Here's a shot of my 9T246 after the recap & realign. My photography doesn't do the TV picture justice. This is the first 40's set I've done that actually works well on a cable signal, no adjacent channel interference at all, maybe it was the IF realignment.

This is another chassis with the 5 ohm resistor in series with the 6AL5 discriminator which was open and I didn't catch it due to the tube shield.


Chuck

9T246
 

Chuck,

Great picture & good alignment job! I wonder if more of these '40's sets would work on cable signals with a proper IF alignment?

Great picture
 

Hi Chuck, great job, it looks like new!

Eric

Re: 9T246
 

If I was a glutton for punishment I'd try another set, but it's easier to use a cheap cable converter for the signal source and I get REMOTE CONTROL!

Chuck

Actually, most of the postwar sets work fine on cable, if properly aligned. Cable TV has been around since the late 40s. Cable systems operate the audio carrier about 15 db below the video carrier to minimize the interference from lower adjacent audio.

Steve,

I don't think the problem is just the adjacent audio, the early cable systems carried just 12 channels (maybe). Now we have 80+ analog video carriers and 40+ digital carriers being pushed into a tuner that was designed to "see" one channel at a time at its input terminal.
I've seen modern sets that can't handle all that power.


Chuck

The selectivity of the RF stage was almost always good enough to deal with lots of channels. Some sets would overload, but if input levels were kept within normal range, there wasn't usually a problem. Early transistorized sets did sometimes have difficulties with lots of channels, and were more of a problem than early tube type sets.

Many cable systems had difficulty keeping levels constant, and often had significant "slope", with lower channels much stronger than upper ones. This often caused problems.

Chuck, that's a great looking RCA you've got there! Wonder what it is with those 6AL5 filament resistors :p:

RCA back together
 

Here's a shot of the 17" RCA put back together. I'm waiting on a few small tubes and the picture is a little snowy because it's only running on rabbit ears.

This is the NOS grade A Sylvania rebuilt CRT with "Silver Treated Phosphors" it really has a brilliant picture.

17" RCA
 

Eric,

I like that swivel stand! No such luxury with today's sets.:)

9T246
 

Chuck:
Impressive looking 9T246 restoration! Your photo reminded me of one I saw in Alsip Il, outside Chicago, about 3 years ago. I had dropped in on a supplier I use to pick up an order I was in a hurry for (600 mile drive in one day - ouch!) and of course asked if they knew of anybody that might have old TV's. I was given directions to an OLD repair store nearby, ran over and discovered a 9T246 in the window. Turns out they have had it since it was NEW, always in the window, always kept working, and presently left on at night using a timer! Man, this thing looked terrible, all faded, cloth sun rotted and hanging, but it worked a treat! I'd like to see a modern set survive that long in that environment, even with TLC!
Marlin

58 Zenith
 

Haven't been any posts added to this particular thread in over a month, so, I will add one to get it cranked up again.

I got this '58 Zenith two-toned grey portable from a friend a while back. Uses chassis 15A26 (Sam's 407-3). Naturally, the sleeve that the photofact goes in was empty! Curses! The set is in nice condition, but looks like the flyback and deflection yoke bit the dust! This set has a three-position knob on top for the antenna... similar to the adjustment on a set of rabbit ears I suppose. Even if it doesn't get fixed soon, it will be a nice display piece.

I believe I saw a similar set in the background of someone's photo recently.

Charlie, i have a similar Zenith with a bad CRT and a rusty cabinet. If the Fly and yoke will fit your set you are welcome to them.

Eric

Charlie,

That is a nice Zenith. They made a number of those 50's boxes with that theme of the main controls in the top corners. One even had them in pods hanging off the sides. Very stylish.

I hope your C.T. problem is getting better!

Regards,
Rob

An oldtimer tv repairman once called these "bug eye Zeniths". Can't imagine why.;)
Marlin