On 5/2/2013 12:06 PM, Charles MacDonald wrote:
On 13-05-02 11:35 AM, Instrument Resources of America wrote:The 6E5 was the original "eye" tube, more properly known as "electron ray indicator", tube...... The 6E5 came out by RCA in or aroundthe late 1930's perhaps the early 1940;s. ..... I wish I still had that oldset, that started my life long interest in electronics. Lots of very enjoyable hours spent listening to the shortwave and ham bands. Ira.June of 1935 is shown as the announcement date. "a NEW Electron Ray tube for indicator use"If you have the Tube Collectors association Data Cache DVD, the original data sheet is in file 0033.pdf There was a minor revison of the specs in 1947. Mostly allowing a T-9 (stright sideed bulb) rather than the ST 12 shape of the original.The data sheet does have some advice on using the tube in the AVC circuit of a radio as a tuning indicator, as well as a good explanation of how it works including a cutaway diagram of the tube.
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