someone replaced the #76 local oscillator with a #37. I should have caught this on the first pass, but didn't.  It looks like the 76 is better suited for the LO, but I am just wondering if there may have been a reason for making the swap, other than someone didn't have a 76 available at the time. According to my tube manual they are both medium mu triodes. The 76 has a little higher amplification factor. I don't have a 76 lying around to try it in circuit, but have one on order.  The radio plays well on the BC band, but haven't tried on the short wave bands yet. (No decent SW antenna in the shop). Will the 76 provide a little stronger oscillator on higher frequencies?
Chris H
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Messages In This Thread
Philco Model 16B Cathedral - by Chris h - 07-04-2017, 01:08 PM
RE: Philco Model 16B Cathedral - by morzh - 07-04-2017, 04:30 PM
RE: Philco Model 16B Cathedral - by Chris h - 07-05-2017, 01:10 PM
RE: Philco Model 16B Cathedral - by Chris h - 07-14-2017, 08:20 AM
RE: Philco Model 16B Cathedral - by morzh - 07-14-2017, 08:45 AM
RE: Philco Model 16B Cathedral - by Chris h - 07-14-2017, 05:14 PM
RE: Philco Model 16B Cathedral - by Stall-U-Rated - 07-17-2017, 11:29 PM
RE: Philco Model 16B Cathedral - by Chris h - 07-18-2017, 08:25 AM
RE: Philco Model 16B Cathedral - by morzh - 07-18-2017, 08:53 AM
RE: Philco Model 16B Cathedral - by Stall-U-Rated - 07-18-2017, 05:08 PM
RE: Philco Model 16B Cathedral - by morzh - 07-18-2017, 05:34 PM
RE: Philco Model 16B Cathedral - by Stall-U-Rated - 07-18-2017, 07:22 PM
RE: Philco Model 16B Cathedral - by Chris h - 07-21-2017, 08:36 AM
RE: Philco Model 16B Cathedral - by morzh - 07-21-2017, 09:06 AM
RE: Philco Model 16B Cathedral - by Stall-U-Rated - 07-21-2017, 04:52 PM
RE: Philco Model 16B Cathedral - by Chris h - 07-24-2017, 01:06 PM
RE: Philco Model 16B Cathedral - by morzh - 07-24-2017, 01:11 PM
RE: Philco Model 16B Cathedral - by Chris h - 07-24-2017, 10:37 PM
RE: Philco Model 16B Cathedral - by Stall-U-Rated - 07-25-2017, 01:05 AM
RE: Philco Model 16B Cathedral - by klondike98 - 07-25-2017, 08:11 AM
RE: Philco Model 16B Cathedral - by Stall-U-Rated - 07-25-2017, 07:15 PM
RE: Philco Model 16B Cathedral - by Chris h - 07-26-2017, 08:10 AM
RE: Philco Model 16B Cathedral - by morzh - 07-26-2017, 10:32 AM
RE: Philco Model 16B Cathedral - by Chris h - 07-27-2017, 01:33 PM
RE: Philco Model 16B Cathedral - by Ron Ramirez - 07-29-2017, 07:26 AM
RE: Philco Model 16B Cathedral - by Chris h - 08-01-2017, 01:28 PM
RE: Philco Model 16B Cathedral - by morzh - 08-01-2017, 04:34 PM
RE: Philco Model 16B Cathedral - by morzh - 08-01-2017, 08:33 PM
RE: Philco Model 16B Cathedral - by Chris h - 08-02-2017, 08:08 AM
RE: Philco Model 16B Cathedral - by Sean - 08-02-2017, 08:54 AM
RE: Philco Model 16B Cathedral - by Chris h - 08-02-2017, 01:08 PM
RE: Philco Model 16B Cathedral - by Chris h - 08-03-2017, 01:38 PM
RE: Philco Model 16B Cathedral - by Chris h - 08-04-2017, 10:27 PM
RE: Philco Model 16B Cathedral - by Chris h - 08-08-2017, 01:21 PM
RE: Philco Model 16B Cathedral - by Radioroslyn - 08-08-2017, 01:28 PM
RE: Philco Model 16B Cathedral - by Chris h - 08-08-2017, 10:18 PM
RE: Philco Model 16B Cathedral - by Chris h - 08-25-2017, 01:30 PM
RE: Philco Model 16B Cathedral - by 462ron - 08-25-2017, 01:50 PM
RE: Philco Model 16B Cathedral - by Chris h - 08-26-2017, 08:57 PM



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