Ctc ??

[jr_tech]

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

[Kalamazoo-DJ]

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?

[Kalamazoo-DJ]

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

[Jonathan]

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

[Jeffhs]

Originally Posted by marty59

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!

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.

[Jeffhs]

Originally Posted by Jonathan

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

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.

[Kalamazoo-DJ]

Originally Posted by Jeffhs

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.

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.

[Phil Nelson]

Originally Posted by Jonathan

brown-maroon colored capacitors are dipped paper.

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

[jr_tech]

Originally Posted by Kalamazoo-DJ

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.

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

[Kalamazoo-DJ]

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

[jr_tech]

"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

[Kalamazoo-DJ]

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

[jr_tech]

'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

[Jonathan]

Originally Posted by Jeffhs

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.

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.

Originally Posted by Phil Nelson

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

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.

[Jeffhs]

Originally Posted by jr_tech

'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...

jr

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.