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

Aligning the 40-190
#1

Hi Philconians,

I am wanting to align my beautiful Philco 40-190. It plays and I have a good signal generator (probably 1970s model). My problem is determining where to hook up the signal output. I have the schematic and Riders alignment instructions but they are unclear. Adjusting the I.F.s went fine and the instructions say hook to No. 1 on Loop Panel. (I used a .1 capacitor.) That worked great.

From there on it simply says for Output Connections: Use Loop on Generator. I read the part about making a wire loop in the generator output lead, but it doesn't say where to attach it for the next five adjustments, including SW. Anybody have a handle on correct placement of the lead?

Your advice will be appreciated. Thanks.
#2

Some info here:

http://www.nostalgiaair.org/PagesByModel...013339.pdf

My dummy coil is around 40 turns of magnet wire from discarded transformer wound on a paper towel cardboard .

You might also want to invest in an inexpensive modern digital frequency meter to check the accuracy of your vintage signal generator after letting it settle in for a half hour. Turn the modultion off while doing the check.
#3

I located the answer. All is well. Thanks.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Since you stated earlier, you have a console 38-7XX.  They also had a 38-7T (table), and 38-7CS (chairside).  A very nic...GarySP — 01:18 PM
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM

[-]
Who's Online
There are currently 1133 online users. [Complete List]
» 2 Member(s) | 1131 Guest(s)
AvatarAvatar

>