Rca 621TS

[Crist Rigott]

I powered the set up.
First with the low voltage rectifier removed. All the tubes lit up. Then with the low voltage rectifier in but the H output tube plate cap removed. I measured 263 volts! Riders says 265 volts. I received good audio from a local OTA broadcast! Then on goes the H output tube cap connection. No raster. Bummer. Then I remembered the ION trap. Moved it around a little. Nice bright raster!

Hooked up my converter box and now the audio isn't so good on channel 4. But I got a picture! Horizontal sync needs lots of help. I'll bet its a mica cap. All-in-all, this set looks like it'll do good.

[dieseljeep]

It looks like someone eliminated the PM ion trap and used the resistor in its place.

[Crist Rigott]

Originally Posted by dieseljeep

It looks like someone eliminated the PM ion trap and used the resistor in its place.

I think he eliminated the electro-magnet, installed a resistor in its place, and installed a permanent magnet ION trap.

[Crist Rigott]

BTW, I'm making a list of all the resistors and capacitors used in this set.

I'll do my usual practice of going up in wattage on the resistors.

I'll use the yellow tubular film caps from Sal or Just radios all rated at 630V.

All micas will be at least 5% 500V rated.

The E-Caps will be 450V or 500V except for the few odd values and much lower voltages. Those will still get at least 250V simply because the leads are thicker and less prone to breakage.

I know there is a door knob cap rated at 500pf but no voltage is given. I'm guessing at least 10K?

Are there any other caps that are rated at a higher voltage? I see C141 a 56pf cap in the yoke. Would this be like a 1KV or higher?

[dieseljeep]

Originally Posted by dieseljeep

It looks like someone eliminated the PM ion trap and used the resistor in its place.

I meant it the other way around! Subsituting a PM ion trap for the EM ion trap and using a resistor in its place.