Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Still Not Tracking Right
#4

Brenda is talking about the IF transformers.

You did OK, except for A3. Philco wanted you to tighten A3 (this is what they meant by completely clockwise), adjust A1 and A2 for maximum output, then adjust A3 for maximum output, and finally adjust A4 for maximum output.

Try it again, it should get better.

One final thought. When you're finished, your 620 kc station may not come in exactly at 620 on the dial no matter how carefully you perform the alignment. Non-linearity in the circuit, especially as these components age, may cause this. Not to mention the fact that Philco did not provide an adjustment for the low end of the band in this set.

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
Still Not Tracking Right - by Elijah - 01-08-2013, 07:50 PM
RE: Still Not Tracking Right - by BrendaAnnD - 01-08-2013, 10:50 PM
RE: Still Not Tracking Right - by Elijah - 01-09-2013, 04:01 PM
RE: Still Not Tracking Right - by Ron Ramirez - 01-09-2013, 06:28 PM
RE: Still Not Tracking Right - by Elijah - 01-09-2013, 08:22 PM
RE: Still Not Tracking Right - by dixierat - 01-09-2013, 08:58 PM
RE: Still Not Tracking Right - by Elijah - 01-09-2013, 10:26 PM
RE: Still Not Tracking Right - by TA Forbes - 01-09-2013, 10:34 PM
RE: Still Not Tracking Right - by dixierat - 01-10-2013, 09:59 AM
RE: Still Not Tracking Right - by Ron Ramirez - 01-10-2013, 10:21 AM
RE: Still Not Tracking Right - by BrendaAnnD - 01-10-2013, 08:55 PM
RE: Still Not Tracking Right - by TA Forbes - 01-10-2013, 10:50 PM
RE: Still Not Tracking Right - by Elijah - 01-11-2013, 10:37 AM
RE: Still Not Tracking Right - by TA Forbes - 01-11-2013, 01:38 PM
RE: Still Not Tracking Right - by Ron Ramirez - 01-11-2013, 01:43 PM
RE: Still Not Tracking Right - by codefox1 - 01-12-2013, 02:59 PM
RE: Still Not Tracking Right - by Elijah - 01-12-2013, 07:03 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM
40-150 General questions
Good thing you're a good electrician ... the pictures show a lot of rewiring in your future! Take care and BE HEALTHY!...GarySP — 11:52 AM
40-150 General questions
I think RobB has it right. It is a part number and looks like its stamped on the chassis and that wasn't something you ...klondike98 — 11:41 AM
40-150 General questions
It's most likely a part number. Most of Philco part numbers are in that format. I looked at the parts list for this mode...RodB — 08:10 AM
40-150 General questions
Hi Kevin, No, I don't but I like your Quote about being a good electrician. The way I look at it is "The fact ...MrFixr55 — 08:06 AM
Philco 38-7 Speaker
7K should be fine. While not a perfect match (This transformer is meant for 6V6 tubes), Antique Electronic Supply (AES)...MrFixr55 — 08:03 AM
40-150 General questions
I discovered a stamp on the underside of the breadboard on my Philco 40-150. It is"56-1417' in black ink with numbe...Kevin_D — 07:14 AM
Philco 38-7 Speaker
FYI the Impedance of the HR20 (the one I have) secondary of the audio transformer is 5 ohms. The 38-7XX speaker is suppo...tludka — 04:22 PM
Philco 38-7 Speaker
Yeah, don't use the transformer currently on the H-20 (Dopf, I thought "H20, is that new technology, a speaker usin...MrFixr55 — 03:51 PM

[-]
Who's Online
There are currently 2450 online users. [Complete List]
» 1 Member(s) | 2449 Guest(s)
Avatar

>