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

48-1270 alignment
#1

I've recently recapped a 48-1270. Its working pretty well but I want to fine tune it to improve reception - I'm a little distant from good stations. The Philco service manual has pretty good instructions for alignment of the 48-1270, but I need a little more elaboration on the first alignment step for AM. The manual instructions for attaching the signal generator for step one reads as follows "Through a .1-mf condenser to aerial section of tuning gang." I am familiar with the stator section of the tuning gang, but I am having difficulty determining which part is the aerial section. I've tried to determine through schematic but can't be sure. So, I've tried this: There are two lugs on top of the condenser - one over each tuning section. When I touch the lug farthest from tuning cord with my finger the signal for a strong AM station gets considerably stronger. When I touch the lug closest to the tuning cord the signal disappears. Does this help discriminate between aerial and oscillator sections. I am guessing the first lug (farthest from tuning cord) is the aerial section. I sure would appreciate some help on this - don't want to mess this up really bad. Thanks.


Messages In This Thread
48-1270 alignment - by Bigreddog42 - 07-05-2021, 09:28 PM
RE: 48-1270 alignment - by morzh - 07-05-2021, 10:02 PM
RE: 48-1270 alignment - by Bigreddog42 - 07-06-2021, 11:41 AM
RE: 48-1270 alignment - by Bigreddog42 - 07-06-2021, 11:40 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Model 70 Cabinet Trim
musar , Well if you have any more questions feel free to post away . Sincerely Richardradiorich — 08:56 PM
Model 70 Cabinet Trim
Although I have not made any cabinets or cabinet parts for a couple of years, I still have some parts left over, includi...Steve Davis — 06:26 PM
philcorepairbench.com - shadow-meter
Thanks Ron.fenbach — 02:43 PM
Model 70 Cabinet Trim
Thank you, Gary. Before making my original post, I had clicked on "Steve Davis Cabinets" only to find that it...musar — 02:25 PM
philco predicta
Welcome to the Phorum, cgl18! I am not your resource for television repair, but lots of friendly help is available here...GarySP — 02:12 PM
Model 70 Cabinet Trim
Welcome to the Phorum, musar! You can send Steve Davis a private message (PM). The site is at the top of the Home page...GarySP — 02:09 PM
Model 70 Cabinet Trim
How do I contact him? The only contact information for him I could find when searching online was a telephone number th...musar — 10:38 AM
philco predicta
Hello, good afternoon, I would like to ask what the possible problem could be if I don't have an image on the screen. I ...cgl18 — 10:19 AM
Philco model 38 code 121 not receiving signal.
So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original o...Stormlord5500 — 09:31 AM
462ron
It’s on the bottom of the homepage of our Philcoradio.com homepage! Ron462ron — 07:20 AM

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

>