Ctc ??
 

Here are some pictures of the CTC , it works very well but again not sure what model it is. It also has UHF, does anyone have an idea of what model it is? It says 1958 on a tag in it. If you need chasis pics I can get some.

There's no chassis stamp with the number on it or it's missing?? Yeah, a back shot may be handy. That would be rare to have a UHF option!

Okay, I'm 'gonna say a CTC-7 and it has 5U4's mounted on the P/S Transformer and a 21CYP22 CRT.

here are some chasis shots very dark but the best a phone cam can do, I found ctc 9 possibly but it is double stamped smeared and too hard to read.
shows uhf, circuit boards and UHF tuner in the pics

If it's a 1958 model for sure, it has to be a 7, but it does look like a 9 to me (based on the cabinet style). That would make it closer to '59/'60.

Charles

I see it has printed circuit boards my CTC 7 does not could be a CTC 9 not sure when they started that.

This set is either a CTC9 or 10.

You can tell the difference by what the vertical sweep tube(s) are/is...

If it uses a 6FQ7 and a 6AQ5, it's a 9.

If it uses a single 6EM7, it's a 10.

Confidential to damen...

If you have a CTC7 chassis that does not have printed circuit boards, I can assure you that it is the ONLY one EVER produced, and is truly one of a kind.

But I seriously doubt that...

RCA began using PC boards with their CTC4 chassis, and they never stopped.

Mine has circuit boards but they are plain with no print

6DQ5 and 6*** G (is faded) but has a Kinescope 21cyp22A CRT if that makes a difference,And not familiar at all with early RCA.

I'll go out on a limb here and say it's a late production "Mark Series" CTC-7. "The Meredith."
The CTC-9 sets did not use 5U4's.

Courtesy Ed Reitan's site:
CTC-7_Meredith300.gif
Address:http://www.novia.net/~ereitan/Galler...eredith300.gif

-Steve D.

I cleaned the stamping up it looks like it could be a 7 but it has side mounted chasis I hear that was only on the 9 and above, I cant find much info on the 5-7 or 9 differences, Steve very nice ct-100 BTW!

I may be incorrect, but I believe the CTC-7 chassis has a vertical (side mounted chassis). If there is a tube chart on the inside of the cabinet the CTC-7 has a pair of 12BH7 tubes for R-Y B-Y color amps and the G-Y color amp.
The CTC-9 has a pair of 6CG7 tubes for the B-Y R-Y color amps and the G-Y color amp. This should tell you what chassis you have.

-Steve D.

As you can see that chart is very hard to read but it is there, maybe this will help with a better chasis pic too

Kalamazoo DJ

Dug out my SAMS CTC-7 Photofact.
Comparing your tube chart photo, not easy on the eyes, to my SAMS CTC-7 tube layout shows that they are not the same. There should be NO 12BH7A tubes on your tube chart. I now believe your set is the CTC-9 "Boswell" model.
The SAMS also confirms that the CTC-7 has a vertical (side mounted) chassis.

The CTC-7 black metal "Meredith" and CTC-9 "Boswell" are pretty much identical in appearence.

From Ed Reitans site:
CTC-9_Boswell595.gif
Address:http://www.novia.net/~ereitan/Galler...Boswell595.gif

Thanks for the nice comment on my CT-100.

-Steve D.

You're correct; all 7s through 11s are side mount chassis. The 7s I've seen, all had side controls and side aux control door, whereas the 9 had side or front controls, and front aux controls (exposed at bottom).

Charles

The tube layout posted above shows 6EA8s for 1st sound and Color killer. Those tubes would be correct for a CTC9.... a CTC7 uses 6U8s for those two functions.
jr

Charlie showed me pictures of the "BOSWELL" it looks very similar, but mine must be missing the V shaped trim just under Nipper and RCA VICTOR. If it is a CTC-9 where would I find cabinet parts for something like this? Any resources for these in particular?

Varified today, it is a ctc-9B as I was cleaning inside it, I found a service tag from 1967 and some extra tubes.

I was going to say, that is a CTC-9. I have a CTC-9 "The Felton" in a ugly looking woodgrain metal cabinet. I have to recap mine as I never realized those brown-maroon colored capacitors are dipped paper. I did recap the electrolytics and used two NTC resistors for R172 which required 80 ohms cold and almost no resistance hot. I can't remember why I replaced it, I believe it was broken in half or failed. My chassis will turn on and I can get sound, though I never hooked it up to the picture tube yet. Plus, my cabinet has transformer goop from the chassis being flat on the cabinet and the goop slowly leaking out. I wish I knew how to remove it, because it won't come off easily.

Jonathan

In the 1950s it was rare to see a TV with UHF, as most older cities did not have UHF stations until the '60s. My best guess, however, is that these late '50s sets with UHF tuners sold very well in UHF-only markets such as Scranton, Pennsylvania, Youngstown, Ohio, Fort Wayne, Indiana, Fresno, California, et al. If the sets lasted long enough and were located in markets with VHF stations but no UHF ones (at the time the set was purchased), the sets would be ready (no need for a converter) when UHF stations arrived in these areas.

I've never heard of that (transformers leaking anything other than oil) in 40+ years of electronics experimenting. However, I sincerely hope that "transformer goop" isn't leaking from the power transformer. I'm surprised the set works at all if the power tranny is what's leaking. These transformers can be difficult if not impossible to find for antique TVs if they are defective, unless you can cabbage one from a junker.

As to why the "goop" won't come off the chassis easily, I don't know. There must be something in the stuff that bonds it very well to metal, on contact. I can understand why you want to get the goop off the cabinet, as I'm sure it does wreck the appearance of the latter, even if it is only woodgrain vinyl over a metal cabinet.

Interesting now with DTV, I think I might be able to pick up 16,22,28,41,46 one station out of Battle Creek MI and four stations from South Bend IN but with Direct TV I never tried it since I crashed the antenna to the gound to get it off the roof.

Are you sure about that? My two CTC-11s are full of "maroon drop" caps that look like newer Mylar "orange drops" except for the brownish maroon color. I replaced the electrolytics but left the maroon drops in place, and both sets play fine.

I don't know exactly when they started using Mylar caps. Anyhow, you might want to check a couple of those maroon guys before you shotgun all of 'em.

Phil Nelson

Remember, that while digital stations in your area may be transmitting on UHF frequencies that you can "tune" with the UHF tuner in your set, you will see nothing more than increased "snow" when you tune these channels. An analog (NTSC) TV by itself cannot decode the Digital (ATSC) data that is being transmitted.

For Kalamazoo, the FCC lists two analog stations (WUHO Ch 36 and WOKZ Ch 50) that your UHF set might be able to receive off the air, without a digital converter box:

http://www.fcc.gov/fcc-bin/tvq?state...&slon2=&size=9

To look up other TV stations on the FCC site go here:

http://www.fcc.gov/mb/video/tvq.html

jr

ok thanks, that is WOTV/Wood weather doppler radar map I think or maybe that christian station hmmm I didnt think they did much change in UHF around here.WUHQ used to be 41 then wotv/wood got it last

"hmmm I didnt think they did much change in UHF around here."

Yes, at the transition many channels changed frequency... the FCC allowed each station the choice of remaining on its digital channel, or moving the digital transmission back to its old analog frequency. There was also some "horse trading" among stations, to improve coverage, or perhaps save power. People were told to "re-scan" their digital over-the air converter boxes, to detect the changes. Since the digital signals allow for "virtual channels", the actual transmitted channel can move all over the place, but the channel number reported on the converter box remains unchanged, so that the station "brand" is not changed. I still watch "channel 6 news" in the evening... the studio set has not been changed... my Sony DTV reports it as Ch 6... but the actual signal is on CH 40!

jr

JR tech ok I think I see it channel 7 is actually wood tv 8? always so easy when the government gets involved lol

'Tis true... WOOD TV 8 actually transmits their digital signal over-the-air on Ch 7, but the "branding" remains Ch 8, thanks to "virtual channel numbers". I suspect that the station is still seen on Cable Ch 8 as well. The illusion is complete, and most people do not really know or care about the changes of *actual* over-the-air frequencies, but it is an important factor when purchasing the proper antenna for a given area...

The whole thing sorta reminds me of the "who's on first" routine!
jr

I'm from and currently live in the Scranton-Wilkes Barre area, and the only VHF station that we had was W07BV, which was a low power EWTN affiliate, and I don't believe is broadcasting anymore. Our NBC and CBS affiliate broadcast on RF channels 13 and 11 now, but before the analog switchover it was all UHF except for W07BV which is on channel 7.

And the goop is putty-like in consistency, leaking out of the same hole that the wires come out of on the power transformer. It's not really "leaking" but seeping out ever so slowly. Some of it is running down the safety glass, and takes days for it to move a half an inch. It seeped out because the chassis was horizontal, not vertical. It's a tan color. I have no idea what could remove it. The power transformer still works fine. I can't peel it off because it's very sticky, and like a putty.

RCA parts list says they are indeed paper. I thought they were ceramic until I cracked one open. They look like paper with the silver foil. Since audio worked on the chassis, I'm willing to bet a lot of them are still good. I doubt they are mylar. Attached is a few pictures of one broken open, though a bit blurry.

Most TV stations still brand themselves using their old pre-DTV channel numbers to avoid confusion. I live near Cleveland, which has channels 3, 5, 8, 19, 25, 43, 55 and 61. Every one of these stations still uses their old pre-transition channel number for station identification and news branding (our network stations have had "Channel 3 News", "News Channel 5", "Fox 8 News" and "19 Action News" for some time, long before TV went all-digital; they kept these brands after June 12 last year and have no intention of changing them any time soon).

This practice is being followed by most TV stations today, again to avoid confusing viewers who, as you said, don't care about the number to the right of the decimal point all DTV stations use to indicate their actual channel number. This is also why DTV converter boxes, for the most part, show the virtual channel number of the station being viewed; for example, DTV channel 2.1 will be shown on the channel display panel as channel 2.

On cable, however, the channels will always display on your cable box or on your television as whole numbers. For example, I have basic cable service from Time-Warner, no cable box. The channel numbers on my TV correspond, for the most part, to the stations' actual broadcast channels; for example, channel 3 on cable shows as channel "03" on my TV's OSD display, channel 5 as channel "05", and so on. The only exceptions are the UHF stations, which are downconverted by the cable company to VHF channels. The CBS station in Cleveland is on RF channel 19, but the cable system converts it to channel 4; the local MyTV affiliate on RF channel 43 is converted to cable channel 6, the "CW" affiliate on RF 55 is downconverted to cable 9, and the two PBS channels on RF channel 25 and 49 are converted to cable channels 10 and 20, respectively. I once asked a service representative at Time-Warner Cable why they didn't put the UHF stations on their regular (my term was the "right", meaning the stations' actual) RF channel numbers on the cable. I was told that, in the case of Cleveland's CBS affiliate on RF channel 19, the network wanted the station on channel 4 on cable!

I couldn't believe it. What right does a television network have to dictate to a cable company on what channel to put an affiliate of that network? Time-Warner or CBS do not own CBS channel 19 in Cleveland (the station is in fact owned by Raycom National), so I do not see what right either entity has to dictate that the station will be carried on channel 4 instead of channel 19. The latter channel is blank on the cable in my area, so I wouldn't have thought it would be any trouble at all for the cable company to put CBS 19 on this blank channel position--but apparently Time-Warner had other ideas, or else the service representative to whom I spoke did not know what he or she was talking about when he/she told me that CBS told them to put CBS 19 on channel 4 on all TW cable systems in northeastern Ohio. :scratch2:

AT&T then Comcast Cable and what ever else it was here at one time used to block Indiana WSBT CBS because WWMT CBS was in Kalamazoo and the same for Ch 10 in Lansing and Wood tv8 in GR. With Direct TV you can change your zip code and get local channels in that zip code you give them. I did it once to get local better indiana channels I wanted And WWMT and WOOD tv are in the correct placements for the numbers right now on Direct at least. CW-7 came along I have NO Idea what that is, they just advertise it every 5 minutes on Wood-8.

Oh my! what a confusing situation ! :D It is a sub-channel (3.2) on WWMT:

http://www.cw7michigan.com/sections/faq/

WWMT according to the FCC *actually* transmits on CH 2, but has a construction permit to move to Ch 8.

Ah I suppose I would get yelled at for rules so anyway lol but I hope that kalamazoo station goes up north somewhere literally to the UP of Michigan with Red Green LOL they seem to be magnetized to GR and HOLLAND so they can go!! Now they are taking 8's number spot so they can move right up there physically too.

LOL! the great digital shell game.
I suspect that over time many stations that have landed on low band channels will find that low band VHF (2-6) does not work very well for digital and will apply to the FCC to move to high VHF or UHF. Also I see that many that landed on high VHF have applied for a power increase or a move to UHF to get better coverage ! The fat lady ain't sung yet! :D

jr

I've said this before, but will say it again--the FCC should have left the old NTSC television system alone, as everyone knew where all the stations were in a given area with that system; there was none of this business with subdivided channels and so on as there is today, and not nearly as much confusion. Moreover, with analog NTSC, you could get a snowy picture if the signal was weak; with digital, it is all or nothing--either you see a picture or you don't. This is very likely frustrating for OTA viewers trying to watch a particular channel, and having to move the antenna around the room trying to find the spot with the strongest signal. Even cable channels run into problems like this every now and then. I have TW basic cable (no box), and every once in a while the pictures will pixelate or freeze on the screen; the sound goes when the picture acts up, of course. This was all but unheard of with analog NTSC TV, but with DTV we have to be ready for a bunch of new problems. When DTV works it works very well (I can notice the difference in picture quality even on my 10-year-old RCA CTC-185 analog set), but when it goes awry ... look out.

My goodness! Who would have thought that the digital transition would cause so many problems with OTA reception, finding the stations on your TV, etc.? Because of DTV, every local TV station in the US has had to replace transmitters, antennas, and so forth, which causes confusion for viewers because the stations often wind up on digital channels that often are quite different from the stations' RF channels.

The DTV OTA reception problems are something else TV viewers don't need, but are experiencing in some areas, especially those that have DTV stations on VHF channels. Many of these VHF stations have applied to the FCC for permission to increase transmitter power, as one station did in Philadelphia last summer, not long after the transition. Other VHF DTV stations are seeking permission to move to UHF channels. I'm not sure by any means, but since the transition I think every one of Cleveland's television stations, including our three original network ones, are now operating on UHF frequencies. However, to viewers with DTV converter boxes or using TVs connected directly to cable, the channels will appear as whole numbers on the channel displays, as I mentioned in another post.

I was surprised to read in the informational post on upper Michigan's "The CW7" station that indoor antennas absolutely cannot be used for reception of DTV stations on channel 2. The article stated that a standard, full-length antenna is required for optimum (or in some cases and in some reception areas, any) reception of stations telecasting on that channel. I can remember the old Rembrandt VHF/UHF rabbit ears TV antennas that had 102" (well, in any case, very long) dipoles, the full length of which was needed in those days for optimum reception of VHF analog channel 2.

That was then. This is now, however; we have come almost full circle in the last 60 years. I have a feeling that an updated version of those old Rembrandt set-top antennas with long dipoles and amplifiers may appear in stores before too long, for use by folks who cannot use outdoor TV antennas and/or refuse to pay for cable or satellite.

If most TV stations eventually move to UHF, however, the antennas will be much smaller, but the amplifier (if any) would be retained as many DTV stations, even those transmitting on UHF channels, are still too weak to be received well with indoor antennas in all signal areas. The best bet, if it is at all possible, however, is to use an outdoor antenna for DTV, unless you are within a stone's throw (literally) of the stations' towers. DTV signals are still too weak in most areas, or there are other problems such as reflections and/or dead spots, to be received reliably (or at all) with indoor antennas, even amplified ones.

I know when I had my original Zenith roundie in 1978 with a rooftop antenna with no rotor I could get 3,6,8,10, 13,41,47,MI channels ( and at night channel 50 in detroit) and 16,22,28,46 Indiana Channels. And one from Chicago IL. And it seems to be the way of the day to have ALL or NONE of about everything.