Show us your vintage B&W sets! - Page 17 - Videokarma.org TV - Video

kc8adu · #**241** 03-09-2003, 09:04 AM

i found one of those "bug eyes" zenith sets on the curb a while back.
it has a good tube and fly but i need to change a gazillion black beauties

to get it working right.

captainmoody · #**242** 03-14-2003, 08:04 AM

Here's a 1955 Motorola I just picked up off ebay for 15.00. The only reason I bid on it was of it being only 15 min from my house! Actually it turned out to be a nice set, Although large, (24" crt model.) The crt is a replacement RCA Silverama that is like new still. All the set needed was the peaking coil replaced.

Rob · #**243** 03-14-2003, 10:15 AM

captainmoody,

Congratulations. That Motorola is in really nice condition, and the large 24" tubes aren't found very often. Can't beat the price either. You did good.

Rob

***Eric H*** · #**244** 03-16-2003, 07:46 PM

I just got back from picking this one up.

It's very clean, there's a mark on the plastic surround from the cord having laid on it at some time but it should buff out, inside it's incredibly spotless!

The 14AJP4 CRT is a bit of an oddball, it has a small neck and may be 110 deg but it still has an Ion trap! said CRT is also really really dead

but I may have a line on one.

jshorva65 · #**245** 03-16-2003, 09:31 PM

Quote:

I wonder if more of these '40's sets would work on cable signals with a proper IF alignment?

With proper alignment of the RF and IF circuits, each channel's response curve would have the correct shape to pass only that channel's signal through to the detectors. Accurate, precise and stable marker frequencies are essential for proper alignment. I allow my alignment instruments and the chassis under test a 45-minute warmup period before beginning alignment and verify each marker frequency with a frequency counter.

Jeffhs · #**246** 03-22-2003, 12:08 PM

Eric -

In answer to your comment about the meaning of the term "Golden Grid": This referred to the tuners in top-of-the-line Philco TVs of the 1950s, which were designed with what were known as "cascode" RF stages (generally using 6BQ7 and/or 6BZ7 RF amplifier tubes). These tubes were actually two tubes in one envelope with, in Philco sets using this type of tuner (if I remember correctly) gold-plated grids. The cascode tuner, with its 2-stage RF amplifier, was designed for extra signal amplification in television fringe areas, far from the nearest TV station. (In the early 1950s, television stations, which were mostly VHF at that time, were not nearly as powerful as they are today, hence the need in fringe and even some suburban areas for boosters and other methods of signal enhancement such as cascode tuners).

Philco also produced a line of TVs in the 50s it dubbed "Microgrid 390". (I had one of these sets about 30 years ago, which worked well until the CRT gave up; then I moved and it went out with the trash.)

If I remember correctly, these sets were extensions of the Golden Grid series, using the same type of tuner. What the 390 stood for, however, I couldn't tell you.

BTW: You have done an excellent job of restoring your set's cabinet; it looks wonderful in the picture. I wish my old Philco, and several other old wood-cabinet consoles I had in the late 1960s-early seventies, had looked that good!

Good luck. I sincerely hope your Philco gives you many more years of enjoyment. I'd hold on to that set if I were you, since Philco is out of business (has been for some time) and no one makes TVs (or anything else, for that matter) like that anymore.

#**247** 03-23-2003, 01:22 AM

Several other manufacturers (Admiral was one) also used the 6BQ7/6BZ7 cascode tuner circuit, but did not promote it as "golden grid". Gold plated grids were a feature of the 6BQ7 & 6BZ7 tubes used in those tuners.

ChuckA · #**248** 04-16-2003, 10:03 PM

I finally picked up this Philco 48-1050 I bought about a year ago. Turned out much better than I imagined.

Chuck

Rob · #**249** 04-16-2003, 10:50 PM

ChuckA,

Took you a whole year to prep youself to pick this set up? Must be heavy!

I've never seen this model before. What a beautiful center piece of attention for the living room of yesteryear. I are impressed!

Rob

ChuckA · #**250** 04-16-2003, 11:08 PM

Rob,

It doesn't weigh much more than the table model 48-1000.

Even had the original owners manual stuck inside.

Chuck

***Eric H*** · #**251** 04-17-2003, 01:06 AM

Wow Chuck, that s a beautiful set!!
I couldn't have waited a year to get that home

Eric

jshorva65 · #**252** 04-28-2003, 12:16 AM

Working on my Fada 799 at the moment. Cabinet is in near mint condition, unmolested dusty chassis cleaned up nicely, super-strong 10BP4, may need several caps, tunes in sound and snowy picture as-is. Tuner is touchy because the detent clip is broken, but I'll find a source for the parts I need. I'll keep everyone posted as to progress.

ChuckA · #**253** 04-29-2003, 07:28 PM

Most recent set to follow me home from a local auction. Spent 4 hours waiting for it to be put up.

Chuck

Rob · #**254** 04-29-2003, 07:39 PM

ChuckA,

Nice Porthole! That grille is most unusual. Do you think it is factory issue?

Rob

ChuckA · #**255** 04-29-2003, 08:47 PM

Quote:

Originally posted by Rob

That grille is most unusual. Do you think it is factory issue?
Rob

Rob,

Don't know, I just unloaded it in the garage and haven't looked to closely at it yet.

Went out to look it over, it's a model H2449E, 16GP4 CRT. I looked at the grille decoration, if it's not original someone went to a lot of trouble making something that fits that opening perfectly.

Looking at Riders I think it's 1950.

Chuck