Philco 91-121 sensitivity

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed

Thread Rating:

0 Vote(s) - 0 Average
1
2
3
4
5

Linear Mode

Philco 91-121 sensitivity

grandntl
Junior Member

Posts: 19
Threads: 3
Joined: Jul 2017
City: West Chester, PA

10-06-2017, 12:49 PM

Terry, I relied on the chassis gnd for my numbers, just tried the cap neg for comparison; my antenna was always connected and I checked the 3 tuning cap trimmers again (yep WDAS 1480). With the shield off, touching the 44 RF amp tube cap results in a slight reduction in reception, touching the 36 detector/oscillator cap results in a noticeable increase and touching the 44 IF cap eliminates the signal. Is all this as it should be? For now I will leave the tube shield off and enjoy the good sound, but something still needs fixing (or not)!
Bob

Find

« Next Oldest | Next Newest »

Thread Closed

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

View a Printable Version

Users browsing this thread:

Recent Posts
Rogers Majestic R-646
Kinda weird to see both open Nothing weird if you remember that this radio is about 100 years old :)Vlad95 — 07:49 PM
Philco 42-345 Restoration/Repair
I believe I'm making progress, resistors have been rechecked and corrected, removed that ugly blue capacitor and more wi...osanders0311 — 07:38 PM
Philco Model 16 wiring question
Thanks Morzh Yes I recapped everything and replaced almost all the resistors as well. I redid #99 with .015 safety ca...bobclausen — 07:11 PM
Philco Model 16 wiring question
Well...pull out every single load of the transformer. For every winding. Unsolder if needed. Then re-do your dim bulb....morzh — 07:02 PM
Rogers Majestic R-646
Kinda weird to see both open, but once you get it up and running, really pay attention to your sound. Listen for loud cr...TV MAN — 06:59 PM
Rogers Majestic R-646
Vlad; I was just reminded of something else, I'm not sure why but many Rogers built sets do seem to have open primari...Arran — 04:40 PM
Rogers Majestic R-646
Thanks RpdB I don't think there's much difference with interstage transformers of different models other than dimersion...Vlad95 — 03:27 PM
Rogers Majestic R-646
Vlad; I looks like your set has the same problem that mine did, both a bad output transformer, and a bad audio inters...Arran — 03:21 PM
Rogers Majestic R-646
Ouch! Not often the secondary takes a hit. Wish there was a better solution. I have a good interstage transformer but it...RodB — 02:59 PM
Rogers Majestic R-646
By the way, the bypass you suggested is a rare solution in some circuits. For example, this schematics solution is used...Vlad95 — 01:43 PM

Who's Online

There are currently 1119 online users. [Complete List]
» 1 Member(s) | 1118 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me