TV developments 1960.
 

Looking through the 1960 August and September issues of the Wireless and Electrical trader magazine it seems there was a lots of exciting new developments going on.
One was the introduction of the 23" "square screen" CRT. The attachment shows the new KB "Kolsterama" TV set.

DFWB.

Re: TV developments 1960.
 

Another TV from late 1960. The Cossor CT2100. Checkout that stand.

DFWB.

Re: TV developments 1960.
 

Apart from not looking very steady on that stand it reminds me of someone crossing their legs in urgent need of the bathroom, ok, I have brought the tone of the thread down. :-)

Re: TV developments 1960.
 

Hi Frank,
I don't ever remember any Cossor TV being equipped with that dodgy looking stand.

DFWB.

Re: TV developments 1960.
 

I have never seen that stand before, probably the few they sold were returned with the damaged set that had fell over.
Around that time many table models were still being sold with a TV table, the table often had castors.
From the early 60's onwards legs and stands were much more common though.

Nice photo, made me smile.

Re: TV developments 1960.
 

My paternal grandparents had this exact model, but not on that odd looking stand, on a sideboard!

Of course, it is simply a "badge engineered" and slightly restyled Philips 21TG100U.

Re: TV developments 1960.
 

Note the reversion to 5:4 aspect ratio.

Re: TV developments 1960.
 

That was right around the time the US manufacturers came out with the 23" square cornered CRT's. A year later, they came out with a 19" square cornered CRT for the portables and smaller table models.

Re: TV developments 1960.
 

The 21" 110 degree CRTs types AW53-88 and the 21DKP4 certainly did have a very spherical 5 : 4 faceplate and the setting up instructions recommended that the picture width had to be overscanned by 10% or so.
In 1960 a short neck version of the 17" AW43-88 was introduced and was designated as AW43-89. This tube made it possible to allow manufactures to make really slim TV sets. An example is the Philco 1060.
The 23" CRT used by Pye, Ferguson and HMV was the Sylvania 23SP4. This tube employed a bonded on safety faceplate. The Kolsterama TV set employed the Brimar C23AG, a separate safety window was required for this tube.
From the Radiomuseum: http://www.radiomuseum.org/tubes/tube_aw53-88.html

DFWB.

Re: TV developments 1960.
 

In 1960 another important development for television was the introduction of the frame grid pentodes, EF183 and EF184.

DFWB.

Re: TV developments 1960.
 

Hi David,
Reading the USA magazines, from american radio history, show that many advances appear to have been produced at a similar time, I presume there was a lot of cross licensing of patents with USA and Europe.

Another frame grid valve was the PC97, that had a specially shaped anode and screens around the grid to reduce grid anode capacity to around 0.2pf, much less than the PCC84 type valve. The PC97 seemed to be introduced about the same time as similar valves in USA.

Those 23 inch Sylvianis CRT's used by Pye etc, did they have the Sylvania name or were they badged UK makers. I cannot remember.

Frank

Re: TV developments 1960.
 

Hi Frank,
I have a Pye V600A 23" TV at home and it has the 23SP4 fitted in it.
The CRT has simply a white label on it with the type number, 23SP4, no indication of the maker so I'm assuming it was Sylvania.
The CRT is in exceptionally good condition considering the age of the set, very bright and excellent focus, you really can see the line structure.
The set was made December 1960.

DFWB.

Re: TV developments 1960.
 

Another big sales feature for 1960 was the push-button channel selector.
The attachment is from the 6th of August Wireless and Electrical Trader and shows the new Regentone model 17/18. The tuner unit was the compact Cyldon PC80, this new unit turned out in service to one of the most unreliable tuners ever made.
After the acquisition of Regentone and RGD by STC in 1963 the new owners of Regentone would not in due course accept the PC80 for repair and issued the miniature Philips AT7650 turret tuner as a replacement.

DFWB.

Re: TV developments 1960.
 

Bonded faceplate from Sylvania.
http://www.americanradiohistory.com/...-News-1960.pdf

This used a glass bonded faceplate, presume the one in the Pye is the same type. Sylvania did produce a smaller 16 inch CRT with a plastic faceplate for portable TV's.

I seem to remember the bonded faceplate CRT's by Mullard and Mazda had a plastic faceplate even in the larger screen sizes. Then the Fenbridge guard (cap) came along as noted by John in the GEC 2013 thread.

Re: TV developments 1960.
 

Yes, Mullard A47-13W and Mazda CME1906 (and the 23" equivalent types). These "twin panel" CRTs were particularly favoured by K-B and used in their VC1, 2 and 3 chassis sets.

Re: TV developments 1960.
 

Those tuners were terrible. The push button used to push a switch link along a printed circuit board making connections with leaf contacts. The amount of travel was set by a click arrangement under the button covers.

The small pins that supported the slide bar broke off. They were made of 'monkey metal.'
There were no cures or spares available and the replacement rotary tuner kit supplied by the makers used to be fitted in place of the push button unit with adapter plates etc. The Sobell ST282 [1961/2] series suffered badly and were often written off early due to the tuner. Other than that it was a pity because the actual chassis was a reliable one. There were some rather way out tuners produced during the period that David mentions.


The Regentone 1018 had no room in the cabinet for a front or side mounted rotary tuner requiring the need for it to be mounted vertically at the top of the cabinet. A large hole had to be drilled in the TOP of the case to allow the tuner spindle to protrude so that the fine tuner and channel selector knobs could be fitted.

It looks very untidy but the customer was happy with it being rid of the push button tuner. John.

Re: TV developments 1960.
 

Quote HKS: The Regentone 1018 had no room in the cabinet for a front or side mounted rotary tuner requiring the need for it to be mounted vertically at the top of the cabinet. A large hole had to be drilled in the TOP of the case to allow the tuner spindle to protrude so that the fine tuner and channel selector knobs could be fitted.
It looks very untidy but the customer was happy with it being rid of the push button tuner. John.
Hi John, Can you imagine anything as awful as having a channel selector control on the cabinet top? The ideal replacement tuner unit would have been the compact Fireball type but this type of tuner was out of production by the time it came to replace the horrible thing fitted in the Regentone push button set.
So it had to be the Philips AT7650 tuner which was also fitted in the Featherlite portable TV.

DFWB.

Re: TV developments 1960.
 

The Philips AT7650 tuner, was this the one with printed circuit biscuits and the small fine tuner rod that broke off?

Re: TV developments 1960.
 

Was it Sobell that had the push-buttons in a circle, with a centre pointer turning towards the one selected?
You would see such gimmicks on American cars of the day.

Re: TV developments 1960.
 

Hi Frank,
that's the one, although didn't experience too much trouble with the tuner. The Philips AT7650 tuner was used by many TV manufactures. Philips of course, but also STC in the VC4 series, some GEC and Sobell sets. I think Rediffusion used it in some models and I'm sure there was one Thorn set equipped with the AT7650.

DFWB.