1951 Zenith 16" Porthole

[Radiotronman]

Here is a picture with the doors closed. I like the more modern look to this over my other set which is more traditional. It also has very nice piano hinges down both full length doors and thick wood slats in the speak area. This set had many scratches, but good enough not to refinish. Maybe I'll use Howards restore a finish or just som red stain. The thread on how to display your sets has inspired me as I finish my basement in the next year. I decided I'd like to display and have working my better sets, like this one. If I can't make a deal on the chassis, because the seller is deciding on keeping it it not, then I may display it in the blonde cabinet.

[Radiotronman]

Here is the chassis with the 16" metal coned CRT. I've got a few portholes now, but still yet to come across a 19" porthole.

[Radiotronman]

Here is the underside of the chassis. I replaced a few of the capacities that I had. It looks pretty much untouched. It's amazing how much lighter this chassis is with a metal coned CRT. But I think they made up for it on the cabinet, as it's super heavy and every piece of wood on it is an inch thick.

[dieseljeep]

Originally Posted by Radiotronman

Here is the chassis with the 16" metal coned CRT. I've got a few portholes now, but still yet to come across a 19" porthole.

The set uses the old 52 degree 16EP4, not the newer 16GP4 70 degree CRT.

[John Marinello]

Originally Posted by dieseljeep

The set uses the old 52 degree 16EP4, not the newer 16GP4 70 degree CRT.

Wrong, x2.

24H20 chassis use the 16GP4.

The 16EP4 is a 60 degree tube.

[Radiotronman]

The picture us a little dim, but if you look on the upper right hand if my cabinet tube layout, it lists the 16GP4 for both 24H20 and 24H21 chassis. The schematic for this set (SAMs 120-13) also list it for the 16GP4.

[John Marinello]

Originally Posted by Radiotronman

The picture us a little dim, but if you look on the upper right hand if my cabinet tube layout, it lists the 16GP4 for both 24H20 and 24H21 chassis. The schematic for this set (SAMs 120-13) also list it for the 16GP4.

That's just a tube layout, and covers the 24H20 (16") & 24H21 (19") chassis,
which were similar. If you look at the CRT, It shows 16GP4 OR 19AP4.

The 16GP4 is a 70 degree tube, and the 19AP4 is a 66 degree tube.

[Radiotronman]

Finally got around to placing my order for capacitors and decided to recoat the flyback and clean the dust inside the cage area. The flyback had pieces of the original coating laying at the bottom which I removed. I recoated it with rtv sealant and I'll reinstall the casing once it cures over night.

[dieseljeep]

Originally Posted by John Marinello

Wrong, x2.

24H20 chassis use the 16GP4.

The 16EP4 is a 60 degree tube.

If I'm going to be wrong, I do a good job of it!
I looked at the Riders #6 coverage for that chassis and it looks like it was the last run of the portholes. They did have to switch to a 70 degree sweep to incorporate the 16 and 19" CRT.