Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

1933 Cathedral Model 89B
#3

I agree, it's a great little performer. Nice looking cabinet!

But it can be an absolute bear to get working, especially if you have a 36 tube based oscillator. A bit of advice, stick close to the schematic in that area except for he 36 cathode resistor, change it to 8k6 or so.
You will likely have to rewind at least part of the oscillator coil as well, be careful and precise. I had to do mine four times before it worked well.

Good luck!
Will


Messages In This Thread
1933 Cathedral Model 89B - by Warren - 03-31-2014, 11:48 PM
RE: 1933 Cathedral Model 89B - by Steve Davis - 03-31-2014, 11:56 PM
RE: 1933 Cathedral Model 89B - by skyscraper - 04-01-2014, 12:35 AM
RE: 1933 Cathedral Model 89B - by PAradiogeek - 04-01-2014, 07:23 AM
RE: 1933 Cathedral Model 89B - by gregb - 04-01-2014, 05:52 PM
RE: 1933 Cathedral Model 89B - by Warren - 04-01-2014, 06:55 PM
RE: 1933 Cathedral Model 89B - by skyscraper - 04-01-2014, 07:04 PM
RE: 1933 Cathedral Model 89B - by Warren - 04-07-2014, 02:28 PM
RE: 1933 Cathedral Model 89B - by skyscraper - 04-07-2014, 02:32 PM
RE: 1933 Cathedral Model 89B - by Warren - 04-07-2014, 07:46 PM
RE: 1933 Cathedral Model 89B - by Ron Ramirez - 04-08-2014, 05:24 AM
RE: 1933 Cathedral Model 89B - by Warren - 04-08-2014, 02:45 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM

[-]
Who's Online
There are currently 2173 online users. [Complete List]
» 2 Member(s) | 2171 Guest(s)
AvatarAvatar

>