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Old September 18th 09, 08:09 PM posted to alt.binaries.pictures.radio
ian field[_2_] ian field[_2_] is offline
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First recorded activity by RadioBanter: Sep 2008
Posts: 11
Default Crosley 9-407 pics


"Brenda Ann" wrote in message
...
Pics of my Crosley set. Don't know why the photo looks more washed out
than the actual TV picture. Focus (of the set) is not perfect, but it is
plenty bright, and this is without a brightner and without rejuvenation.
Note: this CRT works MUCH better WITHOUT the ion trap, so I figure it must
be an upgrade version, or maybe even a 12LP4 instead of a 12KP4.

The other pic shows how far off the tuning dial is. The set is on channel
2. Note the indicator for channel 2 is at approximately the 9:30 position.

--
Illigitimus non-tatum carborundum.

Don't let the *******s wear you down!



Note that the ion trap is to protect the phosphor.

As I understand it, the electron beam is aimed slightly off centre and the
beam trajectory is corrected by an external magnetic field (the ion trap)
the ions being heavier than electrons are not deflected and collide with the
glass wall of the tube neck.

It would be interesting to know how you cantered the picture without the ion
trap.