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Modern Crater Lamps for sale

PostPosted: Sat Oct 29, 2011 10:19 pm
by Marcus
Hello all,

I have a box of modern 'crater lamps' these were used in faxes before hollow-state went the way of the ghost.

They fire up at around 300v from memory use series resistor to limit current, I will test each one before I send it anyway.

i always intended to use these for mirror drum displays or similar.

I have more than I could ever use so $10 each for NBTVA members.

They have octal bases.

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PostPosted: Sat Sep 15, 2012 8:02 am
by Steve_McVoy
Hi Mark,

I got your shipment of crater lamps a while ago, and finally got around to try them. It turns out they are identical to a RCA 901 I have, which has an aperture of about .02 inch.

My lens disk is 9 inches in diameter, with 45 lenses. That means the spacing between lenses (and width of the picture) is about .6 inches. It you divide .6 by .02, you get 30. To resolve 45 lines, I need a smaller aperture.

If I put the lamp in the proper place behind the lens, I get a spot about 1/4 inch diameter on the 6 inch square viewing screen.

So, unfortunately this approach won't work. Thanks very much for sending me the tubes, though.

Re: Modern Crater Lamps for sale

PostPosted: Mon Mar 14, 2016 2:50 am
by McGee2021
This may be an older post, but would you have any more left?

Re: Modern Crater Lamps for sale

PostPosted: Mon May 16, 2016 10:31 pm
by Marcus
Yes I do free for members of the site just cover postage.

Re: Modern Crater Lamps for sale

PostPosted: Tue May 17, 2016 12:21 pm
by McGee2021
What would the postage be to Nashville, Indiana, U.S.? Sorry if I sound rude or demanding. :mrgreen:

Re: Modern Crater Lamps for sale

PostPosted: Tue May 17, 2016 10:31 pm
by Marcus
Hello,

It is $23.95 based on the postage calculator to send a small package.

Cheers,
Mark

Re: Modern Crater Lamps for sale

PostPosted: Tue May 17, 2016 10:32 pm
by Marcus
That's Australian dollars.

Re: Modern Crater Lamps for sale

PostPosted: Tue May 17, 2016 10:35 pm
by Marcus
Also Steve if you want them for the club happy to donate what I have left of you think they are of use to anyone. I have about 15.

Cheers,
Mark

Re: Modern Crater Lamps for sale

PostPosted: Tue Nov 01, 2016 9:48 am
by kovalick
Hi
I am interested in purchasing 1 of 2 of your Crater Lamps if you have any remaining. I live near San Francisco. We can continue this conversation over email if okay with you. Thanks Al