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

48-482 alignment
#1

Probably the first of several alignment questions.  My 48-482 is finally recapped, back together and playing.  I'm reading the AM alignment info and step 1 is to connect the signal generator to through a 0.1 mf cap to the "stator of ant. section of tuning gang."  The stator being the fixed plates, I think the connection I need to make is either lug #1 or # 2 in the following photo but am not sure which one. Help? Thanks!!
[Image: https://www.dropbox.com/s/rojese3iq43nys....jpg?raw=1]

Schematic @ http://www.nostalgiaair.org/Resources/637/M0013637.htm
#2

Antenna section is #2, oscillator is #1

( edited to correct error)
#3

Thanks Mondial!
#4

Sorry klondike, but I gave you incorrect information. I was thinking of the FM sections of the tuning cap, where the ant section is closest to the front panel. I just checked my own 48-482 and the AM sections are reversed ( at least on mine).

So the osc section is closest to the front panel and the ant section is toward the back. #1 is osc and #2 is ant. I have edited my previous post to correct the error.

Sorry for any confusion!
#5

Thanks Mondial, no worries. Had not been back to work on it yet. Help me understand how you could tell which was which, I kept looking at the schematic but just could not sort it out.
#6

I checked it by tuning in a station at the high end of the band and then touching my finger to each terminal.

When you touch the osc section it will detune the station off frequency and your finger capacity may even tune it to the nearest lower freq station.

When you touch the ant section, the station stays tuned on freq but the signal and/or noise level will vary.

It is a bit odd that Philco reversed the order of the AM and FM sections of the tuning cap. Since the AM ant and osc sections are wired directly to the band switch, they could have just as easily kept AM and FM consistent. Usually in other radios they correspond in order.

Try it yourself and see of your set is wired the same as mine.
#7

Thanks for the lesson! I'll give it a try.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
The list of my radio & TV collection!
Yes, Michael. But strangely enough, I managed to keep the original veneer. I must admit that I don't really like it, so ...RadioSvit — 02:21 PM
The list of my radio & TV collection!
Good radio. I bet there was a lot of veneer fixing.morzh — 02:16 PM
Philco 46-480 Electronic Restoration
>> it is because I am retired and a little demented. You have just the right amount of it. No perfectly sane p...morzh — 02:14 PM
The list of my radio & TV collection!
Old Zenith 5S-29 tube radio. First turn-on after repair and reception quality testing. Demonstration of the operation of...RadioSvit — 01:27 PM
Philco 42-345 Restoration/Repair
Welcome to the Phorum, osanders0311!  Regardless how far you intend to restore this set, first priority should be replac...GarySP — 11:51 AM
Philco 46-480 Electronic Restoration
Joseph, it is because I am retired and a little demented. My problem is that I wanted to own a collection that spans th...MrFixr55 — 11:29 AM
Philco 46-480 Electronic Restoration
Wow, here I am with only two restored radios. I’ve got to boost those numbers! If you can’t run with the big dogs, you m...jrblasde — 10:04 AM
Philco 46-480 Electronic Restoration
Hello MrFixr55, That will for sure keep you out of trouble! Last Sunday was spent mostly doing yard work anyway the we...radiorich — 09:50 AM
Philco 46-480 Electronic Restoration
Throw in all the Audio equipment that has to be kept in a bedroom (my office)L. 8 portable self contained PA speakers, ...MrFixr55 — 07:40 AM
Philco 42-345 Restoration/Repair
Looking at the pic supplied by Rod B, you can duplicate the missing loop antenna. 10 gauge copper wire can be used to m...MrFixr55 — 01:20 AM

[-]
Who's Online
There are currently no members online.

>