Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives :: Books
Support This Site: Contributors :: Advertise


It is currently Dec Sun 17, 2017 8:29 pm


All times are UTC [ DST ]





Post New Topic Post Reply  [ 12 posts ] 
Author Message
 Post subject: Sams folder 704-4 August 1964 ???
PostPosted: Oct Thu 26, 2017 1:48 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1517
Location: Monroe, NC 28112 USA
Anybody have this Sams folder 704-4 with the Sears model 4146?

What I'm interested in seeing is the schematic of the tuner. I'd like to know if it had a separate RF amplifier tube or was it using a cheaper design? Wondering if this set would have been regarded as a decent TV for fringe areas.

Are there TVs out there that were highly regarded for their sensitivity at the time? Don't think I've ever seen a comparative article.

Thanks,
Robert


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Oct Thu 26, 2017 4:57 pm 
Moderator

Joined: Jan Thu 01, 1970 1:00 am
Posts: 25802
Location: Detroit, MI USA
Zeniths with the Gold Video Guard tuner using a frame grid tube like the 6HA5, and RCA's with the Nuvistor tuner featuring a 6CW4/6DS4 were regarded by those of us in the service industry as the best sets for long distance reception. They would run circles around many other brands for reception, provided the owner had a decent antenna system. I remember several of our customers that had a 30-40 foot tower or their antenna was on a 10' mast on the rooftop of an old two story home in the city who could pick up Lansing which was about 100 miles away like it was a local station on a good day. Back in those days it was quite popular for football fans to go to extremes to be able to watch their favorite teams which were not broadcast locally and those customers always had either a Zenith or RCA.

The Silvertone would have been a Warwick product since Sears owned Warwick as their major source of home electronics at that time. Most of their TV's weren't bad, although they were often built to a price point. TV's of that vintage had an RF amplifier stage, you needed that even for local reception.

_________________
Dennis

Experience is what you gain when the results aren't what you were expecting.


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Oct Thu 26, 2017 6:51 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1517
Location: Monroe, NC 28112 USA
Thanks for the comments...

Were the RCA tuners with Nuvistors only on color sets? I see the tubes were released in 1959.. I'm guessing that RCA was making table model and console B&W TVs for most of the 60s Right ??? Then at some point wood table models and consoles were only color sets... All the B&W stuff only in metal portable cabinets... Right ???

Robert


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Oct Thu 26, 2017 7:24 pm 
Member

Joined: Apr Mon 24, 2006 1:05 am
Posts: 2276
Location: Ellington CT
Nuvistors were also used in B/W sets. B/W TVs were available in wood or simulatedwood but non metal console cabinets, also metal through the 60s, and maybe into the early 70s. After that it was pretty much plastic.

_________________
"There Is Nothing Finer Than A Stromberg-Carlson"


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Oct Thu 26, 2017 8:23 pm 
Moderator

Joined: Jan Thu 01, 1970 1:00 am
Posts: 25802
Location: Detroit, MI USA
RCA had plastic cabinets on many of their black and white portable TV's in the early 60's. Zenith sets tended to be heavier and you will find a lot of metal cabinet black and white Zenith portables as late as 1965. True table models with no handles were offered in wood and sometimes metal cabinets, those were typically 23" sets.

Zenith built black and white 23" consoles in wood cabinets well up into the 1970's, they were a favorite of senior citizens who had never owned a color TV and didn't really care for color. We had many customers that "upgraded" from something like a 1950 DuMont or 1952 Admiral black and white set to a 1972 Zenith black and white console.

Nuvistors were also used in some FM tuner front ends, and in some test/commercial/military equipment. They weren't nearly as reliable as RCA advertising wanted manufacturers to believe, and ran very hot even for being all metal and such a small size.

_________________
Dennis

Experience is what you gain when the results aren't what you were expecting.


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Nov Mon 27, 2017 8:11 pm 
Member
User avatar

Joined: Nov Thu 11, 2010 6:03 pm
Posts: 652
Location: Pewaukee, WI
RCA had some late wood monochrome sets. The main example I can think of are those 12" wood 'mini-console' sets that are regularly incorrectly listed on ebay as "salesman's samples" Those had the block RCA font which makes them 1968 or later.

I believe Zenith was offering metal portables until about 1970, then went to plastic...Strangely enough their loss leader color table sets continued to be offered in metal until 1983 (System3 era). Doug Harland had one of the 1983 models on ebay a few months ago. I my self have a 1976 metal table top Zenith.


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Nov Mon 27, 2017 8:52 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1517
Location: Monroe, NC 28112 USA
Thanks,
I have until early March to finalize my presentation. Have set it aside and will revisit about the start of February.

Robert


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Nov Thu 30, 2017 4:37 am 
Member

Joined: Sep Fri 07, 2007 2:27 am
Posts: 4914
Location: Grand Chute, Wisconsin
Robert Lozier wrote:
Anybody have this Sams folder 704-4 with the Sears model 4146?

What I'm interested in seeing is the schematic of the tuner. I'd like to know if it had a separate RF amplifier tube or was it using a cheaper design? Wondering if this set would have been regarded as a decent TV for fringe areas.

There are 3 different VHF tuners in that folder. Schematics here: https://www.dropbox.com/sh/7zuzi2i6bqr1 ... AVT_a?dl=0

.


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Nov Thu 30, 2017 2:23 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1517
Location: Monroe, NC 28112 USA
Thanks for taking the time to scan an put on Dropbox. I've added them to my files

They are good resolution that I can crop and blow-up and still look good.

All the best,
Robert


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Nov Thu 30, 2017 3:02 pm 
Member

Joined: Sep Fri 07, 2007 2:27 am
Posts: 4914
Location: Grand Chute, Wisconsin
Robert Lozier wrote:
Thanks for taking the time to scan an put on Dropbox. I've added them to my files

They are good resolution that I can crop and blow-up and still look good.

All the best,
Robert
If you'd like higher resolution if you are using them for a presentation, I can rescan them for you.

.


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Nov Thu 30, 2017 3:25 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1517
Location: Monroe, NC 28112 USA
Wiscojim

Not necessary.... 300 dpi looks great on a HD screen.

Thanks again,

Robert


Top
 Profile  
 
 Post subject: Re: Sams folder 704-4 August 1964 ???
PostPosted: Nov Thu 30, 2017 10:16 pm 
Member

Joined: Apr Sat 06, 2013 2:18 pm
Posts: 308
Location: New Hampshire
Zenith IMHO was the hottest tube set especially the 23" consoles ( 14N22 chassis etc).
On rabbit ears they would get CH 8 130 miles away, no other could even on
the antenna. Used a 6HA5, dont remember mix/osc, & 3 6BZ6 IF amps.
A lot of it is in the IF's. We had a Ch7 30 miles away & a CH9 60 miles away in the
SAME direction. Hook the antenna on a lesser set & the adjacents would kill it.
BTW use the long model number on Sears & you may be able to tell the exact tuner.
Format is 528.#######

73 Zeno 8)
LFOD !


Top
 Profile  
 
Post New Topic Post Reply  [ 12 posts ]  Moderators: 7jp4-guy, Mr. Detrola

All times are UTC [ DST ]


Who is online

Users browsing this forum: Kevin Kuehn, radiorich and 7 guests



Search for:
Jump to:  


















Privacy Policy :: Powered by phpBB