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

Thread Closed

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
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Try looking at this site the book mark is for a old generator that I was given. David    https://radionerds.com/index.ph...David — 08:36 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Hello Everyone, I am looking for voltage identification for all the pin positions on the socket of a CRV-20130 power su...Tonym4704 — 08:16 PM
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

[-]
Who's Online
There are currently 1751 online users. [Complete List]
» 1 Member(s) | 1750 Guest(s)
Avatar

>