[78-L] Grooved video discs 78rpm resp. 1500rpm (''mechanical TV'')

[neechevoneeznayou at gmail.com]

It appears the CD is not available at present.

joe salerno


On 10/11/2012 12:16 PM, Michael Biel wrote:
>  From Michael Shoshani
>> That would be http://www.tvdawn.com/ and yes, they are *tiny*.
>
> I would suggest buying the enhanced CD that the site sells.  Don McLean
> spoke at the London ARSC in 2001 and several times at the Early TV
> conference at the TV museum in Hilliard, Ohio.  They have several
> different types of mechanical TVs in operation there, and the pictures
> of those from the 20s can be a bit larger than a stamp, maybe the size
> of a 3x5 card held vertical.  The resolution of a live picture is a bit
> better than what is on the discs.  Remember, the air-checks were just on
> embossed bare aluminum, and consider what they sound like for audio.
>
> Interesting link to the Telefunken grooved disc.  I have a lot of the
> American RCA CED grooved discs and machines.  The machines are tough to
> keep adjusted.
>
> Mike Biel  mbiel at mbiel.com
>
> -------- Original Message --------
> From: "neechevoneeznayou at gmail.com" <neechevoneeznayou at gmail.com>
> I've seen the images online, some site about the history of television.
> At 30 lines, the images are hardly big enough to call a postage stamp on
>
> a modern computer screen.  joe salerno
>
> On 10/11/2012 5:27 AM, Benno Häupl wrote:
>> Scottish inventor John Logie Baird devolped a system using grooved discs
>> that could reproduce moving pictures of 30 lines. Has anybody here seen
>> (or own) a grooved video disc made according to this standard (around 1928)?
>>
>> BTW, currently there is on ebay.de a Telefunken/Decca video disc player
>> up for auction, with some 70 discs. The grooved records turn at a speed of
>> about 1500 revs/min. It dates from the early 1970s. It fascinated me even
>> when it was launched: you track grooves with a diamond needle and you get
>> a color picture and sound!
>>
>> Only about 3,000 copies were sold, plus a TOTAL of about 30,000 discs!
>>
>> http://www.ebay.de/itm/RARITAT-TED-Bildplattenspieler-Telefunken-TP-1005-1975-VINTAGE-/290784965248
>>
>> So, does anybody on this list own a grooved Baird disc that runs at 78rpm?
>>
>> Benno
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-- 
Joe Salerno