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 shortwave band operation
#3

thank you, ron, for your reply. the one-turn loop is connected to both the points you mention. from the visible side of the 38-9884 board, there are no breaks nor frayed parts of the wire. i can not see the top of the board to determine if the loop is intact. the soldered joint, where the wire from screw number #3 connects to, appears to be newer. i assume it may have been re-soldered with the 1993 repairs.

at this point there still is no shortwave nor police band, and i am starting to work through your bullet points.

i would like to ask if there is a reference manual, or book, or downloadable diagram to identify the internal components? something in addition to the wiring schematic. since i am new at this, i am not sure how i would clean the band switch.

i opened the schematic for the model 40, but i have no electronics background to read the symbols. the 39-6443 label inside the cabinet listed the tubes, and this radio does have the 6J8G tube. how do i check the tube out to see if it is oscillating at all frequencies, do i take that to a local antique radio club?

and finally, in another topic area, the insulation on all the wires leading from the antenna terminal board, and on the 1 wire from the small two-screw board inboard of the antenna terminal board, is cracked in places showing exposed bare wire. what is the recommended replacement wire?

thank you again for your time...


Messages In This Thread
philco 40-180 shortwave band operation - by Guest - 04-26-2008, 12:27 AM
[No subject] - by Ron Ramirez - 04-26-2008, 08:08 AM
[No subject] - by Guest - 05-10-2008, 06:38 PM
[No subject] - by Ron Ramirez - 05-11-2008, 11:26 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco Model 16 wiring question
Well, finding a short is easy. Like I said, disconnect the transformer's secondary windings and see if it persists. If...morzh — 09:48 PM
Restoring Philco 96
Nice one!Stan the Man — 09:37 PM
Restoring Philco 96
I have eventually replaced the speaker and shot the video, which only shows the upper part of the dial as the hum is ver...morzh — 09:24 PM
Rogers Majestic R-646
Kinda weird to see both open Nothing weird if you remember that this radio is about 100 years old  :)Vlad95 — 07:49 PM
Philco 42-345 Restoration/Repair
I believe I'm making progress, resistors have been rechecked and corrected, removed that ugly blue capacitor and more wi...osanders0311 — 07:38 PM
Philco Model 16 wiring question
Thanks Morzh Yes I recapped everything and replaced almost all the resistors as well. I redid #99 with .015 safety ca...bobclausen — 07:11 PM
Philco Model 16 wiring question
Well...pull out every single load of the transformer. For every winding. Unsolder if needed. Then re-do your dim bulb....morzh — 07:02 PM
Rogers Majestic R-646
Kinda weird to see both open, but once you get it up and running, really pay attention to your sound. Listen for loud cr...TV MAN — 06:59 PM
Rogers Majestic R-646
Vlad; I was just reminded of something else, I'm not sure why but many Rogers built sets do seem to have open primari...Arran — 04:40 PM
Rogers Majestic R-646
Thanks RpdB I don't think there's much difference with interstage transformers of different models other than dimersion...Vlad95 — 03:27 PM

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

>