Thought I would post this and get input from the experts. Is this a radar tube?


polaraman

http://cgi.ebay.com/COLLECTOR-Dumont-5SP7-CRT-Cathode-Ray-Tube-Dual-Guns_W0QQitemZ260005418027QQihZ016QQcategoryZ25414 QQrdZ1QQcmdZViewItem

Yes,the P7 phosphor is the giveaway,it's a cascade phosphor screen that provides image retention between sweeps. That tube has two electron guns,also.

This tube was used in a Dumont scope that has two separate channels. Common power supply. It was offered in both " portable " and rack mount versions. I don't remember much about them other than that.

$150...Whew ! Seems like he thinks VERY highly of this thing...Methinks he's a bit high on a lot of his stuff tho...