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Philco model 18 (code 121) - HELP!

When I first started this thing over a year ago, I seem to remember finding a wire going to that antenna coil that was not connected. Also, there were two ‘Tabs’ coming off the antenna coil that didn’t have any wires connected, one of them I assumed was the GND tab since there wasn’t a wire going to GND. In hind sight, I should have left the wire and the two tabs alone until I knew what the H**l I was doing (which from my experience won’t be for another several years jk) because if I would have forgotten that I hooked up the wires I may not have questioned to even check them.

The only way I found out that they were hooked up incorrectly was due to the fact that I drew out a picture of the coil and its tabs, numbered the contacts on my drawing, and then following each connection numbered the same contacts on the schematic. When I went to take measurements, the measurements where these two wires were supposed to be going were contradicting each other. The only way that can make sense (I thought) was if I was measuring a different wire than I thought I was, so I swapped them, re-measured and all connections checked out with relatively small resistance.

I’m not sure about the vane in the shadow meter…it seemed to move very freely, I even blew on it and it moved around very well. One thing I just noticed that I forgot to mention because I think I’m used to more modern electronics, and that is that the other bulbs is burned out (non-shadow meter bulb). Looking at the schematic a current does flow through this bulb to a pin on each of the #78 tubes. I think once I replace the bulb that will make a difference and then I’ll see where things are at.

Thanks Herb and Jerry you were both right about checking the coil and about where to check, thanks again. I’ll probably spray the vane anyway, just to make sure.


Messages In This Thread
RE: Philco model 18 (code 121) - HELP! - by morzh - 02-07-2013, 09:22 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 02-08-2013, 09:32 PM
RE: Philco model 18 (code 121) - HELP! - by Arran - 02-08-2013, 09:49 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 02-09-2013, 01:21 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 02-09-2013, 04:57 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 02-09-2013, 05:12 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 02-13-2013, 07:40 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 02-21-2013, 04:25 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 02-28-2013, 05:04 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 03-07-2013, 03:16 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 03-07-2013, 10:20 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 04-17-2013, 12:25 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 04-18-2013, 07:48 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 04-18-2013, 08:49 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 04-29-2013, 09:02 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 06-12-2013, 12:37 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 06-13-2013, 07:33 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 07-23-2013, 09:33 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 07-24-2013, 10:11 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 08-02-2013, 04:06 PM
RE: Philco model 18 (code 121) - HELP! - by morzh - 08-21-2013, 09:26 AM
RE: Philco model 18 (code 121) - HELP! - by morzh - 12-17-2013, 09:58 AM
RE: Philco model 18 (code 121) - HELP! - by morzh - 12-19-2013, 11:47 AM
RE: Philco model 18 (code 121) - HELP! - by morzh - 12-19-2013, 07:48 PM
RE: Philco model 18 (code 121) - HELP! - by Pithicus999 - 01-06-2014, 11:45 AM
RE: Philco model 18 (code 121) - HELP! - by morzh - 01-17-2014, 03:05 PM



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