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Restoring a Model 19 Code 126
#54

I have also posted this to the other place. I apologize if that is bad form Icon_biggrin .

Here is where I am at. I discovered that when I attach a 4 foot length of wire to pin 4 of the 36 oscillator tube, the radio works beautifully. I can tune in stations reliably clear across the band. I can hear a zero beat of the oscillator in a small transistor radio that I hold nearby.

As soon as I disconnect the 4 feet of wire, the oscillator stops. The zero beat in the nearby radio dies. Reception across the band dies. I discovered this effect originally when I tried to connect a scope probe to pin 4 and the radio started working.

I have played with 2 different values of the #10 resistor, both 13,000 ohms and 8,200 ohms. Neither seems to make any difference.

I know the oscillator in this radio can be very finicky. I have done the whole baking of the oscillator coil and rewind of the tickler. I have checked tube voltages. I also have a length of antenna wire connected at all times to the antenna terminal. Performance degrades when I disconnect that, of course, but the oscillator does not stop. However operation of the oscillator seems completely dependent on the wire I connect to pin 4 of the 2 tube.

Do any of you that have experience with the radio have any suggestions?

Thanks!

Mark


Messages In This Thread
Restoring a Model 19 Code 126 - by markmokris - 03-06-2015, 12:18 AM
RE: Restoring a Model 19 Code 126 - by klondike98 - 03-06-2015, 08:55 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-06-2015, 02:41 PM
RE: Restoring a Model 19 Code 126 - by klondike98 - 03-06-2015, 03:03 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-06-2015, 03:59 PM
RE: Restoring a Model 19 Code 126 - by morzh - 03-06-2015, 10:38 PM
RE: Restoring a Model 19 Code 126 - by morzh - 03-07-2015, 05:54 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-07-2015, 11:19 PM
RE: Restoring a Model 19 Code 126 - by morzh - 03-07-2015, 11:23 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-08-2015, 03:37 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-09-2015, 11:16 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-10-2015, 08:16 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-11-2015, 04:01 PM
RE: Restoring a Model 19 Code 126 - by morzh - 03-11-2015, 06:25 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-11-2015, 07:25 PM
RE: Restoring a Model 19 Code 126 - by VE6ZRT - 03-11-2015, 07:33 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-11-2015, 07:53 PM
RE: Restoring a Model 19 Code 126 - by morzh - 03-11-2015, 08:45 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-11-2015, 10:06 PM
RE: Restoring a Model 19 Code 126 - by morzh - 03-11-2015, 10:24 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-12-2015, 04:11 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-14-2015, 08:58 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-14-2015, 09:41 AM
RE: Restoring a Model 19 Code 126 - by morzh - 03-14-2015, 10:52 AM
RE: Restoring a Model 19 Code 126 - by morzh - 03-14-2015, 10:59 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-15-2015, 06:05 PM
RE: Restoring a Model 19 Code 126 - by morzh - 03-15-2015, 07:42 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-17-2015, 02:13 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-17-2015, 08:46 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-17-2015, 11:11 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-17-2015, 11:32 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-21-2015, 05:45 PM
RE: Restoring a Model 19 Code 126 - by klondike98 - 03-21-2015, 07:20 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-22-2015, 09:45 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-22-2015, 09:52 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-24-2015, 09:23 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-24-2015, 09:24 AM
RE: Restoring a Model 19 Code 126 - by klondike98 - 03-24-2015, 09:46 AM
RE: Restoring a Model 19 Code 126 - by VE6ZRT - 03-24-2015, 12:26 PM
RE: Restoring a Model 19 Code 126 - by Mondial - 03-24-2015, 12:57 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-24-2015, 03:08 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-24-2015, 08:44 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 03-28-2015, 09:00 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 04-06-2015, 11:31 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 04-07-2015, 03:34 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 04-10-2015, 02:19 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 04-11-2015, 03:53 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 04-14-2015, 09:33 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 04-21-2015, 03:49 PM
RE: Restoring a Model 19 Code 126 - by markmokris - 04-24-2015, 08:25 AM
RE: Restoring a Model 19 Code 126 - by Eliot Ness - 04-24-2015, 10:18 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 04-24-2015, 11:29 AM
RE: Restoring a Model 19 Code 126 - by markmokris - 12-05-2015, 02:36 PM



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