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

Philco 40-180 Compensator Alignment
#23

Hi Gdolf,

I've been casually following the thread and it seems like you are slightly confused about the alignment. When you tuned the IF to 455 KHz the IF is aligned for both the SW and Broadcast bands. Now you can send rf signals to the radio and make adjustments to align the dial to the correct signal frequency and maximize the signal reception.

If what you indicated about the SW band is true, your radio is working fine except no Broadcast Band signals are getting through. Both bands are using the same circuits from the 1232 to the speaker so the problem would be with the Range/Band switch or the associated coils/transformers. To change bands the switch disconnects one set of coils and connects a different set. I would concentrate on the switch contacts and wiring. It may be a PITB to do but these are 80 year old contacts and need a thorough cleaning with a strip of paper and contact cleaner; be gentle. Also, be sure all the coils have continuity and have solid solder connection.


Messages In This Thread
Philco 40-180 Compensator Alignment - by tludka - 03-16-2022, 08:31 PM
RE: Philco 40-180 Compensator Alignment - by RodB - 10-28-2022, 10:12 AM
RE: Philco 40-180 Compensator Alignment - by RodB - 10-28-2022, 09:32 PM
462ron - by 462ron - 10-29-2022, 08:11 AM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
My Philco 37-116 Restore
Measuring from center tap like the tube voltages show. Cap 127 is isolated from ground. Cap 127 shown in upper left of p...dconant — 08:05 AM
My Philco 37-116 Restore
Are you measuring relative to the centertap or the GND?morzh — 11:57 PM
Philco 610B oscillator wiring
Still not clear on the wiring interface between the 6A7 and oscillator. After refering to the available schematics and s...Tubester — 07:18 PM
Refinishing Ideas
My 37-116 code 121 is the best sounding radio i have...a daily driver. Since we are talking about "changes". ...poulsbobill — 07:18 PM
My Philco 37-116 Restore
Hello, I finally got brave enough to take the cans off the Expander Unit. Got the grid cap wires replaced and back toget...dconant — 06:50 PM
Zenith H725
I got into the first AM IF can today, and found its mica was cracked. Amazing that it was still working. This one makes ...EdHolland — 06:10 PM
Philco model #20
AHH HA , I got it and can’t thank you fellows enough , when I changed the capacitors I took the advice and did not unsol...onlyrick — 02:24 PM
Zenith H725
Hello Ed, yes, I like letting projects run for few days to make sure they don't start acting up . Sincerely Richardradiorich — 01:03 PM
Philco 46-480 Electronic Restoration
I am almost finished with this restoration. All which remains is the power transformer. I cleaned it up some time ago, b...jrblasde — 12:41 PM
Philco model #20
I seem to recall in some TRF sets there being a Local/Distance toggle switch that removes the B+ from the first 24 rf tu...RodB — 09:46 AM

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

>